Поиск и быстрая покупка аякс

ajax.php

<?php
define('MODX_API_MODE', true);
include_once("index.php");
$modx->db->connect();
if (empty ($modx->config)){
    $modx->getSettings();
}
$modx->invokeEvent("OnWebPageInit");
if(!isset($_SERVER['HTTP_X_REQUESTED_WITH']) || (strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) != 'xmlhttprequest')){
    $modx->sendRedirect($modx->config['site_url']);
}
switch($_REQUEST['q']){
	case 'search':
		$phrase = $modx->db->escape($_POST['search']);
		$result = $modx->runSnippet('DocLister', array(
			'parents' => 7,
			'depth' => 4,
			'tpl' => '@CODE: <div class="sres"><a href="[+url+]">[+pagetitle+]</a><span>артикул [+article+]</span></div>',
			'tvPrefix' => '',
			'tvList' => 'article',
			'addWhereList' => 'c.template = 10',
			'filters' => 'OR(content:pagetitle:like:'.$phrase.';tvd:article:like:'.$phrase.')',
			'ownerTPL' => '@CODE: [+dl.wrap+]',
			'noneTPL' => '@CODE: Товары не найдены. Вы можете ввести название или артикул товара',
			'noneWrapOuter' => 1,
		));
		echo $modx->parseDocumentSource($result);
		exit;
	break;
	case 'qpay_form':
		$result = $modx->runSnippet('FormLister', array(
			'formid' => 'qpay_form',
			'rules' => '
			{
				"name":{
					"required":"Обязательно введите имя"
				},
				"phone":{
					"required":"Обязательно введите номер телефона",
					"phone":"Введите номер правильно"
				}
			}',
			'to' => 'info@1px.su',
			'reportTpl' => 'qpayReport',
			'subject' => 'Быстрый заказ с сайта Угги',	
			'errorClass' => ' has-error',
			'requiredClass' => ' has-warning',
			'messagesOuterTpl' => '@CODE:<div class="alert alert-danger" role="alert">[+messages+]</div>',
			'errorTpl' => '@CODE:<span class="help-block">[+message+]</span>',	
			'formControls=`size',
			'prepare' => array(function($modx, $data, $FormLister, $name){
				//делаем урл для отчёта			
				if ( isset($data['qpay_id']) && !empty($data['qpay_id']) ){
					$data['item_url'] = $modx->makeUrl($data['qpay_id'], '', '', 'full');
				}		
				return $data;
			}),	
			'formTpl' => 'qpay_form_tpl',
			'successTpl' => 'qpaySuccess',
			'removeEmptyPlaceholders' => 1
		));
		echo $modx->parseDocumentSource($result);
		exit();
	break;	

	default:
		$modx->sendForward($modx->config['error_page']);
	break;
}
?>

qpay_form_tpl

<form method="post" action="cart" id="qpay_form">
	<input name="formid" type="hidden" value="qpay_form">
	<input type="hidden" name="qpay_id" id="qpay_id" value="[+qpay_id+]">
	[+form.messages+]
	<div class="row">
		<div class="col-sm-12">
			<fieldset id="account">
				<div class="form-group required [+name.errorClass+][+name.requiredClass+]">
					<label class="control-label" for="input-name">Имя</label>
					<input type="text" name="name" placeholder="" class="form-control" value="[+name+]">
					[+name.error+]
				</div>
				<div class="form-group required [+phone.errorClass+][+name.requiredClass+]">
					<label class="control-label" for="input-phone">Телефон</label>
					<input type="text" name="phone"  placeholder="" class="form-control" value="[+phone+]">
					[+phone.error+]
				</div>
				<div class="form-group required">
					<label class="control-label" for="input-address">Размер</label>
					<input type="text" name="size" id="size_qform" placeholder="" class="form-control" value="[+size+]">
				</div>
				[+append_elements+]
			</fieldset>
		</div>
	</div>				
	<div class="buttons">
		<div class="pull-left">
			<button type="submit" name="submit" class="button button-cart">Отправить <i class="material-design-forward18"></i></button>
		</div>
	</div>
</form>