pushing object into array schema in Mongoose

Question

I have this mongoose schema

var mongoose = require('mongoose');  var ContactSchema = module.exports = new mongoose.Schema({   name: {     type: String,     required: true   },   phone: {     type: Number,     required: true,     index: {unique: true}   },   messages: [   {     title: {type: String, required: true},     msg: {type: String, required: true}   }] }, {     collection: 'contacts',     safe: true }); 

and trying to update the model by doing this:

Contact.findById(id, function(err, info) {     if (err) return res.send("contact create error: " + err);      // add the message to the contacts messages     Contact.update({_id: info._id}, {$push: {"messages": {title: title, msg: msg}}}, function(err, numAffected, rawResponse) {       if (err) return res.send("contact addMsg error: " + err);       console.log('The number of updated documents was %d', numAffected);       console.log('The raw response from Mongo was ', rawResponse);      });   }); 

I'm I not declaring the messages to take an array of objects?
ERROR: MongoError: Cannot apply $push/$pushAll modifier to non-array

Any ideas?

Answer 1

mongoose does this for you in one operation.

Contact.findByIdAndUpdate(     info._id,     {$push: {"messages": {title: title, msg: msg}}},     {safe: true, upsert: true},     function(err, model) {         console.log(err);     } ); 

Please keep in mind that using this method, you will not be able to make use of the schema's "pre" functions.

http://mongoosejs.com/docs/middleware.html

As of the latest mogoose findbyidandupdate needs to have a "new : true" optional param added to it. Otherwise you will get the old doc returned to you. Hence the update for Mongoose Version 4.x.x converts to :

Contact.findByIdAndUpdate(         info._id,         {$push: {"messages": {title: title, msg: msg}}},         {safe: true, upsert: true, new : true},         function(err, model) {             console.log(err);         }     );