public function getValue($source)
 {
     $value = '';
     if (array_key_exists('feature', $source)) {
         $values = Feature::where('id', '=', $source['feature']);
         if ($values->count()) {
             $value = $values->first()->feature;
         }
     }
     return $value;
 }
 /**
  * post feature
  *
  * @return json
  */
 public function postFeature()
 {
     $id = isset($_GET['id']) ? (int) $_GET['id'] : false;
     $features = Feature::where('module_id', '=', $id)->get();
     $data = array();
     foreach ($features as $key => $value) {
         $item = array("id" => $value->id, "name" => $value->name_feature);
         array_push($data, $item);
     }
     echo json_encode($data);
 }