- Add new validation rule

common/modules/bids/models/Bid.php

@@ -81,6 +81,8 @@ class Bid extends \common\components\ActiveRecordModel
 
             [['email'], 'required', 'on' => self::SCENARIO_SUBSCRIBE],
 
+            [['email'], 'checkUnique', 'on' => self::SCENARIO_SUBSCRIBE, 'message' => 'Вы уже подписаны на новости блога'],
+
             
             [['text'], 'string'],
             [['name'], 'string', 'max' => 100],
@@ -91,13 +93,10 @@ class Bid extends \common\components\ActiveRecordModel
         ];
     }
 
-    public function beforeSave($insert){
-        if (!parent::beforeSave($insert))
-            return false;
-
-        if (!is_null($this->email)) {
-            if (Bid::find()->where(['email' => $this->email])->exists()===true) {
-                $this->addError('email', 'Вы уже подписаны на новости блога');
+    public function checkUnique($attribute, $params){
+        if (!is_null($this->$attribute)) {
+            if (Bid::find()->where([$attribute => $this->$attribute])->exists()===true) {
+                $this->addError($attribute, $params['message']);
                 return false;
             }
         }