/**
  * проверяем изменения в героях
  */
 public function checkHeroes($model)
 {
     $array_identical = false;
     if (count($model->dotaEventHeroes) != count($model->hero_id)) {
         $array_identical = false;
     } else {
         foreach ($model->dotaEventHeroes as $model1) {
             $array_identical = false;
             foreach ($model->hero_id as $value) {
                 $array_identical = false;
                 if ($model1->hero_id == $value) {
                     if ($model->price_md_h[$model1->hero_id] == $model1->price_md && $model->price_hd[$model1->hero_id] == $model1->price_hd) {
                         $array_identical = true;
                     } else {
                         $array_identical = false;
                     }
                 }
                 if ($array_identical === false) {
                     break;
                 }
             }
             if ($array_identical === false) {
                 break;
             }
         }
     }
     if ($array_identical == false) {
         foreach ($model->dotaEventHeroes as $model1) {
             $model1->delete();
         }
         foreach ($model->hero_id as $hero_id) {
             if ($model->price_md_h[$hero_id] != 0 || $model->price_hd[$hero_id] != 0) {
                 $model_n = new DotaEventHero();
                 $model_n->event_id = $model->id;
                 $model_n->hero_id = $hero_id;
                 if ($model->price_md_h[$hero_id] != 0) {
                     $model_n->price_md = $model->price_md_h[$hero_id];
                 }
                 if ($model->price_hd[$hero_id] != 0) {
                     $model_n->price_hd = $model->price_hd[$hero_id];
                 }
                 $model_n->save();
                 //echo'<pre>';var_dump($model_n);echo'</pre>';die;
             }
         }
     }
 }