Version 1

[yaffs-website] / web / core / modules / views / src / Plugin / views / field / EntityLabel.php

diff --git a/web/core/modules/views/src/Plugin/views/field/EntityLabel.php b/web/core/modules/views/src/Plugin/views/field/EntityLabel.php
new file mode 100644 (file)
index 0000000..86ccd05
--- /dev/null
+++ b/web/core/modules/views/src/Plugin/views/field/EntityLabel.php
@@ -0,0 +1,143 @@
+<?php
+
+namespace Drupal\views\Plugin\views\field;
+
+use Drupal\Core\Entity\EntityMalformedException;
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\Entity\Exception\UndefinedLinkTemplateException;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\ResultRow;
+use Drupal\views\ViewExecutable;
+use Drupal\views\Plugin\views\display\DisplayPluginBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Field handler to display entity label optionally linked to entity page.
+ *
+ * @ViewsField("entity_label")
+ */
+class EntityLabel extends FieldPluginBase {
+
+  /**
+   * Array of entities that reference to file.
+   *
+   * @var array
+   */
+  protected $loadedReferencers = [];
+
+  /**
+   * EntityManager class.
+   *
+   * @var \Drupal\Core\Entity\EntityManagerInterface
+   */
+  protected $entityManager;
+
+  /**
+   * Constructs a EntityLabel object.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Entity\EntityManagerInterface $manager
+   *   EntityManager that is stored internally and used to load nodes.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityManagerInterface $manager) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+    $this->entityManager = $manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('entity.manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function init(ViewExecutable $view, DisplayPluginBase $display, array &$options = NULL) {
+    parent::init($view, $display, $options);
+    $this->additional_fields[$this->definition['entity type field']] = $this->definition['entity type field'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function defineOptions() {
+    $options = parent::defineOptions();
+    $options['link_to_entity'] = ['default' => FALSE];
+    return $options;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildOptionsForm(&$form, FormStateInterface $form_state) {
+    $form['link_to_entity'] = [
+      '#title' => $this->t('Link to entity'),
+      '#description' => $this->t('Make entity label a link to entity page.'),
+      '#type' => 'checkbox',
+      '#default_value' => !empty($this->options['link_to_entity']),
+    ];
+    parent::buildOptionsForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function render(ResultRow $values) {
+    $type = $this->getValue($values, $this->definition['entity type field']);
+    $value = $this->getValue($values);
+
+    if (empty($this->loadedReferencers[$type][$value])) {
+      return;
+    }
+
+    /** @var $entity \Drupal\Core\Entity\EntityInterface */
+    $entity = $this->loadedReferencers[$type][$value];
+
+    if (!empty($this->options['link_to_entity'])) {
+      try {
+        $this->options['alter']['url'] = $entity->toUrl();
+        $this->options['alter']['make_link'] = TRUE;
+      }
+      catch (UndefinedLinkTemplateException $e) {
+        $this->options['alter']['make_link'] = FALSE;
+      }
+      catch (EntityMalformedException $e) {
+        $this->options['alter']['make_link'] = FALSE;
+      }
+    }
+
+    return $this->sanitizeValue($entity->label());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function preRender(&$values) {
+    parent::preRender($values);
+
+    $entity_ids_per_type = [];
+    foreach ($values as $value) {
+      if ($type = $this->getValue($value, 'type')) {
+        $entity_ids_per_type[$type][] = $this->getValue($value);
+      }
+    }
+
+    foreach ($entity_ids_per_type as $type => $ids) {
+      $this->loadedReferencers[$type] = $this->entityManager->getStorage($type)->loadMultiple($ids);
+    }
+  }
+
+}