[{"data":1,"prerenderedAt":6522},["ShallowReactive",2],{"article-fr-\u002Fbackend\u002Fnest-js\u002Funlocking-the-power-of-relationships-with-typeorm":3,"article-sibling-fr-\u002Fbackend\u002Fnest-js\u002Funlocking-the-power-of-relationships-with-typeorm":3445,"surround-fr-\u002Fbackend\u002Fnest-js\u002Funlocking-the-power-of-relationships-with-typeorm":6495,"related-fr-\u002Fbackend\u002Fnest-js\u002Funlocking-the-power-of-relationships-with-typeorm":6502},{"id":4,"title":5,"body":6,"date":3428,"description":3429,"extension":3430,"img":3431,"meta":3432,"navigation":265,"path":3433,"seo":3434,"slug":3435,"stem":3436,"tags":3437,"topics":3441,"__hash__":3444},"content\u002F2.backend\u002F1.nest-js\u002F4.unlocking-the-power-of-relationships-with-typeorm.fr.md","Maîtriser NestJS : libérer la puissance des relations avec TypeORM et les bases SQL",{"type":7,"value":8,"toc":3412},"minimark",[9,14,18,21,36,40,43,46,84,87,91,101,104,145,148,153,160,503,512,518,773,779,794,799,802,805,1121,1126,1136,1140,1805,1809,1818,1821,1837,1950,2246,2283,2287,2290,2846,2850,2859,2864,2994,3010,3014,3017,3272,3276,3279,3401,3405,3408],[10,11,13],"h2",{"id":12},"introduction","Introduction",[15,16,17],"p",{},"Bienvenue dans « Maîtriser NestJS : libérer la puissance des relations avec TypeORM et les\nbases SQL ». Dans cet article, on regarde comment NestJS, conjointement avec TypeORM et les\nbases SQL, peut t'aider à construire des structures de données complexes et à gérer leurs\ninteractions. À la fin de ce tutoriel, tu seras capable de concevoir des APIs qui gèrent des\nconnexions de données complexes avec aisance, et tu feras passer ta maîtrise de NestJS au\nniveau supérieur.",[15,19,20],{},"Que tu sois un développeur NestJS expérimenté qui veut élargir ses connaissances ou un\ndébutant impatient de maîtriser les subtilités des relations de données, cette exploration\ncomplète te donnera l'expérience nécessaire pour construire des applications à la pointe.\nAlors, c'est parti — apprenons à concevoir des systèmes solides et interconnectés avec NestJS,\nTypeORM et les bases SQL.",[22,23,24],"blockquote",{},[15,25,26,27,35],{},"J'ai créé un dépôt GitHub pour cette série, accessible à l'\n",[28,29,34],"a",{"href":30,"rel":31,"title":33},"https:\u002F\u002Fgithub.com\u002Fdenisakp\u002Fawesome-nest-js",[32],"nofollow","Projet awesome nest-js","adresse suivante",".",[10,37,39],{"id":38},"cest-quoi-les-relations","C'est quoi les relations",[15,41,42],{},"Les relations sont des connexions formées entre deux tables ou plus. Elles s'établissent via\ndes champs communs aux tables, qui incluent souvent des clés primaires et étrangères.",[15,44,45],{},"Il existe trois types de relations :",[47,48,49,61,74],"ol",{},[50,51,52,56,57,35],"li",{},[53,54,55],"strong",{},"One-to-one"," : chaque ligne de la table primaire a exactement une ligne dans la table\nétrangère. Pour définir ce type de relation, on utilise le décorateur ",[58,59,60],"code",{},"@OneToOne()",[50,62,63,66,67,70,71,35],{},[53,64,65],{},"One-to-many \u002F Many-to-one"," : chaque ligne de la table primaire est connectée à une ou\nplusieurs lignes de la table étrangère. Pour définir ce type de relation, on utilise les\ndécorateurs ",[58,68,69],{},"@OneToMany()"," et ",[58,72,73],{},"@ManyToOne()",[50,75,76,79,80,83],{},[53,77,78],{},"Many-to-many"," : chaque ligne de la table primaire a plusieurs lignes liées dans la table\nétrangère, et chaque enregistrement de la table étrangère a plusieurs lignes liées dans la\ntable primaire. On utilise ",[58,81,82],{},"@ManyToMany()"," pour définir ce type de relation.",[15,85,86],{},"On va passer en revue chacun de ces termes en détail.",[10,88,90],{"id":89},"one-to-one","One-To-One",[15,92,93,94,70,97,100],{},"One-to-one est une relation où A contient une seule instance de B, et B contient une seule\ninstance de A. Prenons par exemple les entités ",[53,95,96],{},"User",[53,98,99],{},"Profile",". Un utilisateur ne peut\navoir qu'un seul profil, et un profil n'appartient qu'à un seul utilisateur.",[15,102,103],{},"Puisqu'on va implémenter l'authentification et l'autorisation dans le prochain article, on\ncommence par créer les ressources liées. Créons donc les ressources REST API profiles et users.",[105,106,112],"pre",{"className":107,"code":108,"filename":109,"language":110,"meta":111,"style":111},"language-shell shiki shiki-themes material-theme-lighter material-theme material-theme-palenight"," nest g resource profiles\n nest g resource users\n","bash","shell","",[58,113,114,133],{"__ignoreMap":111},[115,116,119,123,127,130],"span",{"class":117,"line":118},"line",1,[115,120,122],{"class":121},"sBMFI"," nest",[115,124,126],{"class":125},"sfazB"," g",[115,128,129],{"class":125}," resource",[115,131,132],{"class":125}," profiles\n",[115,134,136,138,140,142],{"class":117,"line":135},2,[115,137,122],{"class":121},[115,139,126],{"class":125},[115,141,129],{"class":125},[115,143,144],{"class":125}," users\n",[15,146,147],{},"Voici la sortie pour la création de la ressource profiles :",[149,150],"post-image",{"alt":151,"source":152},"Création d'une ressource Nest","https:\u002F\u002Fres.cloudinary.com\u002Fdpdwhd6ka\u002Fimage\u002Fupload\u002Ff_auto,q_auto\u002Fv1\u002FBlog\u002Farticles\u002Fnest-js\u002F4.unlocking-the-power-of-relationships-with-typeorm\u002Fhj3fhthehvn3vnltgewb",[15,154,155,156,159],{},"Explorons ",[58,157,158],{},"user.entity.ts"," :",[105,161,165],{"className":162,"code":163,"filename":158,"language":164,"meta":111,"style":111},"language-ts shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { UserRole } from 'src\u002Fenums\u002Fuser.role';\nimport { Profile } from 'src\u002Fprofiles\u002Fentities\u002Fprofile.entity';\nimport { Column, Entity, OneToOne, PrimaryGeneratedColumn } from 'typeorm';\n\n@Entity('users')\nexport class User {\n @PrimaryGeneratedColumn()\n id: number;\n\n @Column()\n name: string;\n\n @Column({ unique: true })\n email: string;\n\n @Column()\n password: string;\n\n @Column({ type: 'enum', enum: UserRole, default: UserRole.CUSTOMER })\n role: string;\n}\n\n","ts",[58,166,167,199,221,260,267,290,306,318,333,338,348,361,366,391,403,408,417,429,434,485,497],{"__ignoreMap":111},[115,168,169,173,177,181,184,187,190,193,196],{"class":117,"line":118},[115,170,172],{"class":171},"s7zQu","import",[115,174,176],{"class":175},"sMK4o"," {",[115,178,180],{"class":179},"sTEyZ"," UserRole",[115,182,183],{"class":175}," }",[115,185,186],{"class":171}," from",[115,188,189],{"class":175}," '",[115,191,192],{"class":125},"src\u002Fenums\u002Fuser.role",[115,194,195],{"class":175},"'",[115,197,198],{"class":175},";\n",[115,200,201,203,205,208,210,212,214,217,219],{"class":117,"line":135},[115,202,172],{"class":171},[115,204,176],{"class":175},[115,206,207],{"class":179}," Profile",[115,209,183],{"class":175},[115,211,186],{"class":171},[115,213,189],{"class":175},[115,215,216],{"class":125},"src\u002Fprofiles\u002Fentities\u002Fprofile.entity",[115,218,195],{"class":175},[115,220,198],{"class":175},[115,222,224,226,228,231,234,237,239,242,244,247,249,251,253,256,258],{"class":117,"line":223},3,[115,225,172],{"class":171},[115,227,176],{"class":175},[115,229,230],{"class":179}," Column",[115,232,233],{"class":175},",",[115,235,236],{"class":179}," Entity",[115,238,233],{"class":175},[115,240,241],{"class":179}," OneToOne",[115,243,233],{"class":175},[115,245,246],{"class":179}," PrimaryGeneratedColumn",[115,248,183],{"class":175},[115,250,186],{"class":171},[115,252,189],{"class":175},[115,254,255],{"class":125},"typeorm",[115,257,195],{"class":175},[115,259,198],{"class":175},[115,261,263],{"class":117,"line":262},4,[115,264,266],{"emptyLinePlaceholder":265},true,"\n",[115,268,270,273,277,280,282,285,287],{"class":117,"line":269},5,[115,271,272],{"class":175},"@",[115,274,276],{"class":275},"s2Zo4","Entity",[115,278,279],{"class":179},"(",[115,281,195],{"class":175},[115,283,284],{"class":125},"users",[115,286,195],{"class":175},[115,288,289],{"class":179},")\n",[115,291,293,296,300,303],{"class":117,"line":292},6,[115,294,295],{"class":171},"export",[115,297,299],{"class":298},"spNyl"," class",[115,301,302],{"class":121}," User",[115,304,305],{"class":175}," {\n",[115,307,309,312,315],{"class":117,"line":308},7,[115,310,311],{"class":175}," @",[115,313,314],{"class":275},"PrimaryGeneratedColumn",[115,316,317],{"class":179},"()\n",[115,319,321,325,328,331],{"class":117,"line":320},8,[115,322,324],{"class":323},"swJcz"," id",[115,326,327],{"class":175},":",[115,329,330],{"class":121}," number",[115,332,198],{"class":175},[115,334,336],{"class":117,"line":335},9,[115,337,266],{"emptyLinePlaceholder":265},[115,339,341,343,346],{"class":117,"line":340},10,[115,342,311],{"class":175},[115,344,345],{"class":275},"Column",[115,347,317],{"class":179},[115,349,351,354,356,359],{"class":117,"line":350},11,[115,352,353],{"class":323}," name",[115,355,327],{"class":175},[115,357,358],{"class":121}," string",[115,360,198],{"class":175},[115,362,364],{"class":117,"line":363},12,[115,365,266],{"emptyLinePlaceholder":265},[115,367,369,371,373,375,378,381,383,387,389],{"class":117,"line":368},13,[115,370,311],{"class":175},[115,372,345],{"class":275},[115,374,279],{"class":179},[115,376,377],{"class":175},"{",[115,379,380],{"class":323}," unique",[115,382,327],{"class":175},[115,384,386],{"class":385},"sfNiH"," true",[115,388,183],{"class":175},[115,390,289],{"class":179},[115,392,394,397,399,401],{"class":117,"line":393},14,[115,395,396],{"class":323}," email",[115,398,327],{"class":175},[115,400,358],{"class":121},[115,402,198],{"class":175},[115,404,406],{"class":117,"line":405},15,[115,407,266],{"emptyLinePlaceholder":265},[115,409,411,413,415],{"class":117,"line":410},16,[115,412,311],{"class":175},[115,414,345],{"class":275},[115,416,317],{"class":179},[115,418,420,423,425,427],{"class":117,"line":419},17,[115,421,422],{"class":323}," password",[115,424,327],{"class":175},[115,426,358],{"class":121},[115,428,198],{"class":175},[115,430,432],{"class":117,"line":431},18,[115,433,266],{"emptyLinePlaceholder":265},[115,435,437,439,441,443,445,448,450,452,455,457,459,462,464,466,468,471,473,475,477,480,483],{"class":117,"line":436},19,[115,438,311],{"class":175},[115,440,345],{"class":275},[115,442,279],{"class":179},[115,444,377],{"class":175},[115,446,447],{"class":323}," type",[115,449,327],{"class":175},[115,451,189],{"class":175},[115,453,454],{"class":125},"enum",[115,456,195],{"class":175},[115,458,233],{"class":175},[115,460,461],{"class":323}," enum",[115,463,327],{"class":175},[115,465,180],{"class":179},[115,467,233],{"class":175},[115,469,470],{"class":323}," default",[115,472,327],{"class":175},[115,474,180],{"class":179},[115,476,35],{"class":175},[115,478,479],{"class":179},"CUSTOMER ",[115,481,482],{"class":175},"}",[115,484,289],{"class":179},[115,486,488,491,493,495],{"class":117,"line":487},20,[115,489,490],{"class":323}," role",[115,492,327],{"class":175},[115,494,358],{"class":121},[115,496,198],{"class":175},[115,498,500],{"class":117,"line":499},21,[115,501,502],{"class":175},"}\n",[22,504,505],{},[15,506,507,508,511],{},"L'enum ",[58,509,510],{},"UserRole"," est disponible dans le code source. Tu devrais y jeter un œil si tu veux\nvoir comment il est implémenté.",[15,513,514,515,159],{},"Maintenant explorons le contenu de ",[58,516,517],{},"profile.entity.ts",[105,519,521],{"className":162,"code":520,"filename":517,"language":164,"meta":111,"style":111},"import { User } from 'src\u002Fusers\u002Fentities\u002Fuser.entity';\nimport { Column, Entity, JoinColumn, OneToOne, PrimaryGeneratedColumn } from 'typeorm';\n\n@Entity('profiles')\nexport class Profile {\n @PrimaryGeneratedColumn()\n id: number;\n\n @Column({ nullable: true })\n full_address?: string;\n\n @Column({ nullable: true })\n photo?: string;\n\n @OneToOne(() => User, (user) => user.profile) \u002F\u002F specify inverse side as a second parameter\n @JoinColumn()\n user: