php - PhalconPHP - Add multiple checkboxes in form from model -

i have got 2 models: rooms , roomattributes. there many-many relation between them:

$this->hasmanytomany(     "id",     "roomattributes",     "roomid",     "attributesid",     "roomattributesrelation",     "id",     array('alias' => 'attributes') ); 

now i'm creating form add new room , want have list of attributes checkboxes. best way , how should save room model after?

maybe this:

       use phalcon\forms\element\select;              class roomform extends \phalcon\forms\form {                 $attr_arr = ['attr1_id' => 'attr1_name', 'n_id' => 'n_name'];                 // or $attr_arr= array_column(roomattributes::find()->toarray(),'id','name')                  $attributes = new select(                     'attributes[]',                      $attr_arr ,                     ['multiple' => 'multiple'                 ]);                 $this->add($attributes);             } 

in controller

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**** if($new_room->save()){     $attributes = $_post['attributes'];     foreach ($attributes $id){         $new_attribute = new roomattributes();         $new_attribute->roomid = $new_room->id;         $new_attribute->attributesid = $id;         $new_attribute->save();     } }