[TypeORM] Entity metadata for Show#dates was not found

문제

Show라는 엔티티를 app.module.ts에 추가하고 서버를 구동시켰을 때 에러가 발생했다.

ERROR [TypeOrmModule] Unable to connect to the database. Retrying (2)...
TypeORMError: Entity metadata for Show#dates was not found. Check if you specified a correct entity object and if it's connected in the connection options.

 

이 에러는... Show 엔티티에 대해 정의된 dates 관계가 데이터베이스 연결에서 인식되지 않았다는 것을 나타낸다고 함...

 

원인

// app.module.ts
...

import { AuthModule } from './auth/auth.module';
import { User } from './user/entities/user.entity';
import { UserModule } from './user/user.module';
import { Show } from './show/entities/show.entity';
import { ShowModule } from './show/show.module';

const typeOrmModuleOptions = {
  useFactory: async (
    configService: ConfigService,
  ): Promise<TypeOrmModuleOptions> => ({
    namingStrategy: new SnakeNamingStrategy(),
    type: 'mysql',
    username: configService.get('DB_USERNAME'),
    password: configService.get('DB_PASSWORD'),
    host: configService.get('DB_HOST'),
    port: configService.get('DB_PORT'),
    database: configService.get('DB_NAME'),
    entities: [User, Show], 
    synchronize: configService.get('DB_SYNC'),
    logging: true,
  }),
  inject: [ConfigService],
};

...

 

Show entity만 선언해주고 같은 파일 안에 있는 다른 entity들은 선언해주지 않아서 에러가 발생한 것...ㅠ

그래서 dates 관계에 대한 인식이 되지 않았다.

 

해결

// app.module.ts
...

import { AuthModule } from './auth/auth.module';
import { User } from './user/entities/user.entity';
import { UserModule } from './user/user.module';
import { Show, ShowDate, Seat } from './show/entities/show.entity';
import { ShowModule } from './show/show.module';

const typeOrmModuleOptions = {
  useFactory: async (
    configService: ConfigService,
  ): Promise<TypeOrmModuleOptions> => ({
    namingStrategy: new SnakeNamingStrategy(),
    type: 'mysql',
    username: configService.get('DB_USERNAME'),
    password: configService.get('DB_PASSWORD'),
    host: configService.get('DB_HOST'),
    port: configService.get('DB_PORT'),
    database: configService.get('DB_NAME'),
    entities: [User, Show, ShowDate, Seat], 
    synchronize: configService.get('DB_SYNC'),
    logging: true,
  }),
  inject: [ConfigService],
};

...

 

이렇게 연관된 모든 엔티티를 불러와주니 문제 없이 잘 돌아감