Bootstrap 3 formuláře do Nette - namespace doplň podle podřeby

Bootstrap3Form.php

<?php

use Nette\ComponentModel\IContainer;
use Nette\Forms\Controls;

class Bootstrap3Form extends \Nette\Application\UI\Form
{
    public function __construct(IContainer $parent = NULL, $name = NULL)
    {
        $this->setRenderer(new Bootstrap3FormRenderer());
    }
}

Bootstrap3FormRenderer.php

<?php

use Nette\Forms\Form;
use Nette\Forms\Rendering\DefaultFormRenderer;
use Nette\Forms\Controls;

class Bootstrap3FormRenderer extends DefaultFormRenderer
{
    public function __construct()
    {
        $this->wrappers['controls']['container'] = NULL;
        $this->wrappers['pair']['container'] = 'div class=form-group';
        $this->wrappers['pair']['.error'] = 'has-error';
        $this->wrappers['control']['container'] = 'div class=col-sm-9';
        $this->wrappers['label']['container'] = 'div class="col-sm-3 control-label"';
        $this->wrappers['control']['description'] = 'span class=help-block';
        $this->wrappers['control']['errorcontainer'] = 'span class=help-block';
    }

    public function render(Form $form, $mode = NULL)
    {
        $form->getElementPrototype()->class('form-horizontal');
        foreach ($form->getControls() as $control) {
            if ($control instanceof Controls\Button) {
                $control->getControlPrototype()->addClass(empty($usedPrimary) ? 'btn btn-primary' : 'btn btn-default');
                $usedPrimary = TRUE;
            } elseif ($control instanceof Controls\TextBase || $control instanceof Controls\SelectBox || $control instanceof Controls\MultiSelectBox) {
                $control->getControlPrototype()->addClass('form-control');
            } elseif ($control instanceof Controls\Checkbox || $control instanceof Controls\CheckboxList || $control instanceof Controls\RadioList) {
                $control->getSeparatorPrototype()->setName('div')->addClass($control->getControlPrototype()->type);
            }
        }

        return parent::render($form, $mode);
    }
}