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在TypeORM中,向实体添加列时,`SQLITE\u CONSTRAINT:FOREIGN KEY CONSTRAINT failed`

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Gary · 技术社区 · 6 年前

我有一个类型实体,叫做 Photo @OneToOne 与另一个实体的关系,称为 PhotoMetadata .

Photo.ts

import {
  Entity,
  Column,
  PrimaryGeneratedColumn,
  OneToOne,
  BaseEntity,
} from 'typeorm';

import PhotoMetadata from './PhotoMetadata';

@Entity()
export default class Photo extends BaseEntity {
  @PrimaryGeneratedColumn()
  public id: number;

  @Column({ length: 100 })
  public name: string;

  @OneToOne(
    () => PhotoMetadata,
    (photoMetadata) => photoMetadata.photo,
    { cascade: true },
  )
  metadata: PhotoMetadata;
}

这里是 PhotoMetadata.ts :

import {
  Entity,
  Column,
  PrimaryGeneratedColumn,
  OneToOne,
  JoinColumn,
} from 'typeorm';

import Photo from './Photo';

@Entity()
export default class PhotoMetadata {
  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  comment: string;

  @OneToOne(
    () => Photo,
    (photo) => photo.metadata,
  )
  @JoinColumn()
  photo: Photo;
}

当我将列添加到 ,例如:

  @Column({ nullable: true })
  test: string;

query: BEGIN TRANSACTION
query: SELECT * FROM "sqlite_master" WHERE "type" = 'table' AND "name" IN ('photo_metadata', 'photo', 'user')
query: SELECT * FROM "sqlite_master" WHERE "type" = 'index' AND "tbl_name" IN ('photo_metadata', 'photo', 'user')
query: PRAGMA table_info("user")
query: PRAGMA index_list("user")
query: PRAGMA foreign_key_list("user")
query: PRAGMA table_info("photo")
query: PRAGMA index_list("photo")
query: PRAGMA foreign_key_list("photo")
query: PRAGMA table_info("photo_metadata")
query: PRAGMA index_list("photo_metadata")
query: PRAGMA foreign_key_list("photo_metadata")
query: PRAGMA index_info("sqlite_autoindex_photo_metadata_1")
query: SELECT * FROM "sqlite_master" WHERE "type" = 'table' AND "name" = 'typeorm_metadata'
query: CREATE TABLE "temporary_photo_metadata" ("id" integer PRIMARY KEY AUTOINCREMENT NOT NULL, "comment" varchar NOT NULL, "photoId" integer, CONSTRAINT "UQ_99f01ed52303cc16139d69f7464" UNIQUE ("photoId"), CONSTRAINT "FK_99f01ed52303cc16139d69f7464" FOREIGN KEY ("photoId") REFERENCES "photo" ("id") ON DELETE NO ACTION ON UPDATE NO ACTION)
query: INSERT INTO "temporary_photo_metadata"("id", "comment", "photoId") SELECT "id", "comment", "photoId" FROM "photo_metadata"
query: DROP TABLE "photo_metadata"
query: ALTER TABLE "temporary_photo_metadata" RENAME TO "photo_metadata"
query: CREATE TABLE "temporary_photo" ("id" integer PRIMARY KEY AUTOINCREMENT NOT NULL, "name" varchar(100) NOT NULL)
query: INSERT INTO "temporary_photo"("id", "name") SELECT "id", "name" FROM "photo"
query: DROP TABLE "photo"
query failed: DROP TABLE "photo"
error: [Error: SQLITE_CONSTRAINT: FOREIGN KEY constraint failed] {
  errno: 19,
  code: 'SQLITE_CONSTRAINT'
}
query: ROLLBACK

如何解决此问题?由于外键的原因,删除我修改的照片表似乎失败了。

0 回复 | 直到 6 年前

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Gary 6 年前

我尝试使用TypeORM迁移来实现这一点,但遇到了相同的问题。

this comment

const connection = await createConnection();

await connection.query('PRAGMA foreign_keys=OFF');
await connection.synchronize();
await connection.query('PRAGMA foreign_keys=ON');

或者如果您想使用迁移,那么从 this comment

await connection.query("PRAGMA foreign_keys=OFF;");
await connection.runMigrations();
await connection.query("PRAGMA foreign_keys=ON;");

无论哪种情况,你都需要 synchronize: false 在你的 ormconfig.json .