User;\n}\n\n",[58,522,523,544,581,585,602,612,620,630,634,655,667,671,691,702,706,749,758,769],{"__ignoreMap":111},[115,524,525,527,529,531,533,535,537,540,542],{"class":117,"line":118},[115,526,172],{"class":171},[115,528,176],{"class":175},[115,530,302],{"class":179},[115,532,183],{"class":175},[115,534,186],{"class":171},[115,536,189],{"class":175},[115,538,539],{"class":125},"src\u002Fusers\u002Fentities\u002Fuser.entity",[115,541,195],{"class":175},[115,543,198],{"class":175},[115,545,546,548,550,552,554,556,558,561,563,565,567,569,571,573,575,577,579],{"class":117,"line":135},[115,547,172],{"class":171},[115,549,176],{"class":175},[115,551,230],{"class":179},[115,553,233],{"class":175},[115,555,236],{"class":179},[115,557,233],{"class":175},[115,559,560],{"class":179}," JoinColumn",[115,562,233],{"class":175},[115,564,241],{"class":179},[115,566,233],{"class":175},[115,568,246],{"class":179},[115,570,183],{"class":175},[115,572,186],{"class":171},[115,574,189],{"class":175},[115,576,255],{"class":125},[115,578,195],{"class":175},[115,580,198],{"class":175},[115,582,583],{"class":117,"line":223},[115,584,266],{"emptyLinePlaceholder":265},[115,586,587,589,591,593,595,598,600],{"class":117,"line":262},[115,588,272],{"class":175},[115,590,276],{"class":275},[115,592,279],{"class":179},[115,594,195],{"class":175},[115,596,597],{"class":125},"profiles",[115,599,195],{"class":175},[115,601,289],{"class":179},[115,603,604,606,608,610],{"class":117,"line":269},[115,605,295],{"class":171},[115,607,299],{"class":298},[115,609,207],{"class":121},[115,611,305],{"class":175},[115,613,614,616,618],{"class":117,"line":292},[115,615,311],{"class":175},[115,617,314],{"class":275},[115,619,317],{"class":179},[115,621,622,624,626,628],{"class":117,"line":308},[115,623,324],{"class":323},[115,625,327],{"class":175},[115,627,330],{"class":121},[115,629,198],{"class":175},[115,631,632],{"class":117,"line":320},[115,633,266],{"emptyLinePlaceholder":265},[115,635,636,638,640,642,644,647,649,651,653],{"class":117,"line":335},[115,637,311],{"class":175},[115,639,345],{"class":275},[115,641,279],{"class":179},[115,643,377],{"class":175},[115,645,646],{"class":323}," nullable",[115,648,327],{"class":175},[115,650,386],{"class":385},[115,652,183],{"class":175},[115,654,289],{"class":179},[115,656,657,660,663,665],{"class":117,"line":340},[115,658,659],{"class":323}," full_address",[115,661,662],{"class":175},"?:",[115,664,358],{"class":121},[115,666,198],{"class":175},[115,668,669],{"class":117,"line":350},[115,670,266],{"emptyLinePlaceholder":265},[115,672,673,675,677,679,681,683,685,687,689],{"class":117,"line":363},[115,674,311],{"class":175},[115,676,345],{"class":275},[115,678,279],{"class":179},[115,680,377],{"class":175},[115,682,646],{"class":323},[115,684,327],{"class":175},[115,686,386],{"class":385},[115,688,183],{"class":175},[115,690,289],{"class":179},[115,692,693,696,698,700],{"class":117,"line":368},[115,694,695],{"class":323}," photo",[115,697,662],{"class":175},[115,699,358],{"class":121},[115,701,198],{"class":175},[115,703,704],{"class":117,"line":393},[115,705,266],{"emptyLinePlaceholder":265},[115,707,708,710,713,715,718,721,723,725,728,732,735,737,740,742,745],{"class":117,"line":405},[115,709,311],{"class":175},[115,711,712],{"class":275},"OneToOne",[115,714,279],{"class":179},[115,716,717],{"class":175},"()",[115,719,720],{"class":298}," =>",[115,722,302],{"class":179},[115,724,233],{"class":175},[115,726,727],{"class":175}," (",[115,729,731],{"class":730},"sHdIc","user",[115,733,734],{"class":175},")",[115,736,720],{"class":298},[115,738,739],{"class":179}," user",[115,741,35],{"class":175},[115,743,744],{"class":179},"profile) ",[115,746,748],{"class":747},"sHwdD","\u002F\u002F specify inverse side as a second parameter\n",[115,750,751,753,756],{"class":117,"line":410},[115,752,311],{"class":175},[115,754,755],{"class":275},"JoinColumn",[115,757,317],{"class":179},[115,759,760,763,765,767],{"class":117,"line":419},[115,761,762],{"class":323}," user",[115,764,327],{"class":175},[115,766,302],{"class":121},[115,768,198],{"class":175},[115,770,771],{"class":117,"line":431},[115,772,502],{"class":175},[15,774,775,776,778],{},"Ci-dessus, on a utilisé le décorateur ",[58,777,60],{},". Son argument est une fonction qui renvoie\nla classe de l'entité avec laquelle on souhaite établir une relation.",[15,780,781,782,785,786,789,790,793],{},"Le décorateur ",[58,783,784],{},"@JoinColumn()"," spécifie que la relation est détenue par l'entité Profile. Il\nsignifie que les lignes de la table Profile contiennent la colonne ",[58,787,788],{},"userId",", qui peut stocker\nl'",[58,791,792],{},"id"," d'un utilisateur. On ne l'utilise que d'un côté de la relation.",[795,796,798],"h3",{"id":797},"relation-bidirectionnelle","Relation bidirectionnelle",[15,800,801],{},"Notre relation est actuellement unidirectionnelle. Ça signifie qu'un seul côté de la relation\nconnaît l'autre. Avec TypeORM, les relations peuvent être uni- ou bidirectionnelles. Les\nunidirectionnelles n'ont un décorateur de relation que d'un seul côté. Les bidirectionnelles\nen ont des deux côtés.",[15,803,804],{},"On vient de créer une relation unidirectionnelle. Rendons-la bidirectionnelle :",[105,806,808],{"className":162,"code":807,"filename":517,"language":164,"meta":111,"style":111},"import { UserRole } from 'src\u002Fenums\u002Fuser.role';\nimport { Profile } from 'src\u002Fprofiles\u002Fentities\u002Fprofile.entity';\nimport { Column, Entity, OneToOne, PrimaryGeneratedColumn } from 'typeorm';\n\n@Entity('users')\nexport class User {\n @PrimaryGeneratedColumn()\n id: number;\n\n @Column()\n name: string;\n\n @Column({ unique: true })\n email: string;\n\n @Column()\n password: string;\n\n @Column({ type: 'enum', enum: UserRole, default: UserRole.CUSTOMER })\n role: string;\n\n @OneToOne(() => Profile, (profile) => profile.user)\n profile: Profile;\n}\n",[58,809,810,830,850,882,886,902,912,920,930,934,942,952,956,976,986,990,998,1008,1012,1056,1066,1070,1104,1116],{"__ignoreMap":111},[115,811,812,814,816,818,820,822,824,826,828],{"class":117,"line":118},[115,813,172],{"class":171},[115,815,176],{"class":175},[115,817,180],{"class":179},[115,819,183],{"class":175},[115,821,186],{"class":171},[115,823,189],{"class":175},[115,825,192],{"class":125},[115,827,195],{"class":175},[115,829,198],{"class":175},[115,831,832,834,836,838,840,842,844,846,848],{"class":117,"line":135},[115,833,172],{"class":171},[115,835,176],{"class":175},[115,837,207],{"class":179},[115,839,183],{"class":175},[115,841,186],{"class":171},[115,843,189],{"class":175},[115,845,216],{"class":125},[115,847,195],{"class":175},[115,849,198],{"class":175},[115,851,852,854,856,858,860,862,864,866,868,870,872,874,876,878,880],{"class":117,"line":223},[115,853,172],{"class":171},[115,855,176],{"class":175},[115,857,230],{"class":179},[115,859,233],{"class":175},[115,861,236],{"class":179},[115,863,233],{"class":175},[115,865,241],{"class":179},[115,867,233],{"class":175},[115,869,246],{"class":179},[115,871,183],{"class":175},[115,873,186],{"class":171},[115,875,189],{"class":175},[115,877,255],{"class":125},[115,879,195],{"class":175},[115,881,198],{"class":175},[115,883,884],{"class":117,"line":262},[115,885,266],{"emptyLinePlaceholder":265},[115,887,888,890,892,894,896,898,900],{"class":117,"line":269},[115,889,272],{"class":175},[115,891,276],{"class":275},[115,893,279],{"class":179},[115,895,195],{"class":175},[115,897,284],{"class":125},[115,899,195],{"class":175},[115,901,289],{"class":179},[115,903,904,906,908,910],{"class":117,"line":292},[115,905,295],{"class":171},[115,907,299],{"class":298},[115,909,302],{"class":121},[115,911,305],{"class":175},[115,913,914,916,918],{"class":117,"line":308},[115,915,311],{"class":175},[115,917,314],{"class":275},[115,919,317],{"class":179},[115,921,922,924,926,928],{"class":117,"line":320},[115,923,324],{"class":323},[115,925,327],{"class":175},[115,927,330],{"class":121},[115,929,198],{"class":175},[115,931,932],{"class":117,"line":335},[115,933,266],{"emptyLinePlaceholder":265},[115,935,936,938,940],{"class":117,"line":340},[115,937,311],{"class":175},[115,939,345],{"class":275},[115,941,317],{"class":179},[115,943,944,946,948,950],{"class":117,"line":350},[115,945,353],{"class":323},[115,947,327],{"class":175},[115,949,358],{"class":121},[115,951,198],{"class":175},[115,953,954],{"class":117,"line":363},[115,955,266],{"emptyLinePlaceholder":265},[115,957,958,960,962,964,966,968,970,972,974],{"class":117,"line":368},[115,959,311],{"class":175},[115,961,345],{"class":275},[115,963,279],{"class":179},[115,965,377],{"class":175},[115,967,380],{"class":323},[115,969,327],{"class":175},[115,971,386],{"class":385},[115,973,183],{"class":175},[115,975,289],{"class":179},[115,977,978,980,982,984],{"class":117,"line":393},[115,979,396],{"class":323},[115,981,327],{"class":175},[115,983,358],{"class":121},[115,985,198],{"class":175},[115,987,988],{"class":117,"line":405},[115,989,266],{"emptyLinePlaceholder":265},[115,991,992,994,996],{"class":117,"line":410},[115,993,311],{"class":175},[115,995,345],{"class":275},[115,997,317],{"class":179},[115,999,1000,1002,1004,1006],{"class":117,"line":419},[115,1001,422],{"class":323},[115,1003,327],{"class":175},[115,1005,358],{"class":121},[115,1007,198],{"class":175},[115,1009,1010],{"class":117,"line":431},[115,1011,266],{"emptyLinePlaceholder":265},[115,1013,1014,1016,1018,1020,1022,1024,1026,1028,1030,1032,1034,1036,1038,1040,1042,1044,1046,1048,1050,1052,1054],{"class":117,"line":436},[115,1015,311],{"class":175},[115,1017,345],{"class":275},[115,1019,279],{"class":179},[115,1021,377],{"class":175},[115,1023,447],{"class":323},[115,1025,327],{"class":175},[115,1027,189],{"class":175},[115,1029,454],{"class":125},[115,1031,195],{"class":175},[115,1033,233],{"class":175},[115,1035,461],{"class":323},[115,1037,327],{"class":175},[115,1039,180],{"class":179},[115,1041,233],{"class":175},[115,1043,470],{"class":323},[115,1045,327],{"class":175},[115,1047,180],{"class":179},[115,1049,35],{"class":175},[115,1051,479],{"class":179},[115,1053,482],{"class":175},[115,1055,289],{"class":179},[115,1057,1058,1060,1062,1064],{"class":117,"line":487},[115,1059,490],{"class":323},[115,1061,327],{"class":175},[115,1063,358],{"class":121},[115,1065,198],{"class":175},[115,1067,1068],{"class":117,"line":499},[115,1069,266],{"emptyLinePlaceholder":265},[115,1071,1073,1075,1077,1079,1081,1083,1085,1087,1089,1092,1094,1096,1099,1101],{"class":117,"line":1072},22,[115,1074,311],{"class":175},[115,1076,712],{"class":275},[115,1078,279],{"class":179},[115,1080,717],{"class":175},[115,1082,720],{"class":298},[115,1084,207],{"class":179},[115,1086,233],{"class":175},[115,1088,727],{"class":175},[115,1090,1091],{"class":730},"profile",[115,1093,734],{"class":175},[115,1095,720],{"class":298},[115,1097,1098],{"class":179}," profile",[115,1100,35],{"class":175},[115,1102,1103],{"class":179},"user)\n",[115,1105,1107,1110,1112,1114],{"class":117,"line":1106},23,[115,1108,1109],{"class":323}," profile",[115,1111,327],{"class":175},[115,1113,207],{"class":121},[115,1115,198],{"class":175},[115,1117,1119],{"class":117,"line":1118},24,[115,1120,502],{"class":175},[22,1122,1123],{},[15,1124,1125],{},"À noter : la relation inverse est une idée plutôt abstraite qui n'ajoute pas de nouvelles\ncolonnes à la base.",[15,1127,1128,1129,1132,1133,1135],{},"On vient de rendre nos relations bidirectionnelles. Attention, la relation inverse n'a pas de\n",[58,1130,1131],{},"@JoinColumn",". ",[58,1134,1131],{}," ne doit être que d'un seul côté de la relation — sur la table qui\ncontient la clé étrangère.",[795,1137,1139],{"id":1138},"sauvegarder-et-récupérer-une-relation-one-to-one","Sauvegarder et récupérer une relation one-to-one",[105,1141,1144],{"className":162,"code":1142,"filename":1143,"language":164,"meta":111,"style":111},"import { HttpException, HttpStatus, Injectable } from '@nestjs\u002Fcommon';\nimport { CreateUserDto } from '.\u002Fdto\u002Fcreate-user.dto';\nimport { UpdateUserDto } from '.\u002Fdto\u002Fupdate-user.dto';\nimport { InjectRepository } from '@nestjs\u002Ftypeorm';\nimport { Repository } from 'typeorm';\nimport { User } from '.\u002Fentities\u002Fuser.entity';\nimport { Profile } from 'src\u002Fprofiles\u002Fentities\u002Fprofile.entity';\nimport { UpdateProfileDto } from 'src\u002Fprofiles\u002Fdto\u002Fupdate-profile.dto';\n\n@Injectable()\nexport class UsersService {\n constructor(\n @InjectRepository(User) private userRepository: Repository\u003CUser>,\n @InjectRepository(Profile) private profileRepository: Repository\u003CProfile>,\n ) {\n }\n\n async create(createUSerDto: CreateUserDto) {\n const user = await this.userRepository.save(createUSerDto); \u002F\u002F saving the user\n\n \u002F\u002F creating the the profile object\n const profile = new Profile();\n profile.full_address = createUSerDto.full_address;\n profile.photo = createUSerDto.photo;\n profile.user = user;\n\n await this.profileRepository.save(profile); \u002F\u002F linking the profile to user\n\n return this.findOne(user.id); \u002F\u002F return the user with the profile\n }\n\n async findOne(id: number) {\n const user = await this.userRepository.findOne({\n where: { id },\n relations: { profile: true }, \u002F\u002F by doing this, we're implementing the eager loading to automatically load the profile object\n });\n\n if (!user) throw new HttpException('user not found', HttpStatus.NOT_FOUND);\n\n return user;\n }\n}\n\n","user.service.ts",[58,1145,1146,1178,1200,1222,1244,1265,1286,1306,1328,1332,1341,1352,1360,1389,1413,1420,1425,1429,1450,1486,1490,1495,1512,1533,1552,1567,1572,1598,1603,1629,1634,1639,1659,1683,1699,1721,1731,1736,1781,1786,1795,1800],{"__ignoreMap":111},[115,1147,1148,1150,1152,1155,1157,1160,1162,1165,1167,1169,1171,1174,1176],{"class":117,"line":118},[115,1149,172],{"class":171},[115,1151,176],{"class":175},[115,1153,1154],{"class":179}," HttpException",[115,1156,233],{"class":175},[115,1158,1159],{"class":179}," HttpStatus",[115,1161,233],{"class":175},[115,1163,1164],{"class":179}," Injectable",[115,1166,183],{"class":175},[115,1168,186],{"class":171},[115,1170,189],{"class":175},[115,1172,1173],{"class":125},"@nestjs\u002Fcommon",[115,1175,195],{"class":175},[115,1177,198],{"class":175},[115,1179,1180,1182,1184,1187,1189,1191,1193,1196,1198],{"class":117,"line":135},[115,1181,172],{"class":171},[115,1183,176],{"class":175},[115,1185,1186],{"class":179}," 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createUSerDto",[115,1528,35],{"class":175},[115,1530,1521],{"class":179},[115,1532,198],{"class":175},[115,1534,1535,1537,1539,1542,1544,1546,1548,1550],{"class":117,"line":1118},[115,1536,1516],{"class":179},[115,1538,35],{"class":175},[115,1540,1541],{"class":179},"photo",[115,1543,1459],{"class":175},[115,1545,1526],{"class":179},[115,1547,35],{"class":175},[115,1549,1541],{"class":179},[115,1551,198],{"class":175},[115,1553,1555,1557,1559,1561,1563,1565],{"class":117,"line":1554},25,[115,1556,1516],{"class":179},[115,1558,35],{"class":175},[115,1560,731],{"class":179},[115,1562,1459],{"class":175},[115,1564,739],{"class":179},[115,1566,198],{"class":175},[115,1568,1570],{"class":117,"line":1569},26,[115,1571,266],{"emptyLinePlaceholder":265},[115,1573,1575,1578,1580,1583,1585,1587,1589,1591,1593,1595],{"class":117,"line":1574},27,[115,1576,1577],{"class":171}," await",[115,1579,1465],{"class":175},[115,1581,1582],{"class":179},"profileRepository",[115,1584,35],{"class":175},[115,1586,1473],{"class":275},[115,1588,279],{"class":323},[115,1590,1091],{"class":179},[115,1592,734],{"class":323},[115,1594,1482],{"class":175},[115,1596,1597],{"class":747}," \u002F\u002F linking the profile to user\n",[115,1599,1601],{"class":117,"line":1600},28,[115,1602,266],{"emptyLinePlaceholder":265},[115,1604,1606,1609,1611,1614,1616,1618,1620,1622,1624,1626],{"class":117,"line":1605},29,[115,1607,1608],{"class":171}," return",[115,1610,1465],{"class":175},[115,1612,1613],{"class":275},"findOne",[115,1615,279],{"class":323},[115,1617,731],{"class":179},[115,1619,35],{"class":175},[115,1621,792],{"class":179},[115,1623,734],{"class":323},[115,1625,1482],{"class":175},[115,1627,1628],{"class":747}," \u002F\u002F return the user with the profile\n",[115,1630,1632],{"class":117,"line":1631},30,[115,1633,1424],{"class":175},[115,1635,1637],{"class":117,"line":1636},31,[115,1638,266],{"emptyLinePlaceholder":265},[115,1640,1642,1644,1647,1649,1651,1653,1655,1657],{"class":117,"line":1641},32,[115,1643,1433],{"class":298},[115,1645,1646],{"class":323}," findOne",[115,1648,279],{"class":175},[115,1650,792],{"class":730},[115,1652,327],{"class":175},[115,1654,330],{"class":121},[115,1656,734],{"class":175},[115,1658,305],{"class":175},[115,1660,1662,1664,1666,1668,1670,1672,1674,1676,1678,1680],{"class":117,"line":1661},33,[115,1663,1454],{"class":298},[115,1665,739],{"class":179},[115,1667,1459],{"class":175},[115,1669,1462],{"class":171},[115,1671,1465],{"class":175},[115,1673,1468],{"class":179},[115,1675,35],{"class":175},[115,1677,1613],{"class":275},[115,1679,279],{"class":323},[115,1681,1682],{"class":175},"{\n",[115,1684,1686,1689,1691,1693,1696],{"class":117,"line":1685},34,[115,1687,1688],{"class":323}," where",[115,1690,327],{"class":175},[115,1692,176],{"class":175},[115,1694,1695],{"class":179}," id",[115,1697,1698],{"class":175}," },\n",[115,1700,1702,1705,1707,1709,1711,1713,1715,1718],{"class":117,"line":1701},35,[115,1703,1704],{"class":323}," relations",[115,1706,327],{"class":175},[115,1708,176],{"class":175},[115,1710,1098],{"class":323},[115,1712,327],{"class":175},[115,1714,386],{"class":385},[115,1716,1717],{"class":175}," },",[115,1719,1720],{"class":747}," \u002F\u002F by doing this, we're implementing the eager loading to automatically load the profile object\n",[115,1722,1724,1727,1729],{"class":117,"line":1723},36,[115,1725,1726],{"class":175}," }",[115,1728,734],{"class":323},[115,1730,198],{"class":175},[115,1732,1734],{"class":117,"line":1733},37,[115,1735,266],{"emptyLinePlaceholder":265},[115,1737,1739,1742,1744,1747,1749,1752,1755,1757,1759,1761,1763,1766,1768,1770,1772,1774,1777,1779],{"class":117,"line":1738},38,[115,1740,1741],{"class":171}," if",[115,1743,727],{"class":323},[115,1745,1746],{"class":175},"!",[115,1748,731],{"class":179},[115,1750,1751],{"class":323},") ",[115,1753,1754],{"class":171},"throw",[115,1756,1505],{"class":175},[115,1758,1154],{"class":275},[115,1760,279],{"class":323},[115,1762,195],{"class":175},[115,1764,1765],{"class":125},"user not found",[115,1767,195],{"class":175},[115,1769,233],{"class":175},[115,1771,1159],{"class":179},[115,1773,35],{"class":175},[115,1775,1776],{"class":179},"NOT_FOUND",[115,1778,734],{"class":323},[115,1780,198],{"class":175},[115,1782,1784],{"class":117,"line":1783},39,[115,1785,266],{"emptyLinePlaceholder":265},[115,1787,1789,1791,1793],{"class":117,"line":1788},40,[115,1790,1608],{"class":171},[115,1792,739],{"class":179},[115,1794,198],{"class":175},[115,1796,1798],{"class":117,"line":1797},41,[115,1799,1424],{"class":175},[115,1801,1803],{"class":117,"line":1802},42,[115,1804,502],{"class":175},[10,1806,1808],{"id":1807},"many-to-one-one-to-many","Many-To-One \u002F One-To-Many",[15,1810,1811,1812,70,1814,1817],{},"Many-to-one \u002F one-to-many est une relation où A contient plusieurs instances de B, mais B ne\ncontient qu'une seule instance de A. Prenons par exemple les entités ",[53,1813,96],{},[53,1815,1816],{},"Order",". Un\nutilisateur peut avoir plusieurs commandes, mais chaque commande n'appartient qu'à un seul\nutilisateur.",[15,1819,1820],{},"Mettons rapidement en place la ressource REST API orders.",[105,1822,1824],{"className":107,"code":1823,"filename":109,"language":110,"meta":111,"style":111}," nest g resource orders\n",[58,1825,1826],{"__ignoreMap":111},[115,1827,1828,1830,1832,1834],{"class":117,"line":118},[115,1829,122],{"class":121},[115,1831,126],{"class":125},[115,1833,129],{"class":125},[115,1835,1836],{"class":125}," orders\n",[105,1838,1840],{"className":162,"code":1839,"filename":158,"language":164,"meta":111,"style":111},"import { Order } from 'src\u002Forders\u002Fentities\u002Forder.entity';\n\n@Entity('users')\nexport class User {\n \u002F\u002F we add the following to user entity\n @OneToMany(() => Order, (order) => order.user)\n orders: Order[];\n}\n",[58,1841,1842,1864,1868,1884,1894,1899,1932,1946],{"__ignoreMap":111},[115,1843,1844,1846,1848,1851,1853,1855,1857,1860,1862],{"class":117,"line":118},[115,1845,172],{"class":171},[115,1847,176],{"class":175},[115,1849,1850],{"class":179}," Order",[115,1852,183],{"class":175},[115,1854,186],{"class":171},[115,1856,189],{"class":175},[115,1858,1859],{"class":125},"src\u002Forders\u002Fentities\u002Forder.entity",[115,1861,195],{"class":175},[115,1863,198],{"class":175},[115,1865,1866],{"class":117,"line":135},[115,1867,266],{"emptyLinePlaceholder":265},[115,1869,1870,1872,1874,1876,1878,1880,1882],{"class":117,"line":223},[115,1871,272],{"class":175},[115,1873,276],{"class":275},[115,1875,279],{"class":179},[115,1877,195],{"class":175},[115,1879,284],{"class":125},[115,1881,195],{"class":175},[115,1883,289],{"class":179},[115,1885,1886,1888,1890,1892],{"class":117,"line":262},[115,1887,295],{"class":171},[115,1889,299],{"class":298},[115,1891,302],{"class":121},[115,1893,305],{"class":175},[115,1895,1896],{"class":117,"line":269},[115,1897,1898],{"class":747}," \u002F\u002F we add the following to user entity\n",[115,1900,1901,1903,1906,1908,1910,1912,1914,1916,1918,1921,1923,1925,1928,1930],{"class":117,"line":292},[115,1902,311],{"class":175},[115,1904,1905],{"class":275},"OneToMany",[115,1907,279],{"class":179},[115,1909,717],{"class":175},[115,1911,720],{"class":298},[115,1913,1850],{"class":179},[115,1915,233],{"class":175},[115,1917,727],{"class":175},[115,1919,1920],{"class":730},"order",[115,1922,734],{"class":175},[115,1924,720],{"class":298},[115,1926,1927],{"class":179}," order",[115,1929,35],{"class":175},[115,1931,1103],{"class":179},[115,1933,1934,1937,1939,1941,1944],{"class":117,"line":308},[115,1935,1936],{"class":323}," orders",[115,1938,327],{"class":175},[115,1940,1850],{"class":121},[115,1942,1943],{"class":179},"[]",[115,1945,198],{"class":175},[115,1947,1948],{"class":117,"line":320},[115,1949,502],{"class":175},[105,1951,1954],{"className":162,"code":1952,"filename":1953,"language":164,"meta":111,"style":111},"import { OrderStatus } from 'src\u002Fenums\u002Forder.status';\nimport { User } from 'src\u002Fusers\u002Fentities\u002Fuser.entity';\nimport { Column, CreateDateColumn, Entity, ManyToOne, PrimaryGeneratedColumn } from 'typeorm';\n\n@Entity('orders')\nexport class Order {\n @PrimaryGeneratedColumn()\n id: number;\n\n @Column({ type: 'enum', enum: OrderStatus, default: OrderStatus.PLACED })\n status: string; \u002F\u002F the order status\n\n @Column()\n amount: number;\n\n @ManyToOne(() => User, (user) => user.orders)\n user: User;\n\n @CreateDateColumn()\n created_datetime?: Date;\n}\n","order.entity.ts",[58,1955,1956,1978,1998,2036,2040,2057,2067,2075,2085,2089,2134,2148,2152,2160,2171,2175,2207,2217,2221,2230,2242],{"__ignoreMap":111},[115,1957,1958,1960,1962,1965,1967,1969,1971,1974,1976],{"class":117,"line":118},[115,1959,172],{"class":171},[115,1961,176],{"class":175},[115,1963,1964],{"class":179}," OrderStatus",[115,1966,183],{"class":175},[115,1968,186],{"class":171},[115,1970,189],{"class":175},[115,1972,1973],{"class":125},"src\u002Fenums\u002Forder.status",[115,1975,195],{"class":175},[115,1977,198],{"class":175},[115,1979,1980,1982,1984,1986,1988,1990,1992,1994,1996],{"class":117,"line":135},[115,1981,172],{"class":171},[115,1983,176],{"class":175},[115,1985,302],{"class":179},[115,1987,183],{"class":175},[115,1989,186],{"class":171},[115,1991,189],{"class":175},[115,1993,539],{"class":125},[115,1995,195],{"class":175},[115,1997,198],{"class":175},[115,1999,2000,2002,2004,2006,2008,2011,2013,2015,2017,2020,2022,2024,2026,2028,2030,2032,2034],{"class":117,"line":223},[115,2001,172],{"class":171},[115,2003,176],{"class":175},[115,2005,230],{"class":179},[115,2007,233],{"class":175},[115,2009,2010],{"class":179}," CreateDateColumn",[115,2012,233],{"class":175},[115,2014,236],{"class":179},[115,2016,233],{"class":175},[115,2018,2019],{"class":179}," ManyToOne",[115,2021,233],{"class":175},[115,2023,246],{"class":179},[115,2025,183],{"class":175},[115,2027,186],{"class":171},[115,2029,189],{"class":175},[115,2031,255],{"class":125},[115,2033,195],{"class":175},[115,2035,198],{"class":175},[115,2037,2038],{"class":117,"line":262},[115,2039,266],{"emptyLinePlaceholder":265},[115,2041,2042,2044,2046,2048,2050,2053,2055],{"class":117,"line":269},[115,2043,272],{"class":175},[115,2045,276],{"class":275},[115,2047,279],{"class":179},[115,2049,195],{"class":175},[115,2051,2052],{"class":125},"orders",[115,2054,195],{"class":175},[115,2056,289],{"class":179},[115,2058,2059,2061,2063,2065],{"class":117,"line":292},[115,2060,295],{"class":171},[115,2062,299],{"class":298},[115,2064,1850],{"class":121},[115,2066,305],{"class":175},[115,2068,2069,2071,2073],{"class":117,"line":308},[115,2070,311],{"class":175},[115,2072,314],{"class":275},[115,2074,317],{"class":179},[115,2076,2077,2079,2081,2083],{"class":117,"line":320},[115,2078,324],{"class":323},[115,2080,327],{"class":175},[115,2082,330],{"class":121},[115,2084,198],{"class":175},[115,2086,2087],{"class":117,"line":335},[115,2088,266],{"emptyLinePlaceholder":265},[115,2090,2091,2093,2095,2097,2099,2101,2103,2105,2107,2109,2111,2113,2115,2117,2119,2121,2123,2125,2127,2130,2132],{"class":117,"line":340},[115,2092,311],{"class":175},[115,2094,345],{"class":275},[115,2096,279],{"class":179},[115,2098,377],{"class":175},[115,2100,447],{"class":323},[115,2102,327],{"class":175},[115,2104,189],{"class":175},[115,2106,454],{"class":125},[115,2108,195],{"class":175},[115,2110,233],{"class":175},[115,2112,461],{"class":323},[115,2114,327],{"class":175},[115,2116,1964],{"class":179},[115,2118,233],{"class":175},[115,2120,470],{"class":323},[115,2122,327],{"class":175},[115,2124,1964],{"class":179},[115,2126,35],{"class":175},[115,2128,2129],{"class":179},"PLACED ",[115,2131,482],{"class":175},[115,2133,289],{"class":179},[115,2135,2136,2139,2141,2143,2145],{"class":117,"line":350},[115,2137,2138],{"class":323}," status",[115,2140,327],{"class":175},[115,2142,358],{"class":121},[115,2144,1482],{"class":175},[115,2146,2147],{"class":747}," \u002F\u002F the