149 lines
4.4 KiB
PHP
149 lines
4.4 KiB
PHP
<?php
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namespace Drupal\node;
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use Drupal\Core\Entity\EntityInterface;
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use Drupal\Core\Entity\EntityViewBuilder;
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/**
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* View builder handler for nodes.
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*/
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class NodeViewBuilder extends EntityViewBuilder {
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/**
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* {@inheritdoc}
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*/
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public function buildComponents(array &$build, array $entities, array $displays, $view_mode) {
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/** @var \Drupal\node\NodeInterface[] $entities */
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if (empty($entities)) {
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return;
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}
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parent::buildComponents($build, $entities, $displays, $view_mode);
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foreach ($entities as $id => $entity) {
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$bundle = $entity->bundle();
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$display = $displays[$bundle];
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if ($display->getComponent('links')) {
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$build[$id]['links'] = [
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'#lazy_builder' => [
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get_called_class() . '::renderLinks', [
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$entity->id(),
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$view_mode,
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$entity->language()->getId(),
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!empty($entity->in_preview),
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$entity->isDefaultRevision() ? NULL : $entity->getLoadedRevisionId(),
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],
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],
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];
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}
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// Add Language field text element to node render array.
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if ($display->getComponent('langcode')) {
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$build[$id]['langcode'] = [
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'#type' => 'item',
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'#title' => t('Language'),
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'#markup' => $entity->language()->getName(),
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'#prefix' => '<div id="field-language-display">',
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'#suffix' => '</div>',
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];
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}
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}
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}
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/**
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* {@inheritdoc}
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*/
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protected function getBuildDefaults(EntityInterface $entity, $view_mode) {
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$defaults = parent::getBuildDefaults($entity, $view_mode);
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// Don't cache nodes that are in 'preview' mode.
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if (isset($defaults['#cache']) && isset($entity->in_preview)) {
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unset($defaults['#cache']);
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}
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return $defaults;
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}
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/**
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* #lazy_builder callback; builds a node's links.
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*
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* @param string $node_entity_id
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* The node entity ID.
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* @param string $view_mode
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* The view mode in which the node entity is being viewed.
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* @param string $langcode
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* The language in which the node entity is being viewed.
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* @param bool $is_in_preview
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* Whether the node is currently being previewed.
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* @param $revision_id
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* (optional) The identifier of the node revision to be loaded. If none
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* is provided, the default revision will be loaded.
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*
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* @return array
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* A renderable array representing the node links.
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*/
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public static function renderLinks($node_entity_id, $view_mode, $langcode, $is_in_preview, $revision_id = NULL) {
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$links = [
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'#theme' => 'links__node',
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'#pre_render' => ['drupal_pre_render_links'],
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'#attributes' => ['class' => ['links', 'inline']],
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];
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if (!$is_in_preview) {
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$storage = \Drupal::entityTypeManager()->getStorage('node');
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/** @var \Drupal\node\NodeInterface $revision */
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$revision = !isset($revision_id) ? $storage->load($node_entity_id) : $storage->loadRevision($revision_id);
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$entity = $revision->getTranslation($langcode);
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$links['node'] = static::buildLinks($entity, $view_mode);
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// Allow other modules to alter the node links.
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$hook_context = [
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'view_mode' => $view_mode,
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'langcode' => $langcode,
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];
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\Drupal::moduleHandler()->alter('node_links', $links, $entity, $hook_context);
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}
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return $links;
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}
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/**
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* Build the default links (Read more) for a node.
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*
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* @param \Drupal\node\NodeInterface $entity
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* The node object.
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* @param string $view_mode
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* A view mode identifier.
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*
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* @return array
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* An array that can be processed by drupal_pre_render_links().
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*/
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protected static function buildLinks(NodeInterface $entity, $view_mode) {
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$links = [];
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// Always display a read more link on teasers because we have no way
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// to know when a teaser view is different than a full view.
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if ($view_mode == 'teaser') {
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$node_title_stripped = strip_tags($entity->label());
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$links['node-readmore'] = [
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'title' => t('Read more<span class="visually-hidden"> about @title</span>', [
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'@title' => $node_title_stripped,
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]),
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'url' => $entity->urlInfo(),
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'language' => $entity->language(),
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'attributes' => [
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'rel' => 'tag',
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'title' => $node_title_stripped,
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],
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];
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}
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return [
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'#theme' => 'links__node__node',
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'#links' => $links,
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'#attributes' => ['class' => ['links', 'inline']],
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];
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}
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}
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