使用 mongoose 在 mongodb 中保存多个字段数组

Question

//这里是模型

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var ObjectId = Schema.ObjectId;

// Task schema
var taskSchema = mongoose.Schema({

 tasktype  : {type: String},
 createdon : {type: Date, default: Date.now},
 createdby : {type: Schema.Types.ObjectId,ref: 'User'},
 visitedby : [{type: Schema.Types.ObjectId,ref: 'User'}],
 taskinfo  : [{ isactive:Boolean, taskobject:String, taskdetails:String, iscompleted:Boolean}]  

});
module.exports = mongoose.model('Task', taskSchema);

// 路线

var Task     = require ('../models/task');
var User       = require ('../models/user');
var config     = require ('../../config');
module.exports = function(app, express) {

    var api = express.Router();

  api.post('/tasks', function (req, res) {
    var task = new Task({
 // ...
 tasktype  : req.body.tasktype,
 taskinfo  : req.body.taskinfo,
      }); 

     task.save(function(err){
        if(err){
           res.send(err);
        return;
        }
       res.json({message:'Task has been created'})
      });
return api
}

虽然所有其他字段都已保存，但具有多个字段的数组始终返回空白，例如“taskinfo：[]”

post 方法是 REST API，用于将任务发布到 mongoose 数据库中，对于具有单个字段的数组，一切正常，但具有多个字段的数组未保存，请在此帮助我。

基本帮助就可以了，请教我如何保存“多字段数组”。

Mongoose doesnot always require subdocument structure and this can be achieved by the above model, please dont advice to use subdocument structure, I want to learn this.

谢谢。

Answer 1

我认为如果 taskinfo 有多个值，并且您想将其保存为任务文档中的嵌入文档。您应该有不同的任务信息文档。所以，你可以这样保存

var TaskInfoSchema = require("taskInfo.js").TaskInfoSchema

var taskSchema = mongoose.Schema({

 tasktype  : {type: String},
 createdon : {type: Date, default: Date.now},
 createdby : {type: Schema.Types.ObjectId,ref: 'User'},
 visitedby : [{type: Schema.Types.ObjectId,ref: 'User'}],
 taskinfo  : [TaskInfoSchema]  

});
module.exports = mongoose.model('Task', taskSchema);

现在您将拥有不同的文档作为任务信息，例如

var taskInfo = mongoose.Schema({

     isactive:{type:Boolean}, 
     taskobject:{type:String}, 
     taskdetails:{type:String}, 
     iscompleted:{type:Boolean}

    });
    var TaskInfo = mongoose.model('TaskInfo', taskSchema);
    module.exports.TaskInfo = TaskInfo
    module.exports.TaskInfoSchema = taskSchema

当你要保存任务文件时，

 Var TaskInfo = new TaskInfo({
          isactive:true, 
          taskobject:"", 
          taskdetails:"", 
          iscompleted:true
    })



var task = {};
task.tasktype = req.body.tasktype;

你可以推它

 task.taskinfo = [];
        for (var i = 0; i < req.body.taskInfo.length; i++) {
            var taskInfo = new TaskInfo(req.body.taskInfo[i]);
            task.taskinfo.push(taskInfo);
        }

然后你将保存任务文档

var taskObj = new Task(task);

    taskObj.save(function (err) {
        if (err) {
            res.send(err);
            return;
        }
        res.json({
            message: 'Task has been created'
        })

    });
});