feat: typeorm one-to-one

Author: QuarkGluonPlasma

README.md

@@ -43,3 +43,7 @@
 [通过 typeorm 操作 mysql](./typeorm-mysql-test)
 
 [typeorm 全部特性](./typeorm-all-feature)
+
+[typeorm 一对一映射](./typeorm-relation-mapping)
+
+

typeorm-relation-mapping/.gitignore

@@ -0,0 +1,6 @@
+.idea/
+.vscode/
+node_modules/
+build/
+tmp/
+temp/

typeorm-relation-mapping/README.md

@@ -0,0 +1,7 @@
+#typeorm relation mapping
+
+npm  install
+
+修改数据库连接信息
+
+npm run start

typeorm-relation-mapping/package.json

@@ -0,0 +1,21 @@
+{
+   "name": "typeorm-relation-mapping",
+   "version": "0.0.1",
+   "description": "Awesome project developed with TypeORM.",
+   "type": "commonjs",
+   "devDependencies": {
+      "@types/node": "^16.11.10",
+      "ts-node": "10.7.0",
+      "typescript": "4.5.2"
+   },
+   "dependencies": {
+      "mysql": "^2.14.1",
+      "mysql2": "^3.3.3",
+      "reflect-metadata": "^0.1.13",
+      "typeorm": "0.3.16"
+   },
+   "scripts": {
+      "start": "ts-node src/index.ts",
+      "typeorm": "typeorm-ts-node-commonjs"
+   }
+}

typeorm-relation-mapping/src/data-source.ts

@@ -0,0 +1,23 @@
+import "reflect-metadata"
+import { DataSource } from "typeorm"
+import { IdCard } from "./entity/IdCard"
+import { User } from "./entity/User"
+
+export const AppDataSource = new DataSource({
+    type: "mysql",
+    host: "localhost",
+    port: 3306,
+    username: "root",
+    password: "guang",
+    database: "typeorm_test",
+    synchronize: true,
+    logging: true,
+    entities: [User, IdCard],
+    migrations: [],
+    subscribers: [],
+    poolSize: 10,
+    connectorPackage: 'mysql2',
+    extra: {
+        authPlugin: 'sha256_password',
+    }
+})

typeorm-relation-mapping/src/entity/IdCard.ts

@@ -0,0 +1,24 @@
+import { Column, Entity, JoinColumn, OneToOne, PrimaryGeneratedColumn } from "typeorm"
+import { User } from "./User"
+
+@Entity({
+    name: 'id_card'
+})
+export class IdCard {
+    @PrimaryGeneratedColumn()
+    id: number
+
+    @Column({
+        length: 50,
+        comment: '身份证号'
+    })
+    cardName: string
+
+    @JoinColumn()
+    @OneToOne(() => User, {
+        cascade: true,
+        onDelete: 'CASCADE',
+        onUpdate: 'CASCADE'
+    })
+    user: User
+}

typeorm-relation-mapping/src/entity/User.ts

@@ -0,0 +1,21 @@
+import { Entity, PrimaryGeneratedColumn, Column, OneToOne, JoinColumn, BaseEntity } from "typeorm"
+import { IdCard } from "./IdCard"
+
+@Entity()
+export class User{
+
+    @PrimaryGeneratedColumn()
+    id: number
+
+    @Column()
+    firstName: string
+
+    @Column()
+    lastName: string
+
+    @Column()
+    age: number
+
+    @OneToOne(() => IdCard, (idCard) => idCard.user)
+    idCard: IdCard
+}

typeorm-relation-mapping/src/index.ts

@@ -0,0 +1,90 @@
+import { AppDataSource } from "./data-source"
+import { IdCard } from "./entity/IdCard"
+import { User } from "./entity/User"
+
+AppDataSource.initialize().then(async () => {
+
+    // const user = new User();
+    // user.firstName = 'guang';
+    // user.lastName = 'guang';
+    // user.age = 20;
+    
+    // const idCard = new IdCard();
+    // idCard.cardName = '1111111';
+    // idCard.user = user;
+    
+    // await AppDataSource.manager.save(user);
+    // await AppDataSource.manager.save(idCard);
+
+
+
+    // const ics = await AppDataSource.manager.find(IdCard, {});
+    // console.log(ics);
+
+
+
+
+    // const ics = await AppDataSource.manager.find(IdCard, {
+    //     relations: {
+    //         user: true
+    //     }
+    // });
+    // console.log(ics);
+
+
+
+
+    // const ics = await AppDataSource.manager.getRepository(IdCard)
+    //     .createQueryBuilder("ic")
+    //     .leftJoinAndSelect("ic.user", "u")
+    //     .getMany();
+
+    // console.log(ics);
+
+
+
+    // const ics = await AppDataSource.manager.createQueryBuilder(IdCard, "ic")
+    //     .leftJoinAndSelect("ic.user", "u")
+    //     .getMany();
+    // console.log(ics);
+
+
+
+    // const user = new User();
+    // user.id = 1;
+    // user.firstName = 'guang1111';
+    // user.lastName = 'guang1111';
+    // user.age = 20;
+    
+    // const idCard = new IdCard();
+    // idCard.id = 1;
+    // idCard.cardName = '22222';
+    // idCard.user = user;
+    
+    // await AppDataSource.manager.save(idCard);
+
+
+
+    // await AppDataSource.manager.delete(User, 1)
+
+    
+    // const idCard = await AppDataSource.manager.findOne(IdCard, {
+    //     where: {
+    //         id: 1
+    //     },
+    //     relations: {
+    //         user: true
+    //     }
+    // })
+    // await AppDataSource.manager.delete(User, idCard.user.id)
+    // await AppDataSource.manager.delete(IdCard, idCard.id)
+
+
+    const user = await AppDataSource.manager.find(User, {
+        relations: {
+            idCard: true
+        }
+    });
+    console.log(user);
+
+}).catch(error => console.log(error))

typeorm-relation-mapping/tsconfig.json

@@ -0,0 +1,15 @@
+{
+   "compilerOptions": {
+      "lib": [
+         "es5",
+         "es6"
+      ],
+      "target": "es5",
+      "module": "commonjs",
+      "moduleResolution": "node",
+      "outDir": "./build",
+      "emitDecoratorMetadata": true,
+      "experimentalDecorators": true,
+      "sourceMap": true
+   }
+}