A Backbone Model with constructor

CarBackboneModel-version2.js

//Create a Car Model
var Car = Backbone.Model.extend({

	//Validate the Car Model
	validate: function(attr) {
		if( !(attr.brand && attr.model && attr.color) ) {
			return "Error Occurred";
		}
	},

	//Initialize is called after the Model object is constructed
	initialize: function() {

		//if there's an validation error invoke this function
		this.bind("error", function (model, error) { 
			console.log(error);
		});

		console.log('Inside initialize');
	},

	//Override the constructor
	constructor: function (attributes, options) {
		console.log('Inside constructor')

		//validate the attributes
		var validationMsg= this.validate(attributes);

		//if validate method returns an error message
		if(validationMsg) 
			return {};
		else
			//call the Backbone.Model constructor
			Backbone.Model.prototype.constructor.call(this, attributes);
	}
});