Version 1

[yaffs-website] / web / core / modules / options / src / Plugin / Field / FieldFormatter / OptionsDefaultFormatter.php

diff --git a/web/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsDefaultFormatter.php b/web/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsDefaultFormatter.php
new file mode 100644 (file)
index 0000000..ba1ba9c
--- /dev/null
+++ b/web/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsDefaultFormatter.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace Drupal\options\Plugin\Field\FieldFormatter;
+
+use Drupal\Core\Field\AllowedTagsXssTrait;
+use Drupal\Core\Field\FieldFilteredMarkup;
+use Drupal\Core\Field\FormatterBase;
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Form\OptGroup;
+
+/**
+ * Plugin implementation of the 'list_default' formatter.
+ *
+ * @FieldFormatter(
+ *   id = "list_default",
+ *   label = @Translation("Default"),
+ *   field_types = {
+ *     "list_integer",
+ *     "list_float",
+ *     "list_string",
+ *   }
+ * )
+ */
+class OptionsDefaultFormatter extends FormatterBase {
+
+  use AllowedTagsXssTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function viewElements(FieldItemListInterface $items, $langcode) {
+    $elements = [];
+
+    // Only collect allowed options if there are actually items to display.
+    if ($items->count()) {
+      $provider = $items->getFieldDefinition()
+        ->getFieldStorageDefinition()
+        ->getOptionsProvider('value', $items->getEntity());
+      // Flatten the possible options, to support opt groups.
+      $options = OptGroup::flattenOptions($provider->getPossibleOptions());
+
+      foreach ($items as $delta => $item) {
+        $value = $item->value;
+        // If the stored value is in the current set of allowed values, display
+        // the associated label, otherwise just display the raw value.
+        $output = isset($options[$value]) ? $options[$value] : $value;
+        $elements[$delta] = [
+          '#markup' => $output,
+          '#allowed_tags' => FieldFilteredMarkup::allowedTags(),
+        ];
+      }
+    }
+
+    return $elements;
+  }
+
+}