evo сортировка

sort.php

<form id="sort_count" name="sort_count" method="get" action="[~[*id*]~]">
	<div class="col-md-6 col-sm-6 col-xs-12">
	    <div class="sort-by">
	        <label>Сортировка:</label>
	        <div class="select-sort-by">
	            <select class="inputbox" name="order" id="order" onChange="window.location=window.location.pathname+'?sort='+this.value;">
	                <option [!selected? &param=`sort` &znach=`pagetitle`!] class="pagetitle" value="pagetitle" selected="selected">По алфавиту</option>
	                <option [!selected? &param=`sort` &znach=`asc`!] class="asc" value="asc">По возрастанию цены</option>
	                <option [!selected? &param=`sort` &znach=`desc`!] class="desc" value="desc">По убыванию цены</option>							
                            <option [!selected? &param=`sort` &znach=`random`!] class="random" value="random" >Без сортировки</option>													
	            </select>
	        </div>
	    </div>
	</div>
</form>

Сниппет selected задает выбранному option атрибут selected

<?php
if ($_REQUEST[$param]==$znach) {
  echo "selected"; 
}
?>

Вызов Ditto

[!Ditto? 
&tpl=`catalog-product_tpl-grid` 
&filter=`template,9,1` 
&extenders=`request` 
&depth=`4` 
&parents=`[*id*]` 
&display=`all` 
&paginate=`1` 
&display=`20` 
&orderBy=`[[filter_order]]`
!]


Сниппет filter_order

<?php
$output = 'pagetitle ASC';
$sort = $_GET['sort'];
$sort = strip_tags($sort);
$sort = htmlspecialchars($sort);
$sort = mysql_escape_string($sort);
  
switch($sort) {
	case 'asc' : $output = 'price ASC'; break;
	case 'desc' : $output = 'price DESC'; break;
	case 'pagetitle' : $output = 'pagetitle ASC'; break;
	case 'random' : $output = ''; break;
}
return $output;
?>