add files to project

migrations/m170731_154223_add_ref_balance_to_user.php

@@ -0,0 +1,31 @@
+<?php
+
+use yii\db\Migration;
+
+class m170731_154223_add_ref_balance_to_user extends Migration
+{
+    public function safeUp()
+    {
+        $this->addColumn("users", "ref_balance", $this->decimal(24, 4)->defaultValue(0));
+    }
+
+    public function safeDown()
+    {
+        $this->dropColumn("users", "ref_balance");
+    }
+
+    /*
+    // Use up()/down() to run migration code without a transaction.
+    public function up()
+    {
+
+    }
+
+    public function down()
+    {
+        echo "m170731_154223_add_ref_balance_to_user cannot be reverted.\n";
+
+        return false;
+    }
+    */
+}