Handeling response from backbone.js collection using fetch - backbone.js

Question

am pretty new to backbone.js and managed recently to finish my first application. I made a collection that is responsible for fetching data through a API but am not able to loop through the result and use it.
Here is my model file
define([
'jquery',
'underscore',
'backbone'
], function($, _, Backbone){
var VehicleLookupModel = Backbone.Model.extend({
//data will contain one of the items returned from the collection's 'parse' function.
parse: function(data){
return data;
}
})
return VehicleLookupModel;
});
collection file
define([
'jquery',
'underscore',
'backbone',
'l/models/VehicleLookupModel'
], function($, _, Backbone, VehicleLookupModel){
var VehicleLookupModelSet = Backbone.Collection.extend({
model : VehicleLookupModel,
url : function() {
return '/en/car/api/model-lookup-model.json/'+this.make+'/';
},
parse : function(response) {
return response;
},
initialize: function(options) {
options || (options = {});
this.make = options.make;
}
})
return VehicleLookupModelSet;
});
and finally the view file
define([
'jquery',
'underscore',
'backbone',
'l/collections/VehicleLookupMakeSet',
'l/collections/VehicleLookupModelSet',
'l/collections/VehicleLookupTrimSet'
], function($, _, Backbone, VehicleLookupMakeSet, VehicleLookupModelSet, VehicleLookupTrimSet){
var BrowseVehicleView = Backbone.View.extend({
el: $('#vehicle-browse-form'),
initialize: function(){
// Extend JQuery example
// This would extend JQuery function for resetting elements on the form
$.fn.extend({
resetElement: function(){
$(this).attr('disabled', 'disabled');
$(this).html('');
return $(this);
}
});
// define array of elements to be used in DOM manipulations
this.elements = {
"make" : $('#id_make', this.el),
"model" : $('#id_model', this.el),
"trim" : $('#id_trim', this.el),
"year" : $('#id_year', this.el)
}
},
events: {
"change #id_make" : "onMakeChange",
"change #id_model" : "onModelChange",
"change #id_trim" : "onTrimChange"
},
render: function(){
// Using Underscore we can compile our template with data
},
onMakeChange: function(event) {
this.elements.model.resetElement();
this.elements.trim.resetElement();
this.collection = new VehicleLookupModelSet({make: this.elements.make.val()})
this.collection.fetch();
console.log(this.collection);
},
onModelChange: function(event) {
var VehicleLookupTrimInstance = new VehicleLookupTrimSet({make: this.elements.make.val(), model: this.elements.model.val()})
VehicleLookupTrimInstance.fetch();
},
onTrimChange: function(event) {
},
renderItem: function(object, item) {
console.log(item);
}
});
// Our module now returns our view
return new BrowseVehicleView;
});
The above is console.log(this.collection) is returning an object with many property which am not sure how to use. But, I noticed that there is a method "models" and inside models there is many number of objects, each represent the value of the json.
Any ideas how i can loop through the object?

Answer 1

this.collection.fetch({
success: function(collection, response) {
_.each(collection.models, function(model) {
console.log(model.toJSON());
})
}
});