public function checkGroup($attribute, $params) { foreach ($this->{$attribute} as $gid) { $query = new \yii\db\Query(); $query->select('id')->from(GroupSales::tableName())->where('id = :gid')->addParams([':gid' => $gid]); if (!$query->exists()) { $this->addError($attribute, 'Sales Man did you search is not exist for group id ' . $gid); } } }