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<?php |
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namespace Drupal\Driver\Fields\Drupal8; |
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/** |
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* Entity Reference field handler for Drupal 8. |
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*/ |
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class EntityReferenceHandler extends AbstractHandler { |
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/** |
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* {@inheritdoc} |
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*/ |
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public function