Ionic infinite scroll with JSON data [issue]

Hi, i suggest:

// CONTROLLERS
.controller('CarsCtrl', function($scope, $timeout, CarsFactory) {
$scope.cars = [];
$scope.currentPage = 0;

// Load More
$scope.loadMore = function (){
	CarsFactory.getCars($scope.currentPage).then(function (response){
		$scope.noMoreItemsAvailable = false;

		if(response.data){
			$scope.cars = $scope.cars.concat(response.data);
			//console.log("length: "+$scope.cars.length+', page: '+$scope.currentPage);
			$scope.noMoreItemsAvailable = true; // enable loadMore()
			$scope.currentPage += 1;
			$scope.$broadcast('scroll.infiniteScrollComplete');
		}

// response.data = ""

 	});
};
$scope.loadMore();

// refefresh
$scope.doRefresh = function() {
	$timeout(function () {
		$scope.loadMore();
		$scope.$broadcast('scroll.refreshComplete');
	}, 1000);
};

})

// SERVICES
.factory('CarsFactory', function($http) {
var cars = [];

return {
	getCars: function(page){
		return $http.get('http://yourserver.com?page='+page).then(function(response){
			cars = response; // return response.data;
			return cars;
		});
	}

// ...
};
});

// EX: codeigniter

$per_page = (int)$this->input->get('page');
//$offset = $this->config->item('per_page');
$offset = 12;
$per_page = $per_page * $offset;

	$products 		= $this->ads->get_ads($offset, $per_page);
	if($products)
	{
		$ads = array();
		foreach ($products as $k=>$v)
		{
			$ads[$k]['id'] 			= $v->id;
			$ads[$k]['ad_headline'] = $v->ad_headline";
			$ads[$k]['ad_text'] 	= $v->ad_text";
			$ads[$k]['category'] 	= $v->category;
			$ads[$k]['cateid'] 	= $v->cateid;
		}
	}else {
		$ads = "";
	}

	$this->load->view('ajax_output',array('data'=>$ads));