Question

我要转换存储有部门ID的原始数组，将目标文档推送到同一数组。但是执行时出现“将循环结构转换为JSON”。

有什么主意，如何获取ID引用的所有对象文档并替换相同的数组之后？

我创建了一个Mutations.js来管理我的函数，将JSON转换为删除_id到id并使用API url添加href键。

但是首先我想将部门对象文档添加到原始JSON中的部门密钥中。

控制器用户



const boom = require('boom')
const User = require('../models/Users')
const Departments = require('../models/Departments')
const Mutation = require('../mutations')

    // GET all users
    exports.getUsers = async (req, reply) => {
        try {
            const users = await User.find()
            var json = [];
            users.map(item => {
                var element = Mutation.toJSON( item.toObject({ versionKey: false }) );
                element.departments = Mutation.rebuildArray(Departments, item.departments)
                json.push(element);
            })
            return json
        } catch (err) {
            throw boom.boomify(err)
        }
    }

Mutation.js

const boom = require('boom')
const User = require('../models/Users')
const Departments = require('../models/Departments')
const Mutation = require('../mutations')

    // GET all users
    exports.getUsers = async (req, reply) => {
        try {
            const users = await User.find()
            var json = [];
            users.map(item => {
                var element = Mutation.toJSON( item.toObject({ versionKey: false }) );
                element.departments = Mutation.rebuildArray(Departments, item.departments)
                json.push(element);
            })
            return json
        } catch (err) {
            throw boom.boomify(err)
        }
    }

例如，我想接收此JSON：



//Here convert document to JSON with structure needed
const toJSON = document => {
   document.id = document._id;
   delete document._id;
   return document;
}

//Create a array with document searched by id
const rebuildArray = (model, array) => {
      var newArray = [];
      array.map(item => {
        var element = model.findById(item);
      newArray.push(toJSON(element));
   })
   return newArray;
}

exports.rebuildArray = buildArray;
exports.toJSON = toJSON;
exports.addURL = addURL;

使用此原始JSON：

//Here convert document to JSON with structure needed
const toJSON = document => {
   document.id = document._id;
   delete document._id;
   return document;
}

//Create a array with document searched by id
const rebuildArray = (model, array) => {
      var newArray = [];
      array.map(item => {
        var element = model.findById(item);
      newArray.push(toJSON(element));
   })
   return newArray;
}

exports.rebuildArray = buildArray;
exports.toJSON = toJSON;
exports.addURL = addURL;

谢谢！

Answer 1

您应该尝试使用。populate（“部门”）的猫鼬查询。

猫鼬-如何将文档添加到具有该文档ID的数组

1 个答案: