错误:使用Nestjs+GraphQL+Typeorm时，无法确定GraphQL输入类型

我使用的是Nestjs、Graphql和Typeorm，而且我是新手。我目前在这个问题上很差劲。我正在使用@ManyToOne关系将食物和用户联系起来。但是我总是收到一个错误，说我的课不正确？但我进口了它https://docs.nestjs.com/techniques/database#relations似乎所有的语法都是正确的。

看看ManyToOne下的food.entity，我的名字是usertest(用于测试目的(

在食品中。entity.ts

import { ObjectType, Field, ID } from '@nestjs/graphql';
import { Entity, DeepPartial, Column, PrimaryGeneratedColumn, ManyToOne } from 'typeorm';
import { AbstractEntity } from '@shared/entities/abstract.entity';
import { User } from '../user/user.entity';
@ObjectType('Food')
@Entity('foods')
export class Food extends AbstractEntity {
constructor(input?: DeepPartial<Food>) {
super(input);
}
@Field((type) => ID)
@PrimaryGeneratedColumn()
id: number;
@Field({ nullable: false })
@Column({ type: 'varchar', length: 255, nullable: false })
name: string;
@ManyToOne(() => User, (user) => user.id)
usertest: User;
}

在user.entity.ts 中

@ObjectType('User')
@Entity('users')
export class User extends AbstractEntity {
constructor(input?: DeepPartial<User>) {
super(input);
}
@Field((type) => ID)
@PrimaryGeneratedColumn('uuid')
id: string;
@Field({ nullable: true })
@Column({ unique: true })
email: string;
@Field({ nullable: true })
@Column({ unique: true })
phoneNumber: string;
@Field({ nullable: true })
@Column({ default: false })
verified: boolean;
@Field({ nullable: true })
@Column({ default: false })
suspended: boolean;
@Field({ nullable: true })
@Column({ length: 255, nullable: true })
name?: string;
@Field({ nullable: true })
@Column({ length: 120, nullable: true })
firstName?: string;
@Field({ nullable: true })
@Column({ length: 120, nullable: true })
lastName?: string;
@Field((type) => UserRole, { nullable: true })
@Column({ type: 'enum', enum: UserRole })
role: UserRole;
@Column()
password: string;
}

我收到的错误：

(node:58449) UnhandledPromiseRejectionWarning: Error: Cannot determine a GraphQL input type for the "usertest". Make sure your class is decorated with an appropriate decorator.
at InputTypeFactory.create (/Users/ivan/Documents/Programming/Baker/api-core/node_modules/@nestjs/graphql/dist/schema-builder/factories/input-type.factory.js:19:23)
at /Users/ivan/Documents/Programming/Baker/api-core/node_modules/@nestjs/graphql/dist/schema-builder/factories/input-type-definition.factory.js:44:52
at Array.forEach (<anonymous>)
at /Users/ivan/Documents/Programming/Baker/api-core/node_modules/@nestjs/graphql/dist/schema-builder/factories/input-type-definition.factory.js:42:33
at resolveThunk (/Users/ivan/Documents/Programming/Baker/api-core/node_modules/graphql/type/definition.js:478:40)
at defineInputFieldMap (/Users/ivan/Documents/Programming/Baker/api-core/node_modules/graphql/type/definition.js:1203:18)
at GraphQLInputObjectType.getFields (/Users/ivan/Documents/Programming/Baker/api-core/node_modules/graphql/type/definition.js:1151:27)
at TypeFieldsAccessor.extractFromInputType (/Users/ivan/Documents/Programming/Baker/api-core/node_modules/@nestjs/graphql/dist/schema-builder/services/type-fields.accessor.js:9:35)
at /Users/ivan/Documents/Programming/Baker/api-core/node_modules/@nestjs/graphql/dist/schema-builder/factories/input-type-definition.factory.js:56:66
at resolveThunk (/Users/ivan/Documents/Programming/Baker/api-core/node_modules/graphql/type/definition.js:478:40)