When attempting to resolve a field called blocks using the @ResolveField() decorator, I encounter an error.
page.resolver.ts
import {
Resolver,
Query,
Mutation,
Args,
ResolveField,
Parent,
} from '@nestjs/graphql';
import { PageService } from './page.service';
import { PageType } from './type/page.type';
import { CreatePageInput } from './input/create-page.input';
import { BlockService } from '../block/block.service';
import { Page } from './page.interface';
@Resolver('Page')
export class PageResolver {
constructor(
private readonly pageService: PageService,
private readonly blockService: BlockService,
) {}
@Query(() => [PageType])
pages() {
return this.pageService.getAllPages();
}
@Query(() => [PageType])
async page(@Args('id') id: string) {
return this.pageService.getPage(id);
}
@Mutation(() => PageType)
createPage(@Args('createPageInput') createPageInput: CreatePageInput) {
return this.pageService.createPage(createPageInput);
}
@ResolveField()
blocks(@Parent() page: Page) {
return this.blockService.getManyBlocks(page.blockIds);
}
}
page.interface.ts
import { Document } from 'mongoose';
export interface Page extends Document {
readonly id: string;
readonly name: string;
readonly createdAt: Date;
readonly updatedAt: Date;
readonly createdBy: string;
readonly updatedBy: string;
readonly blockIds: string[];
}