Saving multiple field array in mongodb using mongoose

Question

//Here is model

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);

// route

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
}

While all other fields getting saved but the one with array with multiple fields always return blank like "taskinfo : [ ] "

The post method is REST API to post a task into mongoose database, for array with single field everything working fine but array with multiple field is not getting saved, someone please help me here.

Basic help will be fine, just please teach me how to save "multiple field array".

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.

Thank You.

It looks like you have lost some code near line 9 on route. Please check. — maowtm
– maowtm, Commented Sep 13, 2015 at 2:04
I am asking logic for saving array as I dont know how to save array with multiple fields, createdon is saved by default and i am not concerned about other fields right now. — Madhur Gupta
– Madhur Gupta, Commented Sep 13, 2015 at 2:06
I am very much new to it, what i learn from all the lecture over net from udemy or pluralsight is for each field type fieldname : res.body.fieldname.. Can you tell me complete logic for multiple field array ? — Madhur Gupta
– Madhur Gupta, Commented Sep 13, 2015 at 2:10

Prabjot Singh · Accepted Answer · 2015-09-14 19:16:22Z

5

I think if taskinfo has a multiple values and you want to save it as embedded document inside task document. You should have different document of task info. So,you can save like that

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);

And now you will have different document as task info like

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

When you will save task document,

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



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

you can push it

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

Then you will save task document

var taskObj = new Task(task);

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

    });
});

edited Sep 14, 2015 at 19:16

answered Sep 13, 2015 at 6:06

Prabjot Singh

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12 Comments

Madhur Gupta Over a year ago

Thanks for a good description sir, but i have read somewhere that embedded document is not required, can you tell me how to achieve this by creating single schema, also can you suggest me some book or course from where i can learn about inserting array field in mongodb using mongoose. stackoverflow.com/questions/15208711/…

Madhur Gupta Over a year ago

Here is how i want my json document: jsoneditoronline.org/?id=118a16030d6d3394f6dab4fdcd31b6fe

Prabjot Singh Over a year ago

please follow this link before design your schema blog.mongodb.org/post/87200945828/…

Madhur Gupta Over a year ago

I have tried your ans, but error popsup, someone said i have to use push to enter & save array.

Madhur Gupta Over a year ago

also Var TaskInfo = new TaskInfo({ isactive:true, taskobject:"", taskdetails:"", iscompleted:true }) here why we arenot taking input from user ?

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