Date and Json in type definition for graphql

Question

Is it possible to have a define a field as Date or JSON in my graphql schema ?

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

actually the server is returning me an error saying :

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

And same error for JSON...

Any idea ?

Answer 1

Have a look at custom scalars: https://www.apollographql.com/docs/graphql-tools/scalars.html

create a new scalar in your schema:

scalar Date  type MyType {    created: Date } 

and create a new resolver:

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;     },   }),