我正在开发一个社交应用程序,其中我有一个与用户模型(comment_by)建立关系的 PostComments 模型。
PostComments 模型
import { Entity, model, property, belongsTo} from '@loopback/repository';
import {Users} from './users.model';
@model({settings: {strict: false, strictObjectIDCoercion: true, }})
export class PostComments extends Entity {
@property({
type: 'string',
id: true,
generated: true,
})
comment_id?: string;
@property({
type: 'string',
required: true,
})
post_id: string;
@property({
type: 'string',
required: true,
})
comment_text: string;
@property({
type: 'date',
default: new Date(),
})
created_at?: string;
@belongsTo(() => Users)
comment_by: string;
[prop: string]: any;
constructor(data?: Partial<PostComments>) {
super(data);
}
}
export interface PostCommentsRelations {
// describe navigational properties here
}
export type PostCommentsWithRelations = PostComments & PostCommentsRelations;
我需要在单个查询中获取带有用户名(评论者)的所有评论列表,并在下面尝试返回用户模型的所有字段的查询,而我只需要用户名
this.postCommentsRepository.find({
fields: {
comment_id: true,
post_id: true,
comment_text: true,
created_at: true,
comment_by: true
},
include: [{
relation: 'users',
}],
where: {
post_id: post_id
}
});
我也想使用环回 3 功能,但在环回 4 文档中找不到任何相关内容