Backend\Modules\Extensions\Actions\Themes::loadForm PHP Метод

    private function loadForm()
    {
        $this->frm = new BackendForm('settingsThemes');
        // fetch the themes
        $themes = $this->installedThemes;
        // set selected theme
        $selected = isset($_POST['installedThemes']) ? $_POST['installedThemes'] : $this->get('fork.settings')->get('Core', 'theme', 'core');
        // no themes found
        if (empty($themes)) {
            $this->redirect(BackendModel::createURLForAction('Edit') . '&id=' . $this->id . '&step=1&error=no-themes');
        }
        // loop the templates
        foreach ($themes as &$record) {
            // reformat custom variables
            $record['variables']['thumbnail'] = $record['thumbnail'];
            $record['variables']['installed'] = $record['installed'];
            $record['variables']['installable'] = $record['installable'];
            // set selected template
            if ($record['value'] == $selected) {
                $record['variables']['selected'] = true;
            }
            // unset the variable field
            unset($record['thumbnail'], $record['installed'], $record['installable']);
        }
        // templates
        $this->frm->addRadiobutton('installedThemes', $themes, $selected);
    }