Question

我正在构建业务管理软件，我正在创建一个Jobs集合，并将单个Employee和Customer对象及其所有数据从他们自己的集合（Employee＆amp; Customer）链接到Jobs集合。

然后我在表上加载Jobs集合中的所有对象（单个作业）。并继续收到错误说“Job.aggregate（...）。toArray不是函数”

这是当前的获取请求

router.get("/upcoming-jobs", isLoggedIn, function(req, res){
Job.find({author: req.user._id}, function(err, allJobs){
 if(err){
   console.log(err);
 } else {
    Job.aggregate([
      { $lookup: {
            from: 'Customers',
            localField: 'customer',
            foreignField: '_id',
            as: 'jobCustomer'}
      },
      { $unwind: "$jobCustomer" },
      { $lookup: {
            from: "Employees",
            localField: "employee",
            foreignField: '_id',
            as: 'jobEmployee'}
      },
      { $unwind: "$jobEmployee"},
     ]).toArray(function(err, res){
      if(err){
        console.log(err);
      } else {
        console.log(res);
      }
    });
  });
   res.render("upcoming-jobs", {Jobs: allJobs});
  }
 });
});

以下是Employee Schema和Jobs Schema我想将所有数据链接到每个Jobs对象

var EmployeeSchema = new mongoose.Schema({
 //ALL EMPLOYEE DATA NEEDED
 first_name: String,
 last_name: String,
 phone_number: String,
 email: String,
 address: String,
 author: {type: mongoose.Schema.Types.ObjectId, ref:"User"},
 submittedBy: String
});

module.exports = mongoose.model("Employees", EmployeeSchema);

CUSTOMER SCHEMA

var CustomerSchema = new mongoose.Schema({
 // all customer data
 first_name: String,
 last_name: String,
 phone_number: String,
 email: String,
 address: String,
 author: {type: mongoose.Schema.Types.ObjectId, ref:"User"},
 submittedBy: String
});

module.exports = mongoose.model("Customers", CustomerSchema);

如何重写此功能，以便在我的ejs页面加载对象时加载

<% Jobs.forEach(function(Jobs){ %>
  <%= Jobs.jobCustomer.first_name %>
  <%= Jobs.jobEmployee.first_name %>
<% }) %>

这是我的工作计划

var mongoose = require("mongoose");

var JobsSchema = new mongoose.Schema({
 customer: {type: mongoose.Schema.Types.ObjectId, ref:"Customers"},
 employee: {type: mongoose.Schema.Types.ObjectId, ref:"Employees"},
 author: {type: mongoose.Schema.Types.ObjectId, ref:"User"},
 service: String,

}）;

module.exports = mongoose.model("Jobs", JobsSchema);

当我创建一个新作业并添加到集合时，它从所选客户和员工获取objectId现在我需要帮助显示具有相同objectId的客户和员工的信息

无法弄清楚如何使用$ lookup mongo nodejs ERROR - Collection.aggregate（...）。toArray不是一个函数

0 个答案: