Отправка формы по ajax

 
        if ($is_submitted){
 
            // Проверяем правильность заполнения
            $errors = $form->validate($this,  $data);
 
            if (!$errors){
 
                $data['items'] = explode(',', $data['items']);
                $content_model->moveContentItemsToCategory($ctype, $data['category_id'], $data['items'], $fields);
 
                $template->renderJSON(array(
                    'errors' => false,
                    'callback' => 'contentItemsMoved'
                ));
 
            }
 
            if ($errors){
                $template->renderJSON(array(
                    'errors' => true,
                ));
            }
 
            $this->halt();
 
        }
 

 
            if (result.errors == false) {
                if ("callback" in result) {
                    window[result.callback](form_data);
                }
                return;
            }
 
            if (typeof (result.errors) == 'object') {
 
                $('.field_error', form).removeClass('field_error');
                $('.error_text', form).remove();
 
                for (var field_id in result.errors) {
                    var id = field_id.replace(':', '_');
                    $('#f_' + id, form).addClass('field_error');
                    $('#f_' + id, form).prepend('<div class="error_text">' + result.errors[field_id] + '</div>');
                }
 
                icms.modal.resize();
 
                return;
 
            }
 

$errors = $form->validate($this, $data);
 
if ($errors){
    cmsTemplate::getInstance()->renderJSON(array(
        'errors' => $errors
    ));
}