问题描述
我有两个关联的模型:
1.- RoleEntity
1.- RoleEntity
import { Column, Entity, BaseEntity, OneToMany, PrimaryColumn } from "typeorm";
import { Field, ObjectType } from "type-graphql";
import { UserEntity } from "./user.entity";
@ObjectType()
@Entity({
name: "tb_roles"
})
export class RoleEntity extends BaseEntity {
@Field()
@PrimaryColumn({
name: "id",
type: "character varying",
length: 5
})
id!: string;
@Field()
@Column({
name: "description",
type: "character varying",
nullable: true
})
description!: string
@Field(() => [UserEntity])
@OneToMany(() => UserEntity, user => user.role)
users!: UserEntity[];
}
2.- UserEntity
2.- UserEntity
import {Field, ObjectType} from "type-graphql";
import { BaseEntity, Column, CreateDateColumn, Entity, JoinColumn, ManyToOne, PrimaryGeneratedColumn, UpdateDateColumn } from "typeorm";
import { RoleEntity } from "./role.entity";
@ObjectType()
@Entity({
name: "tb_users"
})
export class UserEntity extends BaseEntity {
@Field()
@PrimaryGeneratedColumn("uuid", {
name: "id"
})
id!: string;
@Field()
@Column({
name: "username",
type: "character varying",
unique: true,
nullable: false
})
username!: string;
@Field()
@Column({
name: "last_name",
type: "character varying",
nullable: false
})
lastName!: string;
@Field()
@Column({
name: "mother_last_name",
type: "character varying",
nullable: true
})
motherLastName!: string;
@Field()
@Column({
name: "first_name",
type: "character varying",
nullable: false
})
firstName!: string;
@Field()
@Column({
name: "middle_name",
type: "character varying",
nullable: true
})
middleName!: string;
@Field()
@Column({
name: "email",
type: "character varying",
unique: true,
nullable: false
})
email!: string;
@Field()
@Column({
name: "password",
type: "character varying",
nullable: false
})
password!: string;
@Field(() => RoleEntity)
@ManyToOne(() => RoleEntity)
@JoinColumn({name: "role_id"})
role!: RoleEntity;
@Field()
@Column({
name: "is_active",
type: "character varying",
nullable: true
})
isActive!: boolean;
@Field()
@CreateDateColumn({
name: "created_at"
})
createdAt!: string;
@Field()
@UpdateDateColumn({
name: "updated_at"
})
updatedAt!: string;
}
这是用户的解析器:
import {Arg, Mutation, Query, Resolver} from "type-graphql";
import bcrypt from "bcryptjs";
import {UserEntity} from "../../entity/user.entity";
import {RoleEntity} from "../../entity/role.entity";
@Resolver()
export class UserResolver {
@Query(() => [UserEntity])
async users() {
return await UserEntity.find();
}
@Mutation(() => UserEntity)
async createUser(
@Arg('username') username: string,
@Arg('lastName') lastName: string,
@Arg('motherLastName') motherLastName: string,
@Arg('firstName') firstName: string,
@Arg('middleName') middleName: string,
@Arg('email') email: string,
@Arg('password') password: string,
@Arg('role') role: RoleEntity,
@Arg('isActive') isActive: boolean
): Promise<UserEntity> {
const hashedPassword = await bcrypt.hashSync(password, bcrypt.genSaltSync(10));
const user = UserEntity.create({
username,
lastName,
motherLastName,
firstName,
middleName,
email,
password: hashedPassword,
role,
isActive
}).save();
return user;
}
}
但是,我得到这个错误:
but, i get this error:
(节点:14788)UnhandledPromiseRejectionWarning:错误:无法为"UserResolver"类的"createUser"的名为"role"的参数确定GraphQL输入类型.是否用作TS类型或显式类型的值是用适当的修饰符修饰还是输入适当的值?
(node:14788) UnhandledPromiseRejectionWarning: Error: Cannot determine GraphQL input type for argument named 'role' of 'createUser' of 'UserResolver' class. Does thevalue used as its TS type or explicit type is decorated with a proper decorator or is it a proper input value?
我需要你的帮助.
推荐答案
我解决了我的问题,修改了两个模型,删除了UserEntity:
I solved my problem, I modified my two models, in UserEntity I removed:
@Field(() => RoleEntity)
@ManyToOne(() => RoleEntity)
@JoinColumn({name: "role_id"})
role!: RoleEntity;
我添加了
@Field()
@Column({name: 'role_id'})
roleId!: string;
@Field(() => RoleEntity)
role!: RoleEntity;
@ManyToOne(() => RoleEntity, role => role.userConnection)
@JoinColumn({name: 'role_id'})
roleConnection!: Promise<RoleEntity>
在RoleEntity中,我添加了:
and in RoleEntity, i added:
@OneToMany(() => UserEntity, user => user.roleConnection)
userConnection!: Promise<UserEntity[]>
但是,我不知道我是否在以正确的方式(操场)进行测试:
But, I don't know if I'm doing my test in right way (Playground):
query users {
users {
firstName
username
roleId
role {
description
}
}
}
部分错误是:
消息":无法为不可为空的字段UserEntity.role返回null.",
"message": "Cannot return null for non-nullable field UserEntity.role.",
有人可以向我解释,什么地方或错误在哪里?
Somebody can explain to me, what or where is the error?
谢谢.
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