public function CartBlock::build in Ubercart 8.4

Builds and returns the renderable array for this block plugin.

If a block should not be rendered because it has no content, then this method must also ensure to return no content: it must then only return an empty array, or an empty array with #cache set (with cacheability metadata indicating the circumstances for it being empty).

Return value

array A renderable array representing the content of the block.

Overrides BlockPluginInterface::build

See also

\Drupal\block\BlockViewBuilder

File

uc_cart/src/Plugin/Block/CartBlock.php, line 146

Class

CartBlock

Provides the shopping cart block.

Namespace

Drupal\uc_cart\Plugin\Block

Code

public function build() {
  $cart = $this->cartManager
    ->get();
  $product_count = count($cart
    ->getContents());
  $build = [];

  // Fill build array with block contents if there are items in the cart or
  // if the block is configured to display when empty.
  if ($product_count || !$this->configuration['hide_empty']) {
    $items = [];
    $item_count = 0;
    $total = 0;
    if ($product_count) {

      /** @var \Drupal\uc_cart\CartItemInterface $item */
      foreach ($cart
        ->getContents() as $item) {
        $display_item = $this->moduleHandler
          ->invoke($item->data->module, 'uc_cart_display', [
          $item,
        ]);
        if (count(Element::children($display_item))) {
          $items[] = [
            'nid' => $display_item['nid']['#value'],
            'qty' => $display_item['qty']['#default_value'],
            // $display_item['title'] can be either #markup or
            // #type => 'link', so render it.
            'title' => drupal_render($display_item['title']),
            'price' => $display_item['#total'],
            'desc' => isset($display_item['description']['#markup']) ? $display_item['description']['#markup'] : FALSE,
          ];
          $total += $display_item['#total'];
          $item_count += $display_item['qty']['#default_value'];
        }
      }
    }

    // Build the cart links.
    $summary_links['view-cart'] = [
      'title' => $this
        ->t('View cart'),
      'url' => Url::fromRoute('uc_cart.cart'),
      'attributes' => [
        'rel' => [
          'nofollow',
        ],
      ],
    ];

    // Only add the checkout link if checkout is enabled.
    if ($this->configFactory
      ->get('uc_cart.settings')
      ->get('checkout_enabled')) {
      $summary_links['checkout'] = [
        'title' => $this
          ->t('Checkout'),
        'url' => Url::fromRoute('uc_cart.checkout'),
        'attributes' => [
          'rel' => [
            'nofollow',
          ],
        ],
      ];
    }
    $build['block'] = [
      '#theme' => 'uc_cart_block',
      '#items' => $items,
      '#item_count' => $item_count,
      '#total' => $total,
      '#summary_links' => $summary_links,
      '#collapsed' => $this->configuration['collapsed'],
    ];

    // Add the cart block CSS.
    $build['#attached']['library'][] = 'uc_cart/uc_cart.block.styles';

    // If the block is collapsible, add the appropriate JS.
    if ($this->configuration['collapsible']) {
      $build['#attached']['library'][] = 'uc_cart/uc_cart.block.scripts';
    }
  }
  else {

    // Build array remains empty - display nothing if the block is set to hide
    // on empty and there are no items in the cart.
  }
  return $build;
}