How to fix Error: Type "Extra" was defined more than once in apollo-server, using graphql

Question

问题

嗨开发者，

我定义了两个在技术上具有相同类型的模式，但我收到以下错误：

Error: Type "Extra" was defined more than once.

有没有办法解决这个问题？

抱歉，apollo 对我来说是个新手，非常感谢您帮助我解决这个问题。提前致谢！

架构 #1

const {gql} = require('apollo-server');


typeDefs = gql `
  extend type Query{
    search(q: String!): [Content!]!
  }

  type Content{
    id: String!
    title: String!
    sinopsis: String!
    poster: String!
    rating: String!
    year: String!
    extra: [Extra!]! 
  }

  type Extra{ 
    channel: String!
    first_air_date: String!
    last_air_date: String!
    total_seasons: String!
    total_episodes: String
    season_list: [SeasonList!]! 
    cast_members: CastMembers!
    similar_series: [SimilarSeries!]!
  }

  type SeasonList{ 
    season: Int 
    episodes: [String]
  }

  type SimilarSeries{ 
    id: String!
    poster: String!
  }

  type CastMembers{ 
    creator: Creator!
    members_list: [MembersList!]!
  }

  type MembersList{ 
    members_info: [MembersInfo!]!
  }

  type MembersInfo{
    characters: Characters!
  }

  type Characters{
    real_name: String!
    character: String!
  }

  type Creator{
    name: String! 
    poster: String!
  }
`

const resolvers ={
  Query:{
    search: async(_source , {q} , { dataSources}) =>{
      return dataSources.API.search(q)
        .then(doc =>{
          return doc.content
        });
    }
  }
}

module.exports ={
  typeDefs,
  resolvers
}

架构 #2

const {gql} = require('apollo-server');

const typeDefs = gql `
  extend type Query{
    series(page: Int!): [Series!]!
  }

  type Series{ 
    id: String!
    title: String!
    sinopsis: String!
    poster: String!
    rating: String!
    year: String!
    extra: [Extra!]! 
  }

  type Extra{ 
    channel: String!
    first_air_date: String!
    last_air_date: String!
    total_seasons: String!
    total_episodes: String
    season_list: [SeasonList!]! 
    cast_members: CastMembers!
    similar_series: [SimilarSeries!]!
  }

  type SeasonList{ 
    season: Int 
    episodes: [String]
  }

  type SimilarSeries{ 
    id: String!
    poster: String!
  }

  type CastMembers{ 
    creator: Creator!
    members_list: [MembersList!]!
  }

  type MembersList{ 
    members_info: [MembersInfo!]!
  }

  type MembersInfo{
    characters: Characters!
  }

  type Characters{
    real_name: String!
    character: String!
  }

  type Creator{
    name: String! 
    poster: String!
  }
`;

const resolvers ={
  Query:{
    series: async(_source , {page} , { dataSources }) =>{
      return dataSources.API.getAllSeries(page)
        .then(doc =>{
          return doc.series
        });
    }
  }
}

module.exports = {
  typeDefs,
  resolvers
}

问题错误

[nodemon] restarting due to changes...
[nodemon] starting `node index.js`
C:\Users\c\Desktop\cinemanight-graphql\node_modules\apollo-server-core\dist\ApolloServer.js:234
                throw new Error(errors.map(error => error.message).join('\n\n'));
                ^

Error: Type "Extra" was defined more than once.

Type "SeasonList" was defined more than once.

Type "SimilarSeries" was defined more than once.

Type "CastMembers" was defined more than once.

Type "MembersList" was defined more than once.

Type "MembersInfo" was defined more than once.

Type "Characters" was defined more than once.

Type "Creator" was defined more than once.
    at ApolloServer.initSchema (C:\Users\c\Desktop\cinemanight-graphql\node_modules\apollo-server-core\dist\ApolloServer.js:234:23)     
    at new ApolloServerBase (C:\Users\c\Desktop\cinemanight-graphql\node_modules\apollo-server-core\dist\ApolloServer.js:202:30)        
    at new ApolloServer (C:\Users\c\Desktop\cinemanight-graphql\node_modules\apollo-server-express\dist\ApolloServer.js:59:9)
    at new ApolloServer (C:\Users\c\Desktop\cinemanight-graphql\node_modules\apollo-server\dist\index.js:24:9)
    at Object.<anonymous> (C:\Users\c\Desktop\cinemanight-graphql\index.js:4:16)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)

Answer 1

解决方案

使用接口的概念和在同一文件中定义类型更正了问题。


const resolvers = require('./resolvers.js');
const {gql} = require('apollo-server');

const typeDefs = gql `
  extend type Query{
    series(page: Int!): [Series!]!
    movies(page: Int!): [Movies!]!
  }

  interface MainContent{
    id: String!
    title: String!
    sinopsis: String!
    poster: String!
    rating: String!
    year: String!
  }

  type Series implements MainContent {
    id: String!
    title: String!
    sinopsis: String!
    poster: String!
    rating: String!
    year: String!
    extra: [SerieExtra!]!
  }

  type Movies implements MainContent{
     id: String!
    title: String!
    sinopsis: String!
    poster: String!
    rating: String!
    year: String!
    extra: [MovieExtra!]!
  }

  type SerieExtra {
    channel: String!
    first_air_date: String!
    last_air_date: String!
    total_seasons: String!
    total_episodes: String
    season_list: [SeasonList!] !
    cast_members: CastMembers!
    similar_series: [SimilarSeries!] !
  }

  type MovieExtra {
    air_date: String!
    country: String!
    runtime: String!
    rated: String!
    cast_members: CastMembers!
    similar_movies: [SimilarMovies!] !
  }

  type SeasonList {
    season: Int
    episodes: [String]
  }

  type SimilarSeries {
    id: String!
    poster: String!
  }

  type SimilarMovies {
    id: String!
    poster: String!
  }

  type CastMembers {
    creator: Creator!
    members_list: [MembersList!] !
  }

  type MembersList {
    members_info: [MembersInfo!] !
  }

  type MembersInfo {
    characters: Characters!
  }

  type Characters {
    real_name: String!
      character: String!
  }

  type Creator {
    name: String!
    poster: String!
  }
`;


module.exports = {
  typeDefs,
  resolvers
}

How to fix Error: Type "Extra" was defined more than once in apollo-server, using graphql

How to fix Error: Type "Extra" was defined more than once in apollo-server, using graphql

javascript

apollo

graphql

apollo-server