order status\n",[115,2149,2150],{"class":117,"line":363},[115,2151,266],{"emptyLinePlaceholder":265},[115,2153,2154,2156,2158],{"class":117,"line":368},[115,2155,311],{"class":175},[115,2157,345],{"class":275},[115,2159,317],{"class":179},[115,2161,2162,2165,2167,2169],{"class":117,"line":393},[115,2163,2164],{"class":323}," amount",[115,2166,327],{"class":175},[115,2168,330],{"class":121},[115,2170,198],{"class":175},[115,2172,2173],{"class":117,"line":405},[115,2174,266],{"emptyLinePlaceholder":265},[115,2176,2177,2179,2182,2184,2186,2188,2190,2192,2194,2196,2198,2200,2202,2204],{"class":117,"line":410},[115,2178,311],{"class":175},[115,2180,2181],{"class":275},"ManyToOne",[115,2183,279],{"class":179},[115,2185,717],{"class":175},[115,2187,720],{"class":298},[115,2189,302],{"class":179},[115,2191,233],{"class":175},[115,2193,727],{"class":175},[115,2195,731],{"class":730},[115,2197,734],{"class":175},[115,2199,720],{"class":298},[115,2201,739],{"class":179},[115,2203,35],{"class":175},[115,2205,2206],{"class":179},"orders)\n",[115,2208,2209,2211,2213,2215],{"class":117,"line":419},[115,2210,762],{"class":323},[115,2212,327],{"class":175},[115,2214,302],{"class":121},[115,2216,198],{"class":175},[115,2218,2219],{"class":117,"line":431},[115,2220,266],{"emptyLinePlaceholder":265},[115,2222,2223,2225,2228],{"class":117,"line":436},[115,2224,311],{"class":175},[115,2226,2227],{"class":275},"CreateDateColumn",[115,2229,317],{"class":179},[115,2231,2232,2235,2237,2240],{"class":117,"line":487},[115,2233,2234],{"class":323}," created_datetime",[115,2236,662],{"class":175},[115,2238,2239],{"class":121}," Date",[115,2241,198],{"class":175},[115,2243,2244],{"class":117,"line":499},[115,2245,502],{"class":175},[15,2247,2248,2249,2252,2253,2256,2257,2259,2260,2262,2263,2265,2266,1132,2268,2270,2271,2273,2274,2276,2277,2279,2280,2282],{},"On a ajouté ",[58,2250,2251],{},"@OneToMany"," à la propriété orders et défini Order comme le type de la relation\ncible. Dans une relation ",[58,2254,2255],{},"@ManyToOne"," \u002F ",[58,2258,2251],{},", tu peux omettre ",[58,2261,1131],{},".\n",[58,2264,2255],{}," ne peut pas exister sans ",[58,2267,2251],{},[58,2269,2255],{}," est requis si tu veux\nutiliser ",[58,2272,2251],{},". Cependant, si seul ",[58,2275,2255],{}," t'intéresse, tu peux le définir sans\navoir ",[58,2278,2251],{}," sur l'entité associée. Partout où ",[58,2281,2255],{}," est configuré, son entité\nliée aura un « relation id » et une clé étrangère.",[795,2284,2286],{"id":2285},"sauvegarder-et-récupérer-une-relation-one-to-many-many-to-one","Sauvegarder et récupérer une relation one-to-many \u002F many-to-one",[15,2288,2289],{},"Voici le service order complet qui implémente un CRUD sur les commandes :",[105,2291,2294],{"className":162,"code":2292,"filename":2293,"language":164,"meta":111,"style":111},"import { Injectable } from '@nestjs\u002Fcommon';\nimport { CreateOrderDto } from '.\u002Fdto\u002Fcreate-order.dto';\nimport { UpdateOrderDto } from '.\u002Fdto\u002Fupdate-order.dto';\nimport { InjectRepository } from '@nestjs\u002Ftypeorm';\nimport { Order } from '.\u002Fentities\u002Forder.entity';\nimport { Repository } from 'typeorm';\nimport { UsersService } from 'src\u002Fusers\u002Fusers.service';\n\n@Injectable()\nexport class OrdersService {\n constructor(\n @InjectRepository(Order)\n private readonly orderRepository: Repository\u003COrder>,\n private readonly userService: UsersService,\n ) {\n }\n\n async create(userId: number, createOrderDto: CreateOrderDto) {\n const user = await this.userService.findOne(userId);\n\n const order = new Order();\n order.amount = createOrderDto.amount;\n order.user = user;\n\n return await this.orderRepository.save(order);\n }\n\n async findAll(userId: number): Promise\u003COrder[]> {\n const user = await this.userService.findOne(userId);\n return await this.orderRepository.find({\n where: { user },\n });\n }\n\n async findOne(id: number): Promise\u003COrder | null> {\n return await this.orderRepository.findOneBy({ id });\n }\n}\n\n","order.Service.ts",[58,2295,2296,2316,2338,2360,2380,2401,2421,2442,2446,2454,2465,2471,2480,2501,2517,2523,2527,2531,2558,2585,2589,2605,2625,2639,2643,2666,2670,2674,2706,2732,2751,2763,2771,2775,2779,2811,2838,2842],{"__ignoreMap":111},[115,2297,2298,2300,2302,2304,2306,2308,2310,2312,2314],{"class":117,"line":118},[115,2299,172],{"class":171},[115,2301,176],{"class":175},[115,2303,1164],{"class":179},[115,2305,183],{"class":175},[115,2307,186],{"class":171},[115,2309,189],{"class":175},[115,2311,1173],{"class":125},[115,2313,195],{"class":175},[115,2315,198],{"class":175},[115,2317,2318,2320,2322,2325,2327,2329,2331,2334,2336],{"class":117,"line":135},[115,2319,172],{"class":171},[115,2321,176],{"class":175},[115,2323,2324],{"class":179}," CreateOrderDto",[115,2326,183],{"class":175},[115,2328,186],{"class":171},[115,2330,189],{"class":175},[115,2332,2333],{"class":125},".\u002Fdto\u002Fcreate-order.dto",[115,2335,195],{"class":175},[115,2337,198],{"class":175},[115,2339,2340,2342,2344,2347,2349,2351,2353,2356,2358],{"class":117,"line":223},[115,2341,172],{"class":171},[115,2343,176],{"class":175},[115,2345,2346],{"class":179}," UpdateOrderDto",[115,2348,183],{"class":175},[115,2350,186],{"class":171},[115,2352,189],{"class":175},[115,2354,2355],{"class":125},".\u002Fdto\u002Fupdate-order.dto",[115,2357,195],{"class":175},[115,2359,198],{"class":175},[115,2361,2362,2364,2366,2368,2370,2372,2374,2376,2378],{"class":117,"line":262},[115,2363,172],{"class":171},[115,2365,176],{"class":175},[115,2367,1230],{"class":179},[115,2369,183],{"class":175},[115,2371,186],{"class":171},[115,2373,189],{"class":175},[115,2375,1239],{"class":125},[115,2377,195],{"class":175},[115,2379,198],{"class":175},[115,2381,2382,2384,2386,2388,2390,2392,2394,2397,2399],{"class":117,"line":269},[115,2383,172],{"class":171},[115,2385,176],{"class":175},[115,2387,1850],{"class":179},[115,2389,183],{"class":175},[115,2391,186],{"class":171},[115,2393,189],{"class":175},[115,2395,2396],{"class":125},".\u002Fentities\u002Forder.entity",[115,2398,195],{"class":175},[115,2400,198],{"class":175},[115,2402,2403,2405,2407,2409,2411,2413,2415,2417,2419],{"class":117,"line":292},[115,2404,172],{"class":171},[115,2406,176],{"class":175},[115,2408,1252],{"class":179},[115,2410,183],{"class":175},[115,2412,186],{"class":171},[115,2414,189],{"class":175},[115,2416,255],{"class":125},[115,2418,195],{"class":175},[115,2420,198],{"class":175},[115,2422,2423,2425,2427,2429,2431,2433,2435,2438,2440],{"class":117,"line":308},[115,2424,172],{"class":171},[115,2426,176],{"class":175},[115,2428,1349],{"class":179},[115,2430,183],{"class":175},[115,2432,186],{"class":171},[115,2434,189],{"class":175},[115,2436,2437],{"class":125},"src\u002Fusers\u002Fusers.service",[115,2439,195],{"class":175},[115,2441,198],{"class":175},[115,2443,2444],{"class":117,"line":320},[115,2445,266],{"emptyLinePlaceholder":265},[115,2447,2448,2450,2452],{"class":117,"line":335},[115,2449,272],{"class":175},[115,2451,1338],{"class":275},[115,2453,317],{"class":179},[115,2455,2456,2458,2460,2463],{"class":117,"line":340},[115,2457,295],{"class":171},[115,2459,299],{"class":298},[115,2461,2462],{"class":121}," OrdersService",[115,2464,305],{"class":175},[115,2466,2467,2469],{"class":117,"line":350},[115,2468,1356],{"class":298},[115,2470,1359],{"class":175},[115,2472,2473,2475,2477],{"class":117,"line":363},[115,2474,1364],{"class":175},[115,2476,1367],{"class":275},[115,2478,2479],{"class":179},"(Order)\n",[115,2481,2482,2485,2488,2491,2493,2495,2497,2499],{"class":117,"line":368},[115,2483,2484],{"class":298}," private",[115,2486,2487],{"class":298}," readonly",[115,2489,2490],{"class":730}," orderRepository",[115,2492,327],{"class":175},[115,2494,1252],{"class":121},[115,2496,1383],{"class":175},[115,2498,1816],{"class":121},[115,2500,1388],{"class":175},[115,2502,2503,2505,2507,2510,2512,2514],{"class":117,"line":393},[115,2504,2484],{"class":298},[115,2506,2487],{"class":298},[115,2508,2509],{"class":730}," userService",[115,2511,327],{"class":175},[115,2513,1349],{"class":121},[115,2515,2516],{"class":175},",\n",[115,2518,2519,2521],{"class":117,"line":405},[115,2520,1417],{"class":175},[115,2522,305],{"class":175},[115,2524,2525],{"class":117,"line":410},[115,2526,1424],{"class":175},[115,2528,2529],{"class":117,"line":419},[115,2530,266],{"emptyLinePlaceholder":265},[115,2532,2533,2535,2537,2539,2541,2543,2545,2547,2550,2552,2554,2556],{"class":117,"line":431},[115,2534,1433],{"class":298},[115,2536,1436],{"class":323},[115,2538,279],{"class":175},[115,2540,788],{"class":730},[115,2542,327],{"class":175},[115,2544,330],{"class":121},[115,2546,233],{"class":175},[115,2548,2549],{"class":730}," createOrderDto",[115,2551,327],{"class":175},[115,2553,2324],{"class":121},[115,2555,734],{"class":175},[115,2557,305],{"class":175},[115,2559,2560,2562,2564,2566,2568,2570,2573,2575,2577,2579,2581,2583],{"class":117,"line":436},[115,2561,1454],{"class":298},[115,2563,739],{"class":179},[115,2565,1459],{"class":175},[115,2567,1462],{"class":171},[115,2569,1465],{"class":175},[115,2571,2572],{"class":179},"userService",[115,2574,35],{"class":175},[115,2576,1613],{"class":275},[115,2578,279],{"class":323},[115,2580,788],{"class":179},[115,2582,734],{"class":323},[115,2584,198],{"class":175},[115,2586,2587],{"class":117,"line":487},[115,2588,266],{"emptyLinePlaceholder":265},[115,2590,2591,2593,2595,2597,2599,2601,2603],{"class":117,"line":499},[115,2592,1454],{"class":298},[115,2594,1927],{"class":179},[115,2596,1459],{"class":175},[115,2598,1505],{"class":175},[115,2600,1850],{"class":275},[115,2602,717],{"class":323},[115,2604,198],{"class":175},[115,2606,2607,2610,2612,2615,2617,2619,2621,2623],{"class":117,"line":1072},[115,2608,2609],{"class":179}," order",[115,2611,35],{"class":175},[115,2613,2614],{"class":179},"amount",[115,2616,1459],{"class":175},[115,2618,2549],{"class":179},[115,2620,35],{"class":175},[115,2622,2614],{"class":179},[115,2624,198],{"class":175},[115,2626,2627,2629,2631,2633,2635,2637],{"class":117,"line":1106},[115,2628,2609],{"class":179},[115,2630,35],{"class":175},[115,2632,731],{"class":179},[115,2634,1459],{"class":175},[115,2636,739],{"class":179},[115,2638,198],{"class":175},[115,2640,2641],{"class":117,"line":1118},[115,2642,266],{"emptyLinePlaceholder":265},[115,2644,2645,2647,2649,2651,2654,2656,2658,2660,2662,2664],{"class":117,"line":1554},[115,2646,1608],{"class":171},[115,2648,1462],{"class":171},[115,2650,1465],{"class":175},[115,2652,2653],{"class":179},"orderRepository",[115,2655,35],{"class":175},[115,2657,1473],{"class":275},[115,2659,279],{"class":323},[115,2661,1920],{"class":179},[115,2663,734],{"class":323},[115,2665,198],{"class":175},[115,2667,2668],{"class":117,"line":1569},[115,2669,1424],{"class":175},[115,2671,2672],{"class":117,"line":1574},[115,2673,266],{"emptyLinePlaceholder":265},[115,2675,2676,2678,2681,2683,2685,2687,2689,2692,2695,2697,2699,2701,2704],{"class":117,"line":1600},[115,2677,1433],{"class":298},[115,2679,2680],{"class":323}," findAll",[115,2682,279],{"class":175},[115,2684,788],{"class":730},[115,2686,327],{"class":175},[115,2688,330],{"class":121},[115,2690,2691],{"class":175},"):",[115,2693,2694],{"class":121}," Promise",[115,2696,1383],{"class":175},[115,2698,1816],{"class":121},[115,2700,1943],{"class":179},[115,2702,2703],{"class":175},">",[115,2705,305],{"class":175},[115,2707,2708,2710,2712,2714,2716,2718,2720,2722,2724,2726,2728,2730],{"class":117,"line":1605},[115,2709,1454],{"class":298},[115,2711,739],{"class":179},[115,2713,1459],{"class":175},[115,2715,1462],{"class":171},[115,2717,1465],{"class":175},[115,2719,2572],{"class":179},[115,2721,35],{"class":175},[115,2723,1613],{"class":275},[115,2725,279],{"class":323},[115,2727,788],{"class":179},[115,2729,734],{"class":323},[115,2731,198],{"class":175},[115,2733,2734,2736,2738,2740,2742,2744,2747,2749],{"class":117,"line":1631},[115,2735,1608],{"class":171},[115,2737,1462],{"class":171},[115,2739,1465],{"class":175},[115,2741,2653],{"class":179},[115,2743,35],{"class":175},[115,2745,2746],{"class":275},"find",[115,2748,279],{"class":323},[115,2750,1682],{"class":175},[115,2752,2753,2755,2757,2759,2761],{"class":117,"line":1636},[115,2754,1688],{"class":323},[115,2756,327],{"class":175},[115,2758,176],{"class":175},[115,2760,739],{"class":179},[115,2762,1698],{"class":175},[115,2764,2765,2767,2769],{"class":117,"line":1641},[115,2766,1726],{"class":175},[115,2768,734],{"class":323},[115,2770,198],{"class":175},[115,2772,2773],{"class":117,"line":1661},[115,2774,1424],{"class":175},[115,2776,2777],{"class":117,"line":1685},[115,2778,266],{"emptyLinePlaceholder":265},[115,2780,2781,2783,2785,2787,2789,2791,2793,2795,2797,2799,2801,2804,2807,2809],{"class":117,"line":1701},[115,2782,1433],{"class":298},[115,2784,1646],{"class":323},[115,2786,279],{"class":175},[115,2788,792],{"class":730},[115,2790,327],{"class":175},[115,2792,330],{"class":121},[115,2794,2691],{"class":175},[115,2796,2694],{"class":121},[115,2798,1383],{"class":175},[115,2800,1816],{"class":121},[115,2802,2803],{"class":175}," |",[115,2805,2806],{"class":121}," null",[115,2808,2703],{"class":175},[115,2810,305],{"class":175},[115,2812,2813,2815,2817,2819,2821,2823,2826,2828,2830,2832,2834,2836],{"class":117,"line":1723},[115,2814,1608],{"class":171},[115,2816,1462],{"class":171},[115,2818,1465],{"class":175},[115,2820,2653],{"class":179},[115,2822,35],{"class":175},[115,2824,2825],{"class":275},"findOneBy",[115,2827,279],{"class":323},[115,2829,377],{"class":175},[115,2831,1695],{"class":179},[115,2833,183],{"class":175},[115,2835,734],{"class":323},[115,2837,198],{"class":175},[115,2839,2840],{"class":117,"line":1733},[115,2841,1424],{"class":175},[115,2843,2844],{"class":117,"line":1738},[115,2845,502],{"class":175},[10,2847,2849],{"id":2848},"relations-many-to-many","Relations