Backbone not making a put request with save() after save

Backbone not making a put request with save() after save

I am experiencing a really interesting problem with backbone, I have a
function like this in one of my views:
addpeople :function(){
var authArray = _.clone(this.model.get("authorizedUsers"));
var values = $(".add-input").val().split(",");
values.forEach(function(value) {
authArray.push(value);
});
this.model.set("authorizedUsers" , authArray);
this.model.save();
},
this function gets called when a button is clicked. This version of the
function triggers a change event because I am cloning my array, but for
some reason this.model.save()never gets called, aka the server never
receives a PUT request. When I refresh the page I got back to the old
state of the model..
However if I dont clone the array and change the function to, this:
addpeople :function(){
var authArray = this.model.get("authorizedUsers");
var values = $(".add-input").val().split(",");
values.forEach(function(value) {
authArray.push(value);
});
this.model.set("authorizedUsers" , authArray);
this.model.save();
},
This time the PUT request is sent successfully, but the page is not
re-rendered because a change event is not triggered. When I refresh the
page I can see the updated model..
I know that I can manually trigger a change event in the second example
but I am more curious about why my this.model.save() is not called in the
first example..
To help you understand the problem more my model looks something like:
var PostModel = Backbone.Model.extend({
urlRoot : '/tweet',
idAttribute: '_id',
defaults:{
name: '',
comments: [],
tags: [],
authorizedUsers: [],
postedBy : '',
dateCreated: ''
},
});
and my node.js update function looks like:
exports.updateTweet = function(req,res){
console.log("Getting called ! ")
var update = req.body;
var id = req.url.split("/")[2];
Post.update({ _id: id }, { $set: { authorizedUsers:
req.body.authorizedUsers }}, function (err, post) {
if (err) return handleError(err);
});
res.end();
};