[Nest] Cannot determine a GraphQL output type for the "...". Make sure your class is decorated with an appropriate decorator.

• Cannot determine a GraphQL output type for the "...". Make sure your class is decorated with an appropriate decorator.
  • GraphQL 에서 Return Type을 통일시켜주기 위해 Output Dto 를 만들었으나, 해당 Output 을 적용하려고 하니 생긴 오류
  • Output 에도 데코레이터를 적용시켜줘야함.
    • GraphQL 에게 타입을 알려주는 Field 도 깜빡하지 말고 넣자.

  import { ObjectType } from '@nestjs/graphql';
  import { CommonOutput } from 'src/common/dtos/output.dto';
  import { Podcast } from '../entities/podcast.entity';
  
  export class PodcastsOutput extends CommonOutput {
    podcasts?: Podcast[];
  }
  export class PodcastOutput extends CommonOutput {
    podcast?: Podcast;
  }
  
  ->
  
  @ObjectType()
  export class PodcastsOutput extends CommonOutput {
    @Field((type) => [Podcast], { nullable: true })
    podcasts?: Podcast[];
  }
  @ObjectType()
  export class PodcastOutput extends CommonOutput {
    @Field((type) => Podcast, { nullable: true })
    podcast?: Podcast;
  }

Uploaded by Notion2Tistory v1.1.0