cart controller example

<?php

namespace Eshop\Controller;

class Cart extends \Controller\Base
{
    public function action_index()
    {
        // check if cart is empty
        if(\Eshop\Cart::total_qty() == 0)
        {
            $view = \View::forge('modules/eshop/cart-empty');

            // breadcrumb
            $view->breadcrumb = array(
                array(
                    'url'   => \Uri::current(),
                    'title' => __('eshop.cart.title_empty'),
                ),
            );

            return $view;
        }

        $view = \View::forge('modules/eshop/cart');

        // breadcrumb
        $view->breadcrumb = array(
            array(
                'url'   => \Uri::current(),
                'title' => __('eshop.cart.title').' - '.__('eshop.checkout.title'),
            ),
        );

        // load assets
        // forms
        \Asset::css('compiled/page-forms.css', array(), 'styles');
        \Asset::css('page-forms.less', array('rel' => 'stylesheet/less'), 'dev_styles');
        \Asset::js('pureSelect/pureSelect.jquery.js', array(), 'scripts');
        \Asset::js('forms.js', array(), 'scripts');
        // page
        \Asset::css('compiled/page-cart-checkout.css', array(), 'styles');
        \Asset::css('page-cart-checkout.less', array('rel' => 'stylesheet/less'), 'dev_styles');
        \Asset::js('eshop/cart/js/cart.js', array(), 'scripts');

        $view->items = \Eshop\Cart::items();

        return $view;
    }

    public function action_insert()
    {
        // reset messages
        \Messages::reset();

        if (\Input::method() == 'POST')
        {
            \Eshop\Cart::add(array(
                'name' => \Input::post('name'),
                'id'   => \Input::post('id'),
                'qty'  => \Input::post('qty', 1),
                'url'  => \Input::post('url'),
            ));

            \Messages::success(__('eshop.cart.item_was_inserted'));
        }

        \Response::redirect_back(\Router::get('eshop[cart]'));
    }

    public function action_remove($id)
    {
        // reset messages
        \Messages::reset();

        \Eshop\Cart::remove($id);

        \Messages::success(__('eshop.cart.item_was_removed'));

        if(\Input::is_ajax())
        {
            \Messages::reset();
            return $this->get_cart_contents();
        }

        \Response::redirect_back(\Router::get('eshop[cart]'));
    }

    public function action_update()
    {
        // reset messages
        \Messages::reset();

        if (\Input::method() == 'POST')
        {
            $qtys = \Input::post('qty');

            foreach($qtys as $id => $qty)
            {
                $item = \Eshop\Cart::item($id);
                $item->update('qty', $qty);
            }

            \Messages::success(__('eshop.cart.cart_was_updated'));
        }

        if(\Input::is_ajax())
        {
            \Messages::reset();
            return $this->get_cart_contents();
        }

        \Response::redirect_back(\Router::get('eshop[cart]'));
    }

    public function action_get_cart_header()
    {
        return \View::forge('modules/eshop/cart/header');
    }

    protected function get_cart_contents()
    {
        $view = \View::forge('modules/eshop/cart/contents');

        $view->items = \Eshop\Cart::items();

        return $view;
    }

}