i无法将数据json与关系对象发布。
我使用mongodb。
我有3个表:table_1,table_2,table_3。
我创建关系EmbedsMany
和EmbedsOne
:
-table_2 EmbedsOne
table_1。
-table_2 EmbedsMany
table_3。
我不知道创建发布数据json以创建一个带有table_1的table_2的新项目。
import { ..., embedsMany, embedsOne } from '@loopback/repository';
import { Model1, Mode1WithRelations } from './model-1.model';
import { Model3, Model3WithRelations } from './model-2.model';
@model({
settings: {
strictObjectIDCoercion: true,
mongodb: {
collection: 'table_2'
}
}
})
export class Model2 extends Entity {
@property({
type: 'string',
id: true,
mongodb: {
dataType: 'ObjectID' // or perhaps 'objectid'?
}
})
id?: string;
@embedsMany(() => Model3)
model3?: Model3[];
@embedsOne(() => Model1)
model1: Model1;
}
export interface Model2Relations {
// describe navigational properties here
model3?: Model3WithRelations[];
model1: Mode1WithRelations;
}
export type Model2WithRelations = Model2 & Model2Relations;
存储库模型2
import { DefaultCrudRepository } from '@loopback/repository';
import { Model2, Model2Relations } from '../models';
import { DbDataSource } from '../datasources';
import { inject } from '@loopback/core';
export class Model2Repository extends DefaultCrudRepository<
Model2,
typeof Model2.prototype.id,
Model2Relations
> {
constructor(
@inject('datasources.DB') dataSource: DbDataSource,
) {
super(Model2, dataSource);
}
}
JSON Data Post
{
"address": "string",
"status": 1,
"createdAt": "2019-08-04T03:57:12.999Z",
"updatedAt": "2019-08-04T03:57:12.999Z",
"model1": {
"id": "5d465b4cd91e484250d1e54b" /* id of exist item in table_1 */
}
}
控制器由lb4 controller
期望:
- 用 EmbedsOne
的表_1项目将成功保存到表_2中。
实际:
- 错误:
{
"error": {
"statusCode": 422,
"name": "ValidationError",
"message": "The `Model2` instance is not valid. Details: `model1` is not defined in the model (value: undefined).",
"details": {
"context": "Model2",
"codes": {
"project": ["unknown-property"]
},
"messages": {
"model1": ["is not defined in the model"]
}
}
}
}
tl; dr根据Loopback 4
团队的说法 @embedsOne
@embedsMany
@referencesOne
@referencesMany
尚未实施(2019-Sep-03(。(请参阅文档或github(
,但我在Sourcecode上找到了这些装饰师及其课程因此,希望我们必须等待实施才能完成。如果我有新的东西,我会尝试更新此答案。