Many-To-Many",[15,2851,2852,2853,70,2856,2858],{},"Many-to-many est une relation dans laquelle l'entité A contient plusieurs instances de\nl'entité B, et inversement. Par exemple, considérons les entités ",[53,2854,2855],{},"Product",[53,2857,1816],{},". Une\ncommande peut inclure plusieurs produits, et chaque produit peut appartenir à plusieurs\ncommandes.",[15,2860,2861,2862,159],{},"Explorons le contenu de ",[58,2863,517],{},[105,2865,2867],{"className":162,"code":2866,"filename":1953,"language":164,"meta":111,"style":111},"import { Product } from 'src\u002Fproducts\u002Fentities\u002Fproduct.entity';\nimport { ManyToMany, JoinTable } from 'typeorm';\n\n@Entity('orders')\nexport class Order {\n \u002F\u002F ..... other properties\n\n \u002F\u002F our new property\n @ManyToMany(() => Product)\n products: Product[];\n}\n",[58,2868,2869,2891,2917,2921,2937,2947,2952,2956,2961,2977,2990],{"__ignoreMap":111},[115,2870,2871,2873,2875,2878,2880,2882,2884,2887,2889],{"class":117,"line":118},[115,2872,172],{"class":171},[115,2874,176],{"class":175},[115,2876,2877],{"class":179}," Product",[115,2879,183],{"class":175},[115,2881,186],{"class":171},[115,2883,189],{"class":175},[115,2885,2886],{"class":125},"src\u002Fproducts\u002Fentities\u002Fproduct.entity",[115,2888,195],{"class":175},[115,2890,198],{"class":175},[115,2892,2893,2895,2897,2900,2902,2905,2907,2909,2911,2913,2915],{"class":117,"line":135},[115,2894,172],{"class":171},[115,2896,176],{"class":175},[115,2898,2899],{"class":179}," ManyToMany",[115,2901,233],{"class":175},[115,2903,2904],{"class":179}," JoinTable",[115,2906,183],{"class":175},[115,2908,186],{"class":171},[115,2910,189],{"class":175},[115,2912,255],{"class":125},[115,2914,195],{"class":175},[115,2916,198],{"class":175},[115,2918,2919],{"class":117,"line":223},[115,2920,266],{"emptyLinePlaceholder":265},[115,2922,2923,2925,2927,2929,2931,2933,2935],{"class":117,"line":262},[115,2924,272],{"class":175},[115,2926,276],{"class":275},[115,2928,279],{"class":179},[115,2930,195],{"class":175},[115,2932,2052],{"class":125},[115,2934,195],{"class":175},[115,2936,289],{"class":179},[115,2938,2939,2941,2943,2945],{"class":117,"line":269},[115,2940,295],{"class":171},[115,2942,299],{"class":298},[115,2944,1850],{"class":121},[115,2946,305],{"class":175},[115,2948,2949],{"class":117,"line":292},[115,2950,2951],{"class":747}," \u002F\u002F ..... other properties\n",[115,2953,2954],{"class":117,"line":308},[115,2955,266],{"emptyLinePlaceholder":265},[115,2957,2958],{"class":117,"line":320},[115,2959,2960],{"class":747}," \u002F\u002F our new property\n",[115,2962,2963,2965,2968,2970,2972,2974],{"class":117,"line":335},[115,2964,311],{"class":175},[115,2966,2967],{"class":275},"ManyToMany",[115,2969,279],{"class":179},[115,2971,717],{"class":175},[115,2973,720],{"class":298},[115,2975,2976],{"class":179}," Product)\n",[115,2978,2979,2982,2984,2986,2988],{"class":117,"line":340},[115,2980,2981],{"class":323}," products",[115,2983,327],{"class":175},[115,2985,2877],{"class":121},[115,2987,1943],{"class":179},[115,2989,198],{"class":175},[115,2991,2992],{"class":117,"line":350},[115,2993,502],{"class":175},[22,2995,2996],{},[15,2997,2998,3001,3002,3005,3006,3009],{},[58,2999,3000],{},"@JoinTable()"," est requis pour les relations ",[58,3003,3004],{},"@ManyToMany",". Tu dois mettre ",[58,3007,3008],{},"@JoinTable"," sur\nun seul côté (le côté propriétaire) de la relation.",[795,3011,3013],{"id":3012},"sauvegarder-des-relations-many-to-many","Sauvegarder des relations many-to-many",[15,3015,3016],{},"Mettons à jour le fichier de service order et ajoutons quelques lignes à la méthode create :",[105,3018,3020],{"className":162,"code":3019,"filename":2293,"language":164,"meta":111,"style":111},"export class OrdersService {\n \u002F\u002F ....previous stuffs \n\n async create(userId: number, createOrderDto: CreateOrderDto) {\n \u002F\u002F ..... previous stuffs\n\n const products = [];\n\n for (const product of createOrderDto.products) {\n try {\n const dbProduct = await this.productService.findOne(product);\n products.push(dbProduct);\n } catch (error) {\n \u002F\u002F We'll update this later\n console.log('failed to find product with id ' + product);\n }\n }\n\n order.products = products;\n\n \u002F\u002F .... previous stuffs\n }\n}\n",[58,3021,3022,3032,3037,3041,3067,3072,3076,3090,3094,3121,3128,3158,3177,3194,3199,3227,3232,3237,3241,3255,3259,3264,3268],{"__ignoreMap":111},[115,3023,3024,3026,3028,3030],{"class":117,"line":118},[115,3025,295],{"class":171},[115,3027,299],{"class":298},[115,3029,2462],{"class":121},[115,3031,305],{"class":175},[115,3033,3034],{"class":117,"line":135},[115,3035,3036],{"class":747}," \u002F\u002F ....previous stuffs \n",[115,3038,3039],{"class":117,"line":223},[115,3040,266],{"emptyLinePlaceholder":265},[115,3042,3043,3045,3047,3049,3051,3053,3055,3057,3059,3061,3063,3065],{"class":117,"line":262},[115,3044,1433],{"class":298},[115,3046,1436],{"class":323},[115,3048,279],{"class":175},[115,3050,788],{"class":730},[115,3052,327],{"class":175},[115,3054,330],{"class":121},[115,3056,233],{"class":175},[115,3058,2549],{"class":730},[115,3060,327],{"class":175},[115,3062,2324],{"class":121},[115,3064,734],{"class":175},[115,3066,305],{"class":175},[115,3068,3069],{"class":117,"line":269},[115,3070,3071],{"class":747}," \u002F\u002F ..... previous stuffs\n",[115,3073,3074],{"class":117,"line":292},[115,3075,266],{"emptyLinePlaceholder":265},[115,3077,3078,3080,3083,3085,3088],{"class":117,"line":308},[115,3079,1454],{"class":298},[115,3081,3082],{"class":179}," products",[115,3084,1459],{"class":175},[115,3086,3087],{"class":323}," []",[115,3089,198],{"class":175},[115,3091,3092],{"class":117,"line":320},[115,3093,266],{"emptyLinePlaceholder":265},[115,3095,3096,3099,3101,3104,3107,3110,3112,3114,3117,3119],{"class":117,"line":335},[115,3097,3098],{"class":171}," for",[115,3100,727],{"class":323},[115,3102,3103],{"class":298},"const",[115,3105,3106],{"class":179}," product",[115,3108,3109],{"class":175}," of",[115,3111,2549],{"class":179},[115,3113,35],{"class":175},[115,3115,3116],{"class":179},"products",[115,3118,1751],{"class":323},[115,3120,1682],{"class":175},[115,3122,3123,3126],{"class":117,"line":340},[115,3124,3125],{"class":171}," try",[115,3127,305],{"class":175},[115,3129,3130,3133,3136,3138,3140,3142,3145,3147,3149,3151,3154,3156],{"class":117,"line":350},[115,3131,3132],{"class":298}," const",[115,3134,3135],{"class":179}," dbProduct",[115,3137,1459],{"class":175},[115,3139,1462],{"class":171},[115,3141,1465],{"class":175},[115,3143,3144],{"class":179},"productService",[115,3146,35],{"class":175},[115,3148,1613],{"class":275},[115,3150,279],{"class":323},[115,3152,3153],{"class":179},"product",[115,3155,734],{"class":323},[115,3157,198],{"class":175},[115,3159,3160,3163,3165,3168,3170,3173,3175],{"class":117,"line":363},[115,3161,3162],{"class":179}," products",[115,3164,35],{"class":175},[115,3166,3167],{"class":275},"push",[115,3169,279],{"class":323},[115,3171,3172],{"class":179},"dbProduct",[115,3174,734],{"class":323},[115,3176,198],{"class":175},[115,3178,3179,3182,3185,3187,3190,3192],{"class":117,"line":368},[115,3180,3181],{"class":175}," }",[115,3183,3184],{"class":171}," catch",[115,3186,727],{"class":323},[115,3188,3189],{"class":179},"error",[115,3191,1751],{"class":323},[115,3193,1682],{"class":175},[115,3195,3196],{"class":117,"line":393},[115,3197,3198],{"class":747}," \u002F\u002F We'll update this later\n",[115,3200,3201,3204,3206,3209,3211,3213,3216,3218,3221,3223,3225],{"class":117,"line":405},[115,3202,3203],{"class":179}," console",[115,3205,35],{"class":175},[115,3207,3208],{"class":275},"log",[115,3210,279],{"class":323},[115,3212,195],{"class":175},[115,3214,3215],{"class":125},"failed to find product with id ",[115,3217,195],{"class":175},[115,3219,3220],{"class":175}," +",[115,3222,3106],{"class":179},[115,3224,734],{"class":323},[115,3226,198],{"class":175},[115,3228,3229],{"class":117,"line":410},[115,3230,3231],{"class":175}," }\n",[115,3233,3234],{"class":117,"line":419},[115,3235,3236],{"class":175}," }\n",[115,3238,3239],{"class":117,"line":431},[115,3240,266],{"emptyLinePlaceholder":265},[115,3242,3243,3245,3247,3249,3251,3253],{"class":117,"line":436},[115,3244,2609],{"class":179},[115,3246,35],{"class":175},[115,3248,3116],{"class":179},[115,3250,1459],{"class":175},[115,3252,3082],{"class":179},[115,3254,198],{"class":175},[115,3256,3257],{"class":117,"line":487},[115,3258,266],{"emptyLinePlaceholder":265},[115,3260,3261],{"class":117,"line":499},[115,3262,3263],{"class":747}," \u002F\u002F .... previous stuffs\n",[115,3265,3266],{"class":117,"line":1072},[115,3267,1424],{"class":175},[115,3269,3270],{"class":117,"line":1106},[115,3271,502],{"class":175},[795,3273,3275],{"id":3274},"charger-des-relations-many-to-many","Charger des relations many-to-many",[15,3277,3278],{},"Pour charger des commandes avec leurs produits, tu dois spécifier la relation dans les\nFindOptions :",[105,3280,3282],{"className":162,"code":3281,"filename":2293,"language":164,"meta":111,"style":111},"export class OrdersService {\n \u002F\u002F ....previous stuffs \n\n async findOne(id: number): Promise\u003COrder | null> {\n return await this.orderRepository.findOne({\n relations: {\n products: true,\n },\n where: { id },\n });\n }\n}\n",[58,3283,3284,3294,3298,3302,3332,3350,3358,3368,3373,3385,3393,3397],{"__ignoreMap":111},[115,3285,3286,3288,3290,3292],{"class":117,"line":118},[115,3287,295],{"class":171},[115,3289,299],{"class":298},[115,3291,2462],{"class":121},[115,3293,305],{"class":175},[115,3295,3296],{"class":117,"line":135},[115,3297,3036],{"class":747},[115,3299,3300],{"class":117,"line":223},[115,3301,266],{"emptyLinePlaceholder":265},[115,3303,3304,3306,3308,3310,3312,3314,3316,3318,3320,3322,3324,3326,3328,3330],{"class":117,"line":262},[115,3305,1433],{"class":298},[115,3307,1646],{"class":323},[115,3309,279],{"class":175},[115,3311,792],{"class":730},[115,3313,327],{"class":175},[115,3315,330],{"class":121},[115,3317,2691],{"class":175},[115,3319,2694],{"class":121},[115,3321,1383],{"class":175},[115,3323,1816],{"class":121},[115,3325,2803],{"class":175},[115,3327,2806],{"class":121},[115,3329,2703],{"class":175},[115,3331,305],{"class":175},[115,3333,3334,3336,3338,3340,3342,3344,3346,3348],{"class":117,"line":269},[115,3335,1608],{"class":171},[115,3337,1462],{"class":171},[115,3339,1465],{"class":175},[115,3341,2653],{"class":179},[115,3343,35],{"class":175},[115,3345,1613],{"class":275},[115,3347,279],{"class":323},[115,3349,1682],{"class":175},[115,3351,3352,3354,3356],{"class":117,"line":292},[115,3353,1704],{"class":323},[115,3355,327],{"class":175},[115,3357,305],{"class":175},[115,3359,3360,3362,3364,3366],{"class":117,"line":308},[115,3361,3162],{"class":323},[115,3363,327],{"class":175},[115,3365,386],{"class":385},[115,3367,2516],{"class":175},[115,3369,3370],{"class":117,"line":320},[115,3371,3372],{"class":175}," },\n",[115,3374,3375,3377,3379,3381,3383],{"class":117,"line":335},[115,3376,1688],{"class":323},[115,3378,327],{"class":175},[115,3380,176],{"class":175},[115,3382,1695],{"class":179},[115,3384,1698],{"class":175},[115,3386,3387,3389,3391],{"class":117,"line":340},[115,3388,1726],{"class":175},[115,3390,734],{"class":323},[115,3392,198],{"class":175},[115,3394,3395],{"class":117,"line":350},[115,3396,1424],{"class":175},[115,3398,3399],{"class":117,"line":363},[115,3400,502],{"class":175},[10,3402,3404],{"id":3403},"résumé","Résumé",[15,3406,3407],{},"On a plongé en profondeur dans le monde des relations de données avec NestJS, TypeORM et les\nbases SQL dans cet article étendu. Ce cours t'aidera, que tu sois un développeur NestJS\nexpérimenté