How are the current cart items rendered on the frontend cart page?

dmitry_fedyuk · April 22, 2016, 10:57am

magento/magento2/blob/958164/app/code/Magento/Checkout/view/frontend/layout/checkout_cart_index.xml#L14-L17


<referenceContainer name="content">
    <block class="Magento\Checkout\Block\Cart" name="checkout.cart" template="cart.phtml" cacheable="false">
        <container name="checkout.cart.items" as="with-items">
            <container name="checkout.cart.container" htmlTag="div" htmlClass="cart-container" before="-">

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/view/frontend/layout/checkout_cart_index.xml#L183-L186


<block class="Magento\Checkout\Block\Cart" name="checkout.cart.form" as="cart-items" template="cart/form.phtml" after="cart.summary">
    <block class="Magento\Framework\View\Element\RendererList" name="checkout.cart.item.renderers" as="renderer.list"/>
    <block class="Magento\Framework\View\Element\Text\ListText" name="checkout.cart.order.actions"/>
</block>

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/view/frontend/templates/cart/form.phtml#L20-L36


<table id="shopping-cart-table"
       class="cart items data table"
       data-mage-init='{"shoppingCart":{"emptyCartButton": "action.clear",
       "updateCartActionContainer": "#update_cart_action_container"}}'>
    <caption role="heading" aria-level="2" class="table-caption"><?php /* @escapeNotVerified */ echo __('Shopping Cart Items') ?></caption>
    <thead>
        <tr>
            <th class="col item" scope="col"><span><?php /* @escapeNotVerified */ echo __('Item') ?></span></th>
            <th class="col price" scope="col"><span><?php /* @escapeNotVerified */ echo __('Price') ?></span></th>
            <th class="col qty" scope="col"><span><?php /* @escapeNotVerified */ echo __('Qty') ?></span></th>
            <th class="col subtotal" scope="col"><span><?php /* @escapeNotVerified */ echo __('Subtotal') ?></span></th>
        </tr>
    </thead>
    <?php foreach ($block->getItems() as $_item): ?>
        <?php echo $block->getItemHtml($_item) ?>
    <?php endforeach ?>
</table>

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/Block/Cart.php#L213-L225


/**
 * Return customer quote items
 *
 * @return array
 */
public function getItems()
{
    if ($this->getCustomItems()) {
        return $this->getCustomItems();
    }


    return parent::getItems();
}

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/Block/Cart/AbstractCart.php#L114-L123


/**
 * Get all cart items
 *
 * @return array
 * @codeCoverageIgnore
 */
public function getItems()
{
    return $this->getQuote()->getAllVisibleItems();
}

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/Block/Cart/AbstractCart.php#L101-L112


/**
 * Get active quote
 *
 * @return Quote
 */
public function getQuote()
{
    if (null === $this->_quote) {
        $this->_quote = $this->_checkoutSession->getQuote();
    }
    return $this->_quote;
}

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/Model/Session.php#L200-L207


/**
 * Get checkout quote instance by current session
 *
 * @return Quote
 * @SuppressWarnings(PHPMD.CyclomaticComplexity)
 * @SuppressWarnings(PHPMD.NPathComplexity)
 */
public function getQuote()

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/Block/Cart/AbstractCart.php#L125-L135


/**
 * Get item row html
 *
 * @param   \Magento\Quote\Model\Quote\Item $item
 * @return  string
 */
public function getItemHtml(\Magento\Quote\Model\Quote\Item $item)
{
    $renderer = $this->getItemRenderer($item->getProductType())->setItem($item);
    return $renderer->toHtml();
}

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/Block/Cart/AbstractCart.php#L80-L99


/**
 * Retrieve item renderer block
 *
 * @param string|null $type
 * @return \Magento\Framework\View\Element\Template
 * @throws \RuntimeException
 */
public function getItemRenderer($type = null)
{
    if ($type === null) {
        $type = self::DEFAULT_TYPE;
    }
    $rendererList = $this->_getRendererList();
    if (!$rendererList) {
        throw new \RuntimeException('Renderer list for block "' . $this->getNameInLayout() . '" is not defined');
    }
    $overriddenTemplates = $this->getOverriddenTemplates() ?: [];
    $template = isset($overriddenTemplates[$type]) ? $overriddenTemplates[$type] : $this->getRendererTemplate();
    return $rendererList->getRenderer($type, self::DEFAULT_TYPE, $template);
}

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/Block/Cart/AbstractCart.php#L15-L18


/**
 * Block alias fallback
 */
const DEFAULT_TYPE = 'default';

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/Block/Cart/AbstractCart.php#L66-L78


/**
 * Retrieve renderer list
 *
 * @return \Magento\Framework\View\Element\RendererList
 */
protected function _getRendererList()
{
    return $this->getRendererListName() ? $this->getLayout()->getBlock(
        $this->getRendererListName()
    ) : $this->getChildBlock(
        'renderer.list'
    );
}

github.com

magento/magento2/blob/958164/app/code/Magento/Checkout/view/frontend/layout/checkout_cart_index.xml#L184-L184


<block class="Magento\Framework\View\Element\RendererList" name="checkout.cart.item.renderers" as="renderer.list"/>

dmitry_fedyuk · April 22, 2016, 11:19am