[Nest JS] 회원가입 구현 / TypeError: this.userRepository.createUser is not a function 해결

* dto 생성

export class AuthCredentialsDto{
  username : string;
  password : string;
}

* 리포지토리에서 db 접근 메소드 구현

@Injectable()
export class UserRepository extends Repository<User>{
  constructor(dataSource: DataSource) {
    super(User, dataSource.createEntityManager());
  }

  async createUser(authCredentialsDto : AuthCredentialsDto){
    const {username, password} = authCredentialsDto;
    const user = this.create({username,password}); //리포지토리.create => db저장용객체로 만들어줌
    await this.save(user);
  }
}

* 서비스에서 사용

async signUp(autoCredentialsDto : AuthCredentialsDto){
  return this.userRepository.createUser(autoCredentialsDto);
}

* 컨트롤러

컨트롤러는 서비스에만 의존해야함에 주의.

import { Body, Controller, Post } from "@nestjs/common";
import { AuthService } from "./auth.service";
import { AuthCredentialsDto } from "./dto/auth-credentials.dto";

@Controller('auth')
export class AuthController {
  constructor(private authService: AuthService) {} //서비스만 사용해야함에 주의
  
  @Post('/singup')
  signUp(@Body() authcredentialsDto : AuthCredentialsDto){
    return this.authService.signUp(authcredentialsDto);
  }
}

 

결과

 

* TypeError: this.userRepository.createUser is not a function 해결

모듈 > providers에 UserRepository 추가 해주면 됨.

@Module({
  imports:[
    TypeOrmModule.forFeature([UserRepository])
  ],
  controllers: [AuthController],
  providers: [AuthService, UserRepository]
})
export class AuthModule {}

 

추가확인사항

@Injectable()
export class UserRepository extends Repository<User>{
  constructor(dataSource: DataSource) {
    super(User, dataSource.createEntityManager());
  }

 

export class AuthService {
  constructor(
    @InjectRepository(UserRepository) //변수에 의존성 주입해줘
    private userRepository: UserRepository) {
  }