如何在Loopback中设置内部数组对象的关系？

Question

我在下表中有数据

{
    "_id" : ObjectId("5a9d1b70b826170df4365489"),
    "userId" : "5a93e0b76d32cd0e6c1b99aa",
    "mediaId" : "5a99330af218d30c981cda2f",
    "comment" : "Hi this is a video",
    "**replies**" : [ 
        {
            "comment" : "this is a reply 1",
            "**userId**" : "5a93e0b76d32cd0e6c1b99aa"
        }, 
        {
            "comment" : "this is a reply 2",
            "**userId**" : "5a93e0b76d32cd0e6c1b99aa"
        }, 
        {
            "comment" : "this is a reply 3",
            "**userId**" : "5a93e0b76d32cd0e6c1b99aa"
        }
    ],
    "createdAt" : "",
    "updatedAt" : ""
}

我的问题： 如何在环回中的每个回复数组对象中为userId设置关系并包含来自用户表的数据？

我预期的输出：

{
    "_id" : ObjectId("5a9d1b70b826170df4365489"),
    "userId" : "5a93e0b76d32cd0e6c1b99aa",
    "mediaId" : "5a99330af218d30c981cda2f",
    "comment" : "Hi this is a video",
    "**replies**" : [ 
        {
            "comment" : "this is a reply 1",
            "**userId**" : "5a93e0b76d32cd0e6c1b99aa",
            "userDetails":{
               "name":"xxxxxxxxx",
               "address":"xxxxxxxx"
            }

        }, 
        {
            "comment" : "this is a reply 2",
            "**userId**" : "5a93e0b76d32cd0e6c1b99aa",
            "userDetails":{
               "name":"xxxxxxxxx",
               "address":"xxxxxxxx"
            }
        }, 
        {
            "comment" : "this is a reply 3",
            "**userId**" : "5a93e0b76d32cd0e6c1b99aa",
            "userDetails":{
               "name":"xxxxxxxxx",
               "address":"xxxxxxxx"
            }
        }
    ],
    "createdAt" : "",
    "updatedAt" : ""
}

我被困在这里。亲切地分享一些解决方案

Answer 1

执行以下操作

1. 创建3个模型：yourModel，user，reply
2. 在relations中设置这些model definition json或使用node api：

  

yourModel embedsMany 回复，回复 belongsTo 用户，用户    hasMany 回复

1. 使用字符串化的json作为包含过滤器
查询数据

https://loopback.io/doc/en/lb3/Querying-data.html#using-stringified-json-in-rest-queries

  

{include：{relatedModel1：[{relatedModel2：'relationName'}，'relatedModel']}}

这样的事可能

/api/your_model/?filter={"include":{"replies":{"userDetails":true}}}