qui veut élargir son expertise ou un débutant désireux d'apprendre les nuances des\nrelations de données. Reste à l'écoute pour le prochain article, où on plongera dans la\nvalidation des données et la gestion d'erreurs, en t'équipant d'encore plus d'outils pour\ndevenir un expert NestJS. Rejoins-moi dans cette aventure, et maîtrisons ensemble l'art des\nrelations de données dans NestJS !",[3409,3410,3411],"style",{},"html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sfNiH, html code.shiki .sfNiH{--shiki-light:#FF5370;--shiki-default:#FF9CAC;--shiki-dark:#FF9CAC}html pre.shiki code .sHdIc, html code.shiki .sHdIc{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}",{"title":111,"searchDepth":135,"depth":135,"links":3413},[3414,3415,3416,3420,3423,3427],{"id":12,"depth":135,"text":13},{"id":38,"depth":135,"text":39},{"id":89,"depth":135,"text":90,"children":3417},[3418,3419],{"id":797,"depth":223,"text":798},{"id":1138,"depth":223,"text":1139},{"id":1807,"depth":135,"text":1808,"children":3421},[3422],{"id":2285,"depth":223,"text":2286},{"id":2848,"depth":135,"text":2849,"children":3424},[3425,3426],{"id":3012,"depth":223,"text":3013},{"id":3274,"depth":223,"text":3275},{"id":3403,"depth":135,"text":3404},"2023-10-18","Libère la puissance des relations de données avec NestJS, TypeORM et les bases SQL. Maîtrise l'art de construire des structures de données complexes et des interactions fluides. Idéal pour les développeurs NestJS expérimentés comme pour les débutants qui veulent créer des applications à la pointe.","md","https:\u002F\u002Fres.cloudinary.com\u002Fdpdwhd6ka\u002Fimage\u002Fupload\u002Fv1692780505\u002FBlog\u002Farticles\u002Fnest-js\u002Fazgcjzm8pwgdckdybir9.svg",{},"\u002Fbackend\u002Fnest-js\u002Funlocking-the-power-of-relationships-with-typeorm.fr",{"title":5,"description":3429},"unlocking-the-power-of-relationships-with-typeorm","2.backend\u002F1.nest-js\u002F4.unlocking-the-power-of-relationships-with-typeorm.fr",[3438,3439,3440],"Nest-JS","Mirco-service","API",[3442,3443],"nest-js","backend","eKO_TFItzD7OmMuYjsW6XzBxsj_GjsCjqGu4YOOyloc",{"id":3446,"title":3447,"body":3448,"date":3428,"description":6487,"extension":3430,"img":3431,"meta":6488,"navigation":265,"path":6489,"seo":6490,"slug":3435,"stem":6491,"tags":6492,"topics":6493,"__hash__":6494},"content\u002F2.backend\u002F1.nest-js\u002F4.unlocking-the-power-of-relationships-with-typeorm.md","Mastering NestJS: Unlocking the Power of Relationships with TypeORM and SQL Databases",{"type":7,"value":3449,"toc":6471},[3450,3452,3455,3458,3468,3472,3475,3478,3501,3504,3508,3511,3514,3538,3541,3544,3549,3813,3818,3824,4058,4064,4070,4074,4077,4080,4388,4393,4399,4403,4981,4985,4988,4991,5005,5109,5389,5422,5426,5429,5957,5961,5964,5969,6089,6102,6106,6109,6335,6339,6342,6462,6466,6469],[10,3451,13],{"id":12},[15,3453,3454],{},"Welcome to \"Mastering NestJS: Unlocking the Power of Relationships with TypeORM and SQL Databases.\" In this blog post,\nwe'll look at how NestJS, in conjunction with TypeORM and SQL databases, can help you build complicated data structures\nand handle interactions between them. By the end of this tutorial, you'll be able to construct APIs that handle complex\ndata connections with ease, taking your NestJS knowledge to the next level.",[15,3456,3457],{},"Whether you're a seasoned NestJS developer hoping to expand your knowledge or a beginner eager to master the ins and\nouts of data relationships, this comprehensive investigation of data relationships will provide you with the experience\nneeded to construct cutting-edge apps. So, let's get started and learn how to design strong, interconnected systems with\nNestJS, TypeORM, and SQL databases.",[22,3459,3460],{},[15,3461,3462,3463],{},"I created a GitHub repo for this series accessible at the following\n",[28,3464,3467],{"href":30,"rel":3465,"title":3466},[32],"Awesome nest-js project","address",[10,3469,3471],{"id":3470},"what-are-relations","What are relations",[15,3473,3474],{},"Relations are connections formed between two or more tables. Relations are formed using common fields from each table,\nwhich frequently include primary and foreign keys.",[15,3476,3477],{},"There are three kinds of relationships:",[47,3479,3480,3486,3495],{},[50,3481,3482,3483,3485],{},"One-to-one: Every row in the primary table has exactly one row in the foreign table. To define this type of\nrelationship, use the ",[58,3484,60],{}," decorator.",[50,3487,3488,3489,3491,3492,3494],{},"One-to-many\u002FMany-to-one: Every row in the primary table is connected to one or more rows in the foreign table. To\ndefine this type of relationship, we use the ",[58,3490,69],{}," and ",[58,3493,73],{}," decorators.",[50,3496,3497,3498,3500],{},"Many-to-many: Every row in the primary table has many related rows in the foreign table, and every record in the\nforeign table has many related rows in the primary table. Use the ",[58,3499,82],{}," decorator to define this type of\nrelation.",[15,3502,3503],{},"We will now go over each of these terms in detail",[10,3505,3507],{"id":3506},"one-to-many","One-To-Many",[15,3509,3510],{},"One-to-one is a relation where A contains only one instance of B, and B contains only one instance of A. Let's take for\nexample User and Profile entities. User can have only a single profile, and a single profile is owned by only a single\nuser.",[15,3512,3513],{},"Since we were going to implement authentication and authorization in the next post, we should start creating related\nresources. So let's create profiles and users Rest API resources.",[105,3515,3516],{"className":107,"code":108,"filename":109,"language":110,"meta":111,"style":111},[58,3517,3518,3528],{"__ignoreMap":111},[115,3519,3520,3522,3524,3526],{"class":117,"line":118},[115,3521,122],{"class":121},[115,3523,126],{"class":125},[115,3525,129],{"class":125},[115,3527,132],{"class":125},[115,3529,3530,3532,3534,3536],{"class":117,"line":135},[115,3531,122],{"class":121},[115,3533,126],{"class":125},[115,3535,129],{"class":125},[115,3537,144],{"class":125},[15,3539,3540],{},"See the following output for creating profiles resource",[149,3542],{"alt":3543,"source":152},"Create nest resource",[15,3545,3546,3547],{},"Let's explore ",[58,3548,158],{},[105,3550,3551],{"className":162,"code":163,"filename":158,"language":164,"meta":111,"style":111},[58,3552,3553,3573,3593,3625,3629,3645,3655,3663,3673,3677,3685,3695,3699,3719,3729,3733,3741,3751,3755,3799,3809],{"__ignoreMap":111},[115,3554,3555,3557,3559,3561,3563,3565,3567,3569,3571],{"class":117,"line":118},[115,3556,172],{"class":171},[115,3558,176],{"class":175},[115,3560,180],{"class":179},[115,3562,183],{"class":175},[115,3564,186],{"class":171},[115,3566,189],{"class":175},[115,3568,192],{"class":125},[115,3570,195],{"class":175},[115,3572,198],{"class":175},[115,3574,3575,3577,3579,3581,3583,3585,3587,3589,3591],{"class":117,"line":135},[115,3576,172],{"class":171},[115,3578,176],{"class":175},[115,3580,207],{"class":179},[115,3582,183],{"class":175},[115,3584,186],{"class":171},[115,3586,189],{"class":175},[115,3588,216],{"class":125},[115,3590,195],{"class":175},[115,3592,198],{"class":175},[115,3594,3595,3597,3599,3601,3603,3605,3607,3609,3611,3613,3615,3617,3619,3621,3623],{"class":117,"line":223},[115,3596,172],{"class":171},[115,3598,176],{"class":175},[115,3600,230],{"class":179},[115,3602,233],{"class":175},[115,3604,236],{"class":179},[115,3606,233],{"class":175},[115,3608,241],{"class":179},[115,3610,233],{"class":175},[115,3612,246],{"class":179},[115,3614,183],{"class":175},[115,3616,186],{"class":171},[115,3618,189],{"class":175},[115,3620,255],{"class":125},[115,3622,195],{"class":175},[115,3624,198],{"class":175},[115,3626,3627],{"class":117,"line":262},[115,3628,266],{"emptyLinePlaceholder":265},[115,3630,3631,3633,3635,3637,3639,3641,3643],{"class":117,"line":269},[115,3632,272],{"class":175},[115,3634,276],{"class":275},[115,3636,279],{"class":179},[115,3638,195],{"class":175},[115,3640,284],{"class":125},[115,3642,195],{"class":175},[115,3644,289],{"class":179},[115,3646,3647,3649,3651,3653],{"class":117,"line":292},[115,3648,295],{"class":171},[115,3650,299],{"class":298},[115,3652,302],{"class":121},[115,3654,305],{"class":175},[115,3656,3657,3659,3661],{"class":117,"line":308},[115,3658,311],{"class":175},[115,3660,314],{"class":275},[115,3662,317],{"class":179},[115,3664,3665,3667,3669,3671],{"class":117,"line":320},[115,3666,324],{"class":323},[115,3668,327],{"class":175},[115,3670,330],{"class":121},[115,3672,198],{"class":175},[115,3674,3675],{"class":117,"line":335},[115,3676,266],{"emptyLinePlaceholder":265},[115,3678,3679,3681,3683],{"class":117,"line":340},[115,3680,311],{"class":175},[115,3682,345],{"class":275},[115,3684,317],{"class":179},[115,3686,3687,3689,3691,3693],{"class":117,"line":350},[115,3688,353],{"class":323},[115,3690,327],{"class":175},[115,3692,358],{"class":121},[115,3694,198],{"class":175},[115,3696,3697],{"class":117,"line":363},[115,3698,266],{"emptyLinePlaceholder":265},[115,3700,3701,3703,3705,3707,3709,3711,3713,3715,3717],{"class":117,"line":368},[115,3702,311],{"class":175},[115,3704,345],{"class":275},[115,3706,279],{"class":179},[115,3708,377],{"class":175},[115,3710,380],{"class":323},[115,3712,327],{"class":175},[115,3714,386],{"class":385},[115,3716,183],{"class":175},[115,3718,289],{"class":179},[115,3720,3721,3723,3725,3727],{"class":117,"line":393},[115,3722,396],{"class":323},[115,3724,327],{"class":175},[115,3726,358],{"class":121},[115,3728,198],{"class":175},[115,3730,3731],{"class":117,"line":405},[115,3732,266],{"emptyLinePlaceholder":265},[115,3734,3735,3737,3739],{"class":117,"line":410},[115,3736,311],{"class":175},[115,3738,345],{"class":275},[115,3740,317],{"class":179},[115,3742,3743,3745,3747,3749],{"class":117,"line":419},[115,3744,422],{"class":323},[115,3746,327],{"class":175},[115,3748,358],{"class":121},[115,3750,198],{"class":175},[115,3752,3753],{"class":117,"line":431},[115,3754,266],{"emptyLinePlaceholder":265},[115,3756,3757,3759,3761,3763,3765,3767,3769,3771,3773,3775,3777,3779,3781,3783,3785,3787,3789,3791,3793,3795,3797],{"class":117,"line":436},[115,3758,311],{"class":175},[115,3760,345],{"class":275},[115,3762,279],{"class":179},[115,3764,377],{"class":175},[115,3766,447],{"class":323},[115,3768,327],{"class":175},[115,3770,189],{"class":175},[115,3772,454],{"class":125},[115,3774,195],{"class":175},[115,3776,233],{"class":175},[115,3778,461],{"class":323},[115,3780,327],{"class":175},[115,3782,180],{"class":179},[115,3784,233],{"class":175},[115,3786,470],{"class":323},[115,3788,327],{"class":175},[115,3790,180],{"class":179},[115,3792,35],{"class":175},[115,3794,479],{"class":179},[115,3796,482],{"class":175},[115,3798,289],{"class":179},[115,3800,3801,3803,3805,3807],{"class":117,"line":487},[115,3802,490],{"class":323},[115,3804,327],{"class":175},[115,3806,358],{"class":121},[115,3808,198],{"class":175},[115,3810,3811],{"class":117,"line":499},[115,3812,502],{"class":175},[22,3814,3815],{},[15,3816,3817],{},"The UserRole enum is available in the source code. You should take a look at it if you want to see it is implemented",[15,3819,3820,3821,3823],{},"Now let's explore the ",[58,3822,517],{}," content",[105,3825,3826],{"className":162,"code":520,"filename":517,"language":164,"meta":111,"style":111},[58,3827,3828,3848,3884,3888,3904,3914,3922,3932,3936,3956,3966,3970,3990,4000,4004,4036,4044,4054],{"__ignoreMap":111},[115,3829,3830,3832,3834,3836,3838,3840,3842,3844,3846],{"class":117,"line":118},[115,3831,172],{"class":171},[115,3833,176],{"class":175},[115,3835,302],{"class":179},[115,3837,183],{"class":175},[115,3839,186],{"class":171},[115,3841,189],{"class":175},[115,3843,539],{"class":125},[115,3845,195],{"class":175},[115,3847,198],{"class":175},[115,3849,3850,3852,3854,3856,3858,3860,3862,3864,3866,3868,3870,3872,3874,3876,3878,3880,3882],{"class":117,"line":135},[115,3851,172],{"class":171},[115,3853,176],{"class":175},[115,3855,230],{"class":179},[115,3857,233],{"class":175},[115,3859,236],{"class":179},[115,3861,233],{"class":175},[115,3863,560],{"class":179},[115,3865,233],{"class":175},[115,3867,241],{"class":179},[115,3869,233],{"class":175},[115,3871,246],{"class":179},[115,3873,183],{"class":175},[115,3875,186],{"class":171},[115,3877,189],{"class":175},[115,3879,255],{"class":125},[115,3881,195],{"class":175},[115,3883,198],{"class":175},[115,3885,3886],{"class":117,"line":223},[115,3887,266],{"emptyLinePlaceholder":265},[115,3889,3890,3892,3894,3896,3898,3900,3902],{"class":117,"line":262},[115,3891,272],{"class":175},[115,3893,276],{"class":275},[115,3895,279],{"class":179},[115,3897,195],{"class":175},[115,3899,597],{"class":125},[115,3901,195],{"class":175},[115,3903,289],{"class":179},[115,3905,3906,3908,3910,3912],{"class":117,"line":269},[115,3907,295],{"class":171},[115,3909,299],{"class":298},[115,3911,207],{"class":121},[115,3913,305],{"class":175},[115,3915,3916,3918,3920],{"class":117,"line":292},[115,3917,311],{"class":175},[115,3919,314],{"class":275},[115,3921,317],{"class":179},[115,3923,3924,3926,3928,3930],{"class":117,"line":308},[115,3925,324],{"class":323},[115,3927,327],{"class":175},[115,3929,330],{"class":121},[115,3931,198],{"class":175},[115,3933,3934],{"class":117,"line":320},[115,3935,266],{"emptyLinePlaceholder":265},[115,3937,3938,3940,3942,3944,3946,3948,3950,3952,3954],{"class":117,"line":335},[115,3939,311],{"class":175},[115,3941,345],{"class":275},[115,3943,279],{"class":179},[115,3945,377],{"class":175},[115,3947,646],{"class":323},[115,3949,327],{"class":175},[115,3951,386],{"class":385},[115,3953,183],{"class":175},[115,3955,289],{"class":179},[115,3957,3958,3960,3962,3964],{"class":117,"line":340},[115,3959,659],{"class":323},[115,3961,662],{"class":175},[115,3963,358],{"class":121},[115,3965,198],{"class":175},[115,3967,3968],{"class":117,"line":350},[115,3969,266],{"emptyLinePlaceholder":265},[115,3971,3972,3974,3976,3978,3980,3982,3984,3986,3988],{"class":117,"line":363},[115,3973,311],{"class":175},[115,3975,345],{"class":275},[115,3977,279],{"class":179},[115,3979,377],{"class":175},[115,3981,646],{"class":323},[115,3983,327],{"class":175},[115,3985,386],{"class":385},[115,3987,183],{"class":175},[115,3989,289],{"class":179},[115,3991,3992,3994,3996,3998],{"class":117,"line":368},[115,3993,695],{"class":323},[115,3995,662],{"class":175},[115,3997,358],{"class":121},[115,3999,198],{"class":175},[115,4001,4002],{"class":117,"line":393},[115,4003,266],{"emptyLinePlaceholder":265},[115,4005,4006,4008,4010,4012,4014,4016,4018,4020,4022,4024,4026,4028,4030,4032,4034],{"class":117,"line":405},[115,4007,311],{"class":175},[115,4009,712],{"class":275},[115,4011,279],{"class":179},[115,4013,717],{"class":175},[115,4015,720],{"class":298},[115,4017,302],{"class":179},[115,4019,233],{"class":175},[115,4021,727],{"class":175},[115,4023,731],{"class":730},[115,4025,734],{"class":175},[115,4027,720],{"class":298},[115,4029,739],{"class":179},[115,4031,35],{"class":175},[115,4033,744],{"class":179},[115,4035,748],{"class":747},[115,4037,4038,4040,4042],{"class":117,"line":410},[115,4039,311],{"class":175},[115,4041,755],{"class":275},[115,4043,317],{"class":179},[115,4045,4046,4048,4050,4052],{"class":117,"line":419},[115,4047,762],{"class":323},[115,4049,327],{"class":175},[115,4051,302],{"class":121},[115,4053,198],{"class":175},[115,4055,4056],{"class":117,"line":431},[115,4057,502],{"class":175},[15,4059,4060,4061,4063],{},"Above, we used the ",[58,4062,60],{}," decorator. Its argument is a function that returns the class of the entity with which\nwe wish to establish a relationship.",[15,4065,4066,4067,4069],{},"The ",[58,4068,784],{}," decorator specifies that the relationship is owned by the Profile entity. It signifies that the rows\nof the Profile table contain the userId column, which can store a user's id. We only use it on one side of the\nrelationship.",[795,4071,4073],{"id":4072},"bidirectional-relation","Bidirectional relation",[15,4075,4076],{},"Our relationship is currently unidirectional. Meaning that just one side of the relationship knows anything about\nthe other. With TypeORM, relations can be uni-directional and bidirectional. Uni-directional is relations with a\nrelation decorator only on one side. Bidirectional is relations with decorators on both sides of a relation.",[15,4078,4079],{},"We just created a uni-directional relation. Let's make it bidirectional:",[105,4081,4082],{"className":162,"code":807,"filename":517,"language":164,"meta":111,"style":111},[58,4083,4084,4104,4124,4156,4160,4176,4186,4194,4204,4208,4216,4226,4230,4250,4260,4264,4272,4282,4286,4330,4340,4344,4374,4384],{"__ignoreMap":111},[115,4085,4086,4088,4090,4092,4094,4096,4098,4100,4102],{"class":117,"line":118},[115,4087,172],{"class":171},[115,4089,176],{"class":175},[115,4091,180],{"class":179},[115,4093,183],{"class":175},[115,4095,186],{"class":171},[115,4097,189],{"class":175},[115,4099,192],{"class":125},[115,4101,195],{"class":175},[115,4103,198],{"class":175},[115,4105,4106,4108,4110,4112,4114,4116,4118,4120,4122],{"class":117,"line":135},[115,4107,172],{"class":171},[115,4109,176],{"class":175},[115,4111,207],{"class":179},[115,4113,183],{"class":175},[115,4115,186],{"class":171},[115,4117,189],{"class":175},[115,4119,216],{"class":125},[115,4121,195],{"class":175},[115,4123,198],{"class":175},[115,4125,4126,4128,4130,4132,4134,4136,4138,4140,4142,4144,4146,4148,4150,4152,4154],{"class":117,"line":223},[115,4127,172],{"class":171},[115,4129,176],{"class":175},[115,4131,230],{"class":179},[115,4133,233],{"class":175},[115,4135,236],{"class":179},[115,4137,233],{"class":175},[115,4139,241],{"class":179},[115,4141,233],{"class":175},[115,4143,246],{"class":179},[115,4145,183],{"class":175},[115,4147,186],{"class":171},[115,4149,189],{"class":175},[115,4151,255],{"class":125},[115,4153,195],{"class":175},[115,4155,198],{"class":175},[115,4157,4158],{"class":117,"line":262},[115,4159,266],{"emptyLinePlaceholder":265},[115,4161,4162,4164,4166,4168,4170,4172,4174],{"class":117,"line":269},[115,4163,272],{"class":175},[115,4165,276],{"class":275},[115,4167,279],{"class":179},[115,4169,195],{"class":175},[115,4171,284],{"class":125},[115,4173,195],{"class":175},[115,4175,289],{"class":179},[115,4177,4178,4180,4182,4184],{"class":117,"line":292},[115,4179,295],{"class":171},[115,4181,299],{"class":298},[115,4183,302],{"class":121},[115,4185,305],{"class":175},[115,4187,4188,4190,4192],{"class":117,"line":308},[115,4189,311],{"class":175},[115,4191,314],{"class":275},[115,4193,317],{"class":179},[115,4195,4196,4198,4200,4202],{"class":117,"line":320},[115,4197,324],{"class":323},[115,4199,327],{"class":175},[115,4201,330],{"class":121},[115,4203,198],{"class":175},[115,4205,4206],{"class":117,"line":335},[115,4207,266],{"emptyLinePlaceholder":265},[115,4209,4210,4212,4214],{"class":117,"line":340},[115,4211,311],{"class":175},[115,4213,345],{"class":275},[115,4215,317],{"class":179},[115,4217,4218,4220,4222,4224],{"class":117,"line":350},[115,4219,353],{"class":323},[115,4221,327],{"class":175},[115,4223,358],{"class":121},[115,4225,198],{"class":175},[115,4227,4228],{"class":117,"line":363},[115,4229,266],{"emptyLinePlaceholder":265},[115,4231,4232,4234,4236,4238,4240,4242,4244,4246,4248],{"class":117,"line":368},[115,4233,311],{"class":175},[115,4235,345],{"class":275},[115,4237,279],{"class":179},[115,4239,377],{"class":175},[115,4241,380],{"class":323},[115,4243,327],{"class":175},[115,4245,386],{"class":385},[115,4247,183],{"class":175},[115,4249,289],{"class":179},[115,4251,4252,4254,4256,4258],{"class":117,"line":393},[115,4253,396],{"class":323},[115,4255,327],{"class":175},[115,4257,358],{"class":121},[115,4259,198],{"class":175},[115,4261,4262],{"class":117,"line":405},[115,4263,266],{"emptyLinePlaceholder":265},[115,4265,4266,4268,4270],{"class":117,"line":410},[115,4267,311],{"class":175},[115,4269,345],{"class":275},[115,4271,317],{"class":179},[115,4273,4274,4276,4278,4280],{"class":117,"line":419},[115,4275,422],{"class":323},[115,4277,327],{"class":175},[115,4279,358],{"class":121},[115,4281,198],{"class":175},[115,4283,4284],{"class":117,"line":431},[115,4285,266],{"emptyLinePlaceholder":265},[115,4287,4288,4290,4292,4294,4296,4298,4300,4302,4304,4306,4308,4310,4312,4314,4316,4318,4320,4322,4324,4326,4328],{"class":117,"line":436},[115,4289,311],{"class":175},[115,4291,345],{"class":275},[115,4293,279],{"class":179},[115,4295,377],{"class":175},[115,4297,447],{"class":323},[115,4299,327],{"class":175},[115,4301,189],{"class":175},[115,4303,454],{"class":125},[115,4305,195],{"class":175},[115,4307,233],{"class":175},[115,4309,461],{"class":323},[115,4311,327],{"class":175},[115,4313,180],{"class":179},[115,4315,233],{"class":175},[115,4317,470],{"class":323},[115,4319,327],{"class":175},[115,4321,180],{"class":179},[115,4323,35],{"class":175},[115,4325,479],{"class":179},[115,4327,482],{"class":175},[115,4329,289],{"class":179},[115,4331,4332,4334,4336,4338],{"class":117,"line":487},[115,4333,490],{"class":323},[115,4335,327],{"class":175},[115,4337,358],{"class":121},[115,4339,198],{"class":175},[115,4341,4342],{"class":117,"line":499},[115,4343,266],{"emptyLinePlaceholder":265},[115,4345,4346,4348,4350,4352,4354,4356,4358,4360,4362,4364,4366,4368,4370,4372],{"class":117,"line":1072},[115,4347,311],{"class":175},[115,4349,712],{"class":275},[115,4351,279],{"class":179},[115,4353,717],{"class":175},[115,4355,720],{"class":298},[115,4357,207],{"class":179},[115,4359,233],{"class":175},[115,4361,727],{"class":175},[115,4363,1091],{"class":730},[115,4365,734],{"class":175},[115,4367,720],{"class":298},[115,4369,1098],{"class":179},[115,4371,35],{"class":175},[115,4373,1103],{"class":179},[115,4375,4376,4378,4380,4382],{"class":117,"line":1106},[115,4377,1109],{"class":323},[115,4379,327],{"class":175},[115,4381,207],{"class":121},[115,4383,198],{"class":175},[115,4385,4386],{"class":117,"line":1118},[115,4387,502],{"class":175},[22,4389,4390],{},[15,4391,4392],{},"It's worth noting that the inverse relationship is a somewhat abstract idea that does not add any new columns to the\ndatabase.",[15,4394,4395,4396,4398],{},"We just made our relations bidirectional. Note, inverse relation does not have a ",[58,4397,1131],{},". `@JoinColumn must only\nbe on one side of the relation - on the table that will own the foreign key",[795,4400,4402],{"id":4401},"how-to-save-and-retrieve-one-to-one-relation","How to save and retrieve one-to-one 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A user can have multiple orders, but each order is owned by only one\nsingle user.",[15,4989,4990],{},"Let's quickly set up orders REST API 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added ",[58,5393,2251],{}," to orders property and set Order as the target relation type. In a ",[58,5396,2255],{},[58,5398,2251],{},"\nrelation, you can omit ",[58,5401,1131],{},[58,5403,2255],{}," cannot exist without ",[58,5406,2251],{},[58,5408,2255],{}," is required if you\nwant to use ",[58,5411,2251],{},". However, if you only care about the ",[58,5414,2255],{}," relationship, you can define it without\nhaving ",[58,5417,2251],{}," on the associated entity. Wherever ",[58,5420,2255],{}," is configured, its linked entity will have a\n\"relation id\" and a foreign key.",[795,5423,5425],{"id":5424},"how-to-save-and-retrieve-one-to-manymany-to-one-relation","How to save and retrieve one-to-many\u002Fmany-to-one relation",[15,5427,5428],{},"Let me show the full order service that implements an order crud",[105,5430,5431],{"className":162,"code":2292,"filename":2293,"language":164,"meta":111,"style":111},[58,5432,5433,5453,5473,5493,5513,5533,5553,5573,5577,5585,5595,5601,5609,5627,5641,5647,5651,5655,5681,5707,5711,5727,5745,5759,5763,5785,5789,5793,5821,5847,5865,5877,5885,5889,5893,5923,5949,5953],{"__ignoreMap":111},[115,5434,5435,5437,5439,5441,5443,5445,5447,5449,5451],{"class":117,"line":118},[115,5436,172],{"class":171},[115,5438,176],{"class":175},[115,5440,1164],{"class":179},[115,5442,183],{"class":175},[115,5444,186],{"class":171},[115,5446,189],{"class":175},[115,5448,1173],{"class":125},[115,5450,195],{"class":175},[115,5452,198],{"class":175},[115,5454,5455,5457,5459,5461,5463,5465,5467,5469,5471],{"class":117,"line":135},[115,5456,172],{"class":171},[115,5458,176],{"class":175},[115,5460,2324],{"class":179},[115,5462,183],{"class":175},[115,5464,186],{"class":171},[115,5466,189],{"class":175},[115,5468,2333],{"class":125},[115,5470,195],{"class":175},[115,5472,198],{"class":175},[115,5474,5475,5477,5479,5481,5483,5485,5487,5489,5491],{"class":117,"line":223},[115,5476,172],{"class":171},[115,5478,176],{"class":175},[115,5480,2346],{"class":179},[115,5482,183],{"class":175},[115,5484,186],{"class":171},[115,5486,189],{"class":175},[115,5488,2355],{"class":125},[115,5490,195],{"class":175},[115,5492,198],{"class":175},[115,5494,5495,5497,5499,5501,5503,5505,5507,5509,5511],{"class":117,"line":262},[115,5496,172],{"class":171},[115,5498,176],{"class":175},[115,5500,1230],{"class":179},[115,5502,183],{"class":175},[115,5504,186],{"class":171},[115,5506,189],{"class":175},[115,5508,1239],{"class":125},[115,5510,195],{"class":175},[115,5512,198],{"class":175},[115,5514,5515,5517,5519,5521,5523,5525,5527,5529,5531],{"class":117,"line":269},[115,5516,172],{"class":171},[115,5518,176],{"class":175},[115,5520,1850],{"class":179},[115,5522,183],{"class":175},[115,5524,186],{"class":171},[115,5526,189],{"class":175},[115,5528,2396],{"class":125},[115,5530,195],{"class":175},[115,5532,198],{"class":175},[115,5534