public function actionProduct_in_order()
 {
     $order = new Backend_orders();
     $product_id = $_POST['product_id'];
     $status = $order->check_product_in_order($product_id);
     if ($status != 0) {
         echo "1";
         //NoDelete
     } else {
         $columns = array("delete_flag" => '1');
         Yii::app()->db->createCommand()->update("product", $columns, "product_id = '{$product_id}' ");
     }
 }
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta name="description" content="">
        <meta name="author" content="">
        <title>
            <?php
            $product_model = new Backend_product();
            $order_model = new Backend_orders();
            $web = new Configweb_model();
            echo $web->get_webname();
            ?>
        </title>
        <style type="text/css">
            body{
                overflow-x: hidden;
            }
        </style>
        <link rel="stylesheet" href="<?= Yii::app()->baseUrl; ?>/themes/backend/css/system.css" type="text/css" media="all" />
        <link rel="stylesheet" href="<?= Yii::app()->baseUrl; ?>/themes/backend/bootstrap/css/bootstrap.css" type="text/css" media="all" />
        <!--
                <link rel="stylesheet" href="<?//= Yii::app()->baseUrl; ?>/themes/backend/css/bootstrap-theme.css" type="text/css" media="all" />
        -->
        <link rel="stylesheet" href="<?= Yii::app()->baseUrl; ?>/assets/gallery_img/dist/magnific-popup.css" type="text/css" media="all" />
        <link rel="stylesheet" href="<?= Yii::app()->baseUrl; ?>/assets/DataTables-1.10.7/media/css/dataTables.bootstrap.css" type="text/css" media="all" />
        <link rel="stylesheet" href="<?= Yii::app()->baseUrl; ?>/assets/DataTables-1.10.7/extensions/TableTools/css/dataTables.tableTools.css" type="text/css" media="all" />
        <link rel="stylesheet" href="<?php echo Yii::app()->baseUrl; ?>/css/font-awesome-4.3.0/css/font-awesome.css"/>
        <link rel="stylesheet" href="<?= Yii::app()->baseUrl; ?>/themes/backend/css/simple-sidebar.css"/>
        <link rel="stylesheet" href="<?= Yii::app()->baseUrl; ?>/assets/perfect-scrollbar/css/perfect-scrollbar.css"/>