Local PhoneGap contacts to Backbone collection

ContactsCollection.js

(function() {

	// Attach to namespaced window object
	window.ioffice = window.ioffice || {};
	ioffice.collections = ioffice.collections || {};

	ioffice.collections.contacts = Backbone.Collection.extend({
		model: Backbone.Model,

		getContacts: function(filter, cb) {
			if (typeof ContactFindOptions === "undefined") {
				if (cb) cb();
				return;
			}

			var fields = ['name', 'displayName', 'emails'],
				options = new ContactFindOptions(),
				callback = cb || $.noop,
				self = this;

			options.filter = filter || '';
			options.multiple = true;

			this.reset();

			var onSuccess = function(contacts) {
				var self = this;

				_.each(contacts, function(contact) {
					var name = contact.name,
						email;

					if (contact.emails) {
						email = _.findWhere(contact.emails, {'type': 'work'}) || contact.emails[0];
					}

					if (email) {
						self.add({
							firstName: name.givenName || '',
							lastName:  name.familyName || '',
							email: email.value,
							local: true
						})
					}
				});

				callback();
			};

			var onError = function(error) {
				console.log(error);
				callback();
			};

			navigator.contacts.find(fields, _.bind(onSuccess, this), _.bind(onError, this), options);
		}
	});

})();