,5535,5537,5539,5541,5543,5545,5547,5549,5551],{"class":117,"line":292},[115,5536,172],{"class":171},[115,5538,176],{"class":175},[115,5540,1252],{"class":179},[115,5542,183],{"class":175},[115,5544,186],{"class":171},[115,5546,189],{"class":175},[115,5548,255],{"class":125},[115,5550,195],{"class":175},[115,5552,198],{"class":175},[115,5554,5555,5557,5559,5561,5563,5565,5567,5569,5571],{"class":117,"line":308},[115,5556,172],{"class":171},[115,5558,176],{"class":175},[115,5560,1349],{"class":179},[115,5562,183],{"class":175},[115,5564,186],{"class":171},[115,5566,189],{"class":175},[115,5568,2437],{"class":125},[115,5570,195],{"class":175},[115,5572,198],{"class":175},[115,5574,5575],{"class":117,"line":320},[115,5576,266],{"emptyLinePlaceholder":265},[115,5578,5579,5581,5583],{"class":117,"line":335},[115,5580,272],{"class":175},[115,5582,1338],{"class":275},[115,5584,317],{"class":179},[115,5586,5587,5589,5591,5593],{"class":117,"line":340},[115,5588,295],{"class":171},[115,5590,299],{"class":298},[115,5592,2462],{"class":121},[115,5594,305],{"class":175},[115,5596,5597,5599],{"class":117,"line":350},[115,5598,1356],{"class":298},[115,5600,1359],{"class":175},[115,5602,5603,5605,5607],{"class":117,"line":363},[115,5604,1364],{"class":175},[115,5606,1367],{"class":275},[115,5608,2479],{"class":179},[115,5610,5611,5613,5615,5617,5619,5621,5623,5625],{"class":117,"line":368},[115,5612,2484],{"class":298},[115,5614,2487],{"class":298},[115,5616,2490],{"class":730},[115,5618,327],{"class":175},[115,5620,1252],{"class":121},[115,5622,1383],{"class":175},[115,5624,1816],{"class":121},[115,5626,1388],{"class":175},[115,5628,5629,5631,5633,5635,5637,5639],{"class":117,"line":393},[115,5630,2484],{"class":298},[115,5632,2487],{"class":298},[115,5634,2509],{"class":730},[115,5636,327],{"class":175},[115,5638,1349],{"class":121},[115,5640,2516],{"class":175},[115,5642,5643,5645],{"class":117,"line":405},[115,5644,1417],{"class":175},[115,5646,305],{"class":175},[115,5648,5649],{"class":117,"line":410},[115,5650,1424],{"class":175},[115,5652,5653],{"class":117,"line":419},[115,5654,266],{"emptyLinePlaceholder":265},[115,5656,5657,5659,5661,5663,5665,5667,5669,5671,5673,5675,5677,5679],{"class":117,"line":431},[115,5658,1433],{"class":298},[115,5660,1436],{"class":323},[115,5662,279],{"class":175},[115,5664,788],{"class":730},[115,5666,327],{"class":175},[115,5668,330],{"class":121},[115,5670,233],{"class":175},[115,5672,2549],{"class":730},[115,5674,327],{"class":175},[115,5676,2324],{"class":121},[115,5678,734],{"class":175},[115,5680,305],{"class":175},[115,5682,5683,5685,5687,5689,5691,5693,5695,5697,5699,5701,5703,5705],{"class":117,"line":436},[115,5684,1454],{"class":298},[115,5686,739],{"class":179},[115,5688,1459],{"class":175},[115,5690,1462],{"class":171},[115,5692,1465],{"class":175},[115,5694,2572],{"class":179},[115,5696,35],{"class":175},[115,5698,1613],{"class":275},[115,5700,279],{"class":323},[115,5702,788],{"class":179},[115,5704,734],{"class":323},[115,5706,198],{"class":175},[115,5708,5709],{"class":117,"line":487},[115,5710,266],{"emptyLinePlaceholder":265},[115,5712,5713,5715,5717,5719,5721,5723,5725],{"class":117,"line":499},[115,5714,1454],{"class":298},[115,5716,1927],{"class":179},[115,5718,1459],{"class":175},[115,5720,1505],{"class":175},[115,5722,1850],{"class":275},[115,5724,717],{"class":323},[115,5726,198],{"class":175},[115,5728,5729,5731,5733,5735,5737,5739,5741,5743],{"class":117,"line":1072},[115,5730,2609],{"class":179},[115,5732,35],{"class":175},[115,5734,2614],{"class":179},[115,5736,1459],{"class":175},[115,5738,2549],{"class":179},[115,5740,35],{"class":175},[115,5742,2614],{"class":179},[115,5744,198],{"class":175},[115,5746,5747,5749,5751,5753,5755,5757],{"class":117,"line":1106},[115,5748,2609],{"class":179},[115,5750,35],{"class":175},[115,5752,731],{"class":179},[115,5754,1459],{"class":175},[115,5756,739],{"class":179},[115,5758,198],{"class":175},[115,5760,5761],{"class":117,"line":1118},[115,5762,266],{"emptyLinePlaceholder":265},[115,5764,5765,5767,5769,5771,5773,5775,5777,5779,5781,5783],{"class":117,"line":1554},[115,5766,1608],{"class":171},[115,5768,1462],{"class":171},[115,5770,1465],{"class":175},[115,5772,2653],{"class":179},[115,5774,35],{"class":175},[115,5776,1473],{"class":275},[115,5778,279],{"class":323},[115,5780,1920],{"class":179},[115,5782,734],{"class":323},[115,5784,198],{"class":175},[115,5786,5787],{"class":117,"line":1569},[115,5788,1424],{"class":175},[115,5790,5791],{"class":117,"line":1574},[115,5792,266],{"emptyLinePlaceholder":265},[115,5794,5795,5797,5799,5801,5803,5805,5807,5809,5811,5813,5815,5817,5819],{"class":117,"line":1600},[115,5796,1433],{"class":298},[115,5798,2680],{"class":323},[115,5800,279],{"class":175},[115,5802,788],{"class":730},[115,5804,327],{"class":175},[115,5806,330],{"class":121},[115,5808,2691],{"class":175},[115,5810,2694],{"class":121},[115,5812,1383],{"class":175},[115,5814,1816],{"class":121},[115,5816,1943],{"class":179},[115,5818,2703],{"class":175},[115,5820,305],{"class":175},[115,5822,5823,5825,5827,5829,5831,5833,5835,5837,5839,5841,5843,5845],{"class":117,"line":1605},[115,5824,1454],{"class":298},[115,5826,739],{"class":179},[115,5828,1459],{"class":175},[115,5830,1462],{"class":171},[115,5832,1465],{"class":175},[115,5834,2572],{"class":179},[115,5836,35],{"class":175},[115,5838,1613],{"class":275},[115,5840,279],{"class":323},[115,5842,788],{"class":179},[115,5844,734],{"class":323},[115,5846,198],{"class":175},[115,5848,5849,5851,5853,5855,5857,5859,5861,5863],{"class":117,"line":1631},[115,5850,1608],{"class":171},[115,5852,1462],{"class":171},[115,5854,1465],{"class":175},[115,5856,2653],{"class":179},[115,5858,35],{"class":175},[115,5860,2746],{"class":275},[115,5862,279],{"class":323},[115,5864,1682],{"class":175},[115,5866,5867,5869,5871,5873,5875],{"class":117,"line":1636},[115,5868,1688],{"class":323},[115,5870,327],{"class":175},[115,5872,176],{"class":175},[115,5874,739],{"class":179},[115,5876,1698],{"class":175},[115,5878,5879,5881,5883],{"class":117,"line":1641},[115,5880,1726],{"class":175},[115,5882,734],{"class":323},[115,5884,198],{"class":175},[115,5886,5887],{"class":117,"line":1661},[115,5888,1424],{"class":175},[115,5890,5891],{"class":117,"line":1685},[115,5892,266],{"emptyLinePlaceholder":265},[115,5894,5895,5897,5899,5901,5903,5905,5907,5909,5911,5913,5915,5917,5919,5921],{"class":117,"line":1701},[115,5896,1433],{"class":298},[115,5898,1646],{"class":323},[115,5900,279],{"class":175},[115,5902,792],{"class":730},[115,5904,327],{"class":175},[115,5906,330],{"class":121},[115,5908,2691],{"class":175},[115,5910,2694],{"class":121},[115,5912,1383],{"class":175},[115,5914,1816],{"class":121},[115,5916,2803],{"class":175},[115,5918,2806],{"class":121},[115,5920,2703],{"class":175},[115,5922,305],{"class":175},[115,5924,5925,5927,5929,5931,5933,5935,5937,5939,5941,5943,5945,5947],{"class":117,"line":1723},[115,5926,1608],{"class":171},[115,5928,1462],{"class":171},[115,5930,1465],{"class":175},[115,5932,2653],{"class":179},[115,5934,35],{"class":175},[115,5936,2825],{"class":275},[115,5938,279],{"class":323},[115,5940,377],{"class":175},[115,5942,1695],{"class":179},[115,5944,183],{"class":175},[115,5946,734],{"class":323},[115,5948,198],{"class":175},[115,5950,5951],{"class":117,"line":1733},[115,5952,1424],{"class":175},[115,5954,5955],{"class":117,"line":1738},[115,5956,502],{"class":175},[10,5958,5960],{"id":5959},"many-to-many-relations","Many-To-Many relations",[15,5962,5963],{},"Many-to-many is a relationship in which entity A contains multiple instances of entity B, and vice versa. For example,\nlet's consider the entities 'Product' and 'Order.' An order can include multiple products, and each product can belong\nto multiple orders.",[15,5965,5966,5967,3823],{},"Let's explore the ",[58,5968,517],{},[105,5970,5971],{"className":162,"code":2866,"filename":1953,"language":164,"meta":111,"style":111},[58,5972,5973,5993,6017,6021,6037,6047,6051,6055,6059,6073,6085],{"__ignoreMap":111},[115,5974,5975,5977,5979,5981,5983,5985,5987,5989,5991],{"class":117,"line":118},[115,5976,172],{"class":171},[115,5978,176],{"class":175},[115,5980,2877],{"class":179},[115,5982,183],{"class":175},[115,5984,186],{"class":171},[115,5986,189],{"class":175},[115,5988,2886],{"class":125},[115,5990,195],{"class":175},[115,5992,198],{"class":175},[115,5994,5995,5997,5999,6001,6003,6005,6007,6009,6011,6013,6015],{"class":117,"line":135},[115,5996,172],{"class":171},[115,5998,176],{"class":175},[115,6000,2899],{"class":179},[115,6002,233],{"class":175},[115,6004,2904],{"class":179},[115,6006,183],{"class":175},[115,6008,186],{"class":171},[115,6010,189],{"class":175},[115,6012,255],{"class":125},[115,6014,195],{"class":175},[115,6016,198],{"class":175},[115,6018,6019],{"class":117,"line":223},[115,6020,266],{"emptyLinePlaceholder":265},[115,6022,6023,6025,6027,6029,6031,6033,6035],{"class":117,"line":262},[115,6024,272],{"class":175},[115,6026,276],{"class":275},[115,6028,279],{"class":179},[115,6030,195],{"class":175},[115,6032,2052],{"class":125},[115,6034,195],{"class":175},[115,6036,289],{"class":179},[115,6038,6039,6041,6043,6045],{"class":117,"line":269},[115,6040,295],{"class":171},[115,6042,299],{"class":298},[115,6044,1850],{"class":121},[115,6046,305],{"class":175},[115,6048,6049],{"class":117,"line":292},[115,6050,2951],{"class":747},[115,6052,6053],{"class":117,"line":308},[115,6054,266],{"emptyLinePlaceholder":265},[115,6056,6057],{"class":117,"line":320},[115,6058,2960],{"class":747},[115,6060,6061,6063,6065,6067,6069,6071],{"class":117,"line":335},[115,6062,311],{"class":175},[115,6064,2967],{"class":275},[115,6066,279],{"class":179},[115,6068,717],{"class":175},[115,6070,720],{"class":298},[115,6072,2976],{"class":179},[115,6074,6075,6077,6079,6081,6083],{"class":117,"line":340},[115,6076,2981],{"class":323},[115,6078,327],{"class":175},[115,6080,2877],{"class":121},[115,6082,1943],{"class":179},[115,6084,198],{"class":175},[115,6086,6087],{"class":117,"line":350},[115,6088,502],{"class":175},[22,6090,6091],{},[15,6092,6093,6095,6096,6098,6099,6101],{},[58,6094,3000],{}," is required for ",[58,6097,3004],{}," relations. You must put ",[58,6100,3008],{}," on one (owning) side of relation.",[795,6103,6105],{"id":6104},"saving-many-to-many-relations","Saving many-to-many relations",[15,6107,6108],{},"Let's update the order service file and add some new lines to create 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Many-to-Many relations",[15,6340,6341],{},"To load orders with products inside you, must specify the relation in 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delve deeply into the world of data relationships with NestJS, TypeORM, and SQL databases in this extensive blog\npost. This lesson will help you regardless of whether you're an experienced NestJS developer trying to broaden your\nexpertise or a novice keen to learn the nuances of data connections.\nStay tuned for the upcoming post, where we'll delve into data validation and error handling, equipping you with even\nmore tools to become a NestJS expert. Join us on this exciting adventure, and let's master the art of data relationships\nin NestJS together!",[3409,6470,3411],{},{"title":111,"searchDepth":135,"depth":135,"links":6472},[6473,6474,6475,6479,6482,6486],{"id":12,"depth":135,"text":13},{"id":3470,"depth":135,"text":3471},{"id":3506,"depth":135,"text":3507,"children":6476},[6477,6478],{"id":4072,"depth":223,"text":4073},{"id":4401,"depth":223,"text":4402},{"id":4983,"depth":135,"text":4984,"children":6480},[6481],{"id":5424,"depth":223,"text":5425},{"id":5959,"depth":135,"text":5960,"children":6483},[6484,6485],{"id":6104,"depth":223,"text":6105},{"id":6337,"depth":223,"text":6338},{"id":6464,"depth":135,"text":6465},"Unlock the Power of Data Relationships with NestJS, TypeORM, and SQL Databases. Master the art of building complex data structures and seamless interactions. 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Examine le rôle des services, modules et contrôleurs en exploitant les capacités des DTO (Data Transfer Objects) pour la validation et le renforcement de la sécurité.","2023-09-03",[3438,3439,3440],[3442,3443],{"path":6516,"title":6517,"description":6518,"date":6519,"tags":6520,"topics":6521},"\u002Fbackend\u002Fnest-js\u002Fintroducing-nest-js.fr","Maîtriser NestJS : ton guide ultime du développement backend moderne","Explore NestJS, un framework Node.js moderne, dans cette introduction complète. Rejoins notre série pour maîtriser l'architecture modulaire, les contrôleurs, providers, services, et plus encore. Construis des applications backend scalables en toute confiance. Bienvenue dans la partie 1 de la série NestJS !","2023-08-23",[3438,3439,3440],[3442,3443],1780074487565]