add discount to product sell js

console/migrations/m151020_164936_alter__table__discount__timestamps.php

@@ -0,0 +1,31 @@
+<?php
+
+use yii\db\Schema;
+use yii\db\Migration;
+
+class m151020_164936_alter__table__discount__timestamps extends Migration
+{
+    public function up()
+    {
+    	$this->alterColumn('discount', 'created_at', 'datetime' );
+    	$this->alterColumn('discount', 'updated_at', 'datetime' );
+    }
+
+    public function down()
+    {
+        echo "m151020_164936_alter__table__discount__timestamps cannot be reverted.\n";
+
+        return false;
+    }
+
+    /*
+    // Use safeUp/safeDown to run migration code within a transaction
+    public function safeUp()
+    {
+    }
+
+    public function safeDown()
+    {
+    }
+    */
+}