ATUALIZAR TDBUniqueSearch

.php

<?php

class FormDynamicSessionCriteriaView extends TPage
{
    private $form;

    function __construct()
    {
        parent::__construct();
        
        $this->form = new BootstrapFormBuilder('form_hierarchical');
        $this->form->setFormTitle(_t('Hierarchical combo'));
        
        $city_id = new TDBCombo('city_id', 'samples', 'City', 'id', 'name', 'name');
        
        $filter = new TCriteria;
        $filter->add(new TFilter('city_id', '=', "'{session.city_id_filter}'"));
        
        $customer_id = new TDBUniqueSearch('customer_id', 'samples', 'Customer', 'id', 'name', 'name', $filter);
        
        $city_id->enableSearch();
        $customer_id->setMinLength(1);
        
        $this->form->addFields([new TLabel('City')], [$city_id]);
        $this->form->addFields([new TLabel('Customer')], [$customer_id]);
        
        $city_id->setChangeAction(new TAction(array($this, 'onCityChange')));
        
        $vbox = new TVBox;
        $vbox->style='width:100%';
        $vbox->add(new TXMLBreadCrumb('menu.xml', __CLASS__));
        $vbox->add($this->form);

        parent::add($vbox);
    }

    public static function onCityChange($param)
    {
        if (!empty($param['city_id']))
        {
            TSession::setValue('city_id_filter', $param['city_id']);
        }
    }
}