/**
  * (non-PHPdoc)
  * @see \yii\gii\generators\crud\Generator::generateSearchRules()
  */
 public function generateSearchRules()
 {
     $rules = parent::generateSearchRules();
     foreach ($rules as &$r) {
         $r = str_replace(' => ', '=>', $r);
         $posEndAttr = strpos($r, ']', 2);
         $attrList = substr($r, 2, $posEndAttr);
         $r = substr($r, 0, 2) . str_replace(', ', ',', $attrList) . substr($r, $posEndAttr + 2);
     }
     return $rules;
 }