Can't call success function - node.js

Question

I'm developing a Backbone Node.js with Express.js app. I'm trying to trigger a function after receiving a response from my server like the code bellow:
mainView.js
...
user: null,
initialize: function () {
_.bindAll(this, 'registerSuccess', 'loginSuccess');
this.user = new userModel();
}
registerSuccess: function () {
this.user.auth({
success: this.loginSuccess
});
});
loginSuccess: function () {
console.log('loginSuccess');
}
userModel.js
...
, auth: function (options) {
$.ajax({
url: 'users/auth'
, type: 'post'
}, options);
})
app.js
var api = require('./routes/apiController');
app.post('/users/auth', api.userAuth);
apiController.js
exports.userAuth = function (req, res) {
return res.send( {
status: 200
});
}
I´m getting the response:
But it doesn't print the console.log('loginSuccess') sentence from this function.

Answer 1

There are two ways to call $.ajax:
jQuery.ajax(url, settings)
jQuery.ajax(settings)
In the first case, url must be a string and settings is an optional object; in the second case, settings is again an optional object. You're calling $.ajax with two objects:
auth: function (options) {
$.ajax({
url: 'users/auth'
, type: 'post'
}, options);
}
Since the first argument is not a string, $.ajax will use the second calling form and ignore options completely. You probably want to use _.extend to merge the arguments:
$.ajax(_({
url: 'users/auth'
, type: 'post'
}).extend(options));
Or _.defaults if you want to avoid accidentally overwriting url and type:
$.ajax(_({
url: 'users/auth'
, type: 'post'
}).defaults(options));
Or, since you only have two things, just stuff them in manually:
options = _(options).clone(); // Avoid accidentally messing with the argument.
options.url = 'users/auth';
options.type = 'post';
$.ajax(options);