added history of changes

common/behaviors/LogBehavior.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Common\Behaviors;
+
+use yii\base\Event;
+use yii\db\ActiveRecord;
+use yii\base\Behavior;
+
+class LogBehavior extends Behavior
+{
+    public function events()
+    {
+        return[
+            ActiveRecord::EVENT_BEFORE_UPDATE => 'beforeUpdate',
+        ];
+    }
+
+    public function beforeUpdate(Event $event)
+    {
+        $model = $event->sender;
+        $dirtyAttributes = $model->getDirtyAttributes();
+
+        foreach ($dirtyAttributes as $key => $value)
+        {
+            if($model->getOldAttribute($key) == $value)
+            {
+                continue;
+            }
+            $change = new \common\models\ChangeHistory([
+                'type' => get_class($model),
+                'type_id' => $model->getAttribute('id'),
+                'field_name' => $key,
+                'label' => $model->getAttributeLabel($key),
+                'old_value' => $model->getOldAttribute($key),
+                'new_value' => $value,
+                'created_at' => date('Y-m-d-H:i:s', time()),
+            ]);
+            $change->save();
+        }
+    }
+}