MultiTV line as single cart item for Commerce

changetitleprice.plugin.inc.php

switch ($modx->event->name) {
    case 'OnBeforeCartItemAdding': {
		$offset = intval($params['item']['options']['variant'])-1;
		$itemid = intval($params['item']['id']);
		$myitemfields = json_decode($modx->runSnippet("multiTV",Array('tvName'=>'variant','toJson'=>1,'display'=>1,'offset'=>$offset,'docid'=>$itemid)),TRUE)[0];
		$params['item']['price'] = $myitemfields['price'];
		$params['item']['name'] = $myitemfields['title'];
    }
}

tovar.tpl

[!multiTv? &tvName=`variant` &display=`all`!]

variant.config.inc.php

<?php
$settings['display'] = 'horizontal';
$settings['fields'] = array(
    'title' => array(
        'caption' => 'Наименование',
        'type' => 'text'
    ),
	'weight' => array(
        'caption' => 'Вес',
        'type' => 'text'
    ),
    'price' => array(
        'caption' => 'Цена',
        'type' => 'text'
    )
);
$settings['templates'] = array(
    'outerTpl' => '<div class="variants">[+wrapper+]</div>',
    'rowTpl' => '
		<form action="#" data-commerce-action="add">
			<table class="table">
				<tr>
					<td>[+title+]</td>
					<td><input type="text" name="count" value="1"></td>
					<td><input type="submit" value="Add"></td>
				</tr>
			</table>
			<input type="hidden" name="id" value="[*id*]">
			<input type="hidden" name="options[name]" value="[+title+]">
			<input type="hidden" name="options[weight]" value="[+weight+]">
			<input type="hidden" name="options[variant]" value="[+row.number+]">
		</form>
	'
);