public function postDetail()
 {
     $return['success'] = 0;
     if (Input::has('id')) {
         $promo = Promo::select('title_en', 'title_id', 'content_en', 'content_id', 'picture', 'file_name', 'created_at as cdate')->find(Input::get('id'));
         if ($promo !== null) {
             $return['success'] = 1;
             $data['title_en'] = $promo->title_en;
             $data['title_id'] = $promo->title_id;
             $data['content_en'] = $promo->content_en;
             $data['content_id'] = $promo->content_id;
             $data['image'] = $promo->picture;
             $data['file_name'] = $promo->file_name;
             $data['created_at'] = $promo->cdate;
             $return['data'] = $data;
         }
     }
     echo json_encode($return);
 }