graphql - graphql 类型定义中的日期和 Json

Question

是否可以在我的 graphql 模式中将字段定义为日期或 JSON？

type Individual {
    id: Int
    name: String
    birthDate: Date
    token: JSON
}

实际上，服务器正在向我返回一条错误消息:

Type "Date" not found in document.
at ASTDefinitionBuilder._resolveType (****node_modules\graphql\utilities\buildASTSchema.js:134:11)

JSON 也有同样的错误...

任何的想法 ？

Answer 1

看看自定义标量:https://www.apollographql.com/docs/graphql-tools/scalars.html

在您的架构中创建一个新标量:

scalar Date

type MyType {
   created: Date
}

并创建一个新的解析器:

import { GraphQLScalarType } from 'graphql';
import { Kind } from 'graphql/language';

const resolverMap = {
  Date: new GraphQLScalarType({
    name: 'Date',
    description: 'Date custom scalar type',
    parseValue(value) {
      return new Date(value); // value from the client
    },
    serialize(value) {
      return value.getTime(); // value sent to the client
    },
    parseLiteral(ast) {
      if (ast.kind === Kind.INT) {
        return parseInt(ast.value, 10); // ast value is always in string format
      }
      return null;
    },
  }),