I am experimenting with NestJS
and TypeGraphQL
. And I have an example model of a cat.
import { Document } from 'mongoose';
import { ObjectType, InputType, Field, ID } from 'type-graphql';
export interface Cat extends Document {
readonly name: string;
readonly age?: number;
}
class CatBase {
@Field()
name: string;
@Field({ nullable: true })
age?: number;
}
@ObjectType()
export class CatObjectType extends CatBase implements Cat {
@Field(type => ID)
id: string;
}
@InputType()
export class CatInputType extends CatBase implements Cat {
}
Here I am trying to reuse BaseCat
in CatObjectType
and CatInputType
. But I getting this error:
[ { GraphQLError: Input Object type CatInputType must define one or more fields.
at SchemaValidationContext.reportError (/Users/pavel/Dev/exampleproject/node_modules/graphql/type/validate.js:90:19)
at validateInputFields (/Users/pavel/Dev/exampleproject/node_modules/graphql/type/validate.js:432:13)
at validateTypes (/Users/pavel/Dev/exampleproject/node_modules/graphql/type/validate.js:240:7)
at validateSchema (/Users/pavel/Dev/exampleproject/node_modules/graphql/type/validate.js:54:3)
at graphqlImpl (/Users/pavel/Dev/exampleproject/node_modules/graphql/graphql.js:79:62)
at /Users/pavel/Dev/exampleproject/node_modules/graphql/graphql.js:28:59
at new Promise (<anonymous>)
at Object.graphql (/Users/pavel/Dev/exampleproject/node_modules/graphql/graphql.js:26:10)
at Function.<anonymous> (/Users/pavel/Dev/exampleproject/node_modules/type-graphql/dist/schema/schema-generator.js:18:52)
at Generator.next (<anonymous>)
at /Users/pavel/Dev/exampleproject/node_modules/tslib/tslib.js:110:75
at new Promise (<anonymous>)
at Object.__awaiter (/Users/pavel/Dev/exampleproject/node_modules/tslib/tslib.js:106:16)
at Function.generateFromMetadata (/Users/pavel/Dev/exampleproject/node_modules/type-graphql/dist/schema/schema-generator.js:15:24)
at /Users/pavel/Dev/exampleproject/node_modules/type-graphql/dist/utils/buildSchema.js:11:65
at Generator.next (<anonymous>)
message:
'Input Object type CatInputType must define one or more fields.' } ]
(node:72485) UnhandledPromiseRejectionWarning: Error: Generating schema error
at Function.<anonymous> (/Users/pavel/Dev/exampleproject/node_modules/type-graphql/dist/schema/schema-generator.js:20:27)
at Generator.next (<anonymous>)
at fulfilled (/Users/pavel/Dev/exampleproject/node_modules/tslib/tslib.js:107:62)
at processTicksAndRejections (internal/process/next_tick.js:81:5)
(node:72485) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:72485) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
When in CatInputType
are described all fields from BaseCat
all work as expected. What I am doing wrong?