如何在類型定義中為 GraphQL 字段定義數組數據類型

Question

我正在開發一個 Nodejs 應用程序，我正在嘗試為 graphQL 定義下面的類型，但我無法弄清楚如何使用 Javascript 數組類型定義字段。

const graphql = require('graphql');
const {
  GraphQLObjectType,
  GraphQLString,
  GraphQLID
 } = graphql;
 const { Question } = require('../../../../models');

const QuestionChoiceType = new GraphQLObjectType({
  name: 'QuestionChoiceType',
  fields: () => ({
    id: { type: GraphQLID },
    correctChoice: { type: GraphQLString },
    choices: [{ type: GraphQLString }]
  })
});

module.exports = QuestionChoiceType;

Answer 1

使用GraphQLList定義列表/數組：

const QuestionChoiceType = new GraphQLObjectType({
  name: 'QuestionChoiceType',
  fields: () => ({
    id: { type: GraphQLID },
    correctChoice: { type: GraphQLString },
    choices: { type: new GraphQLList(GraphQLString)}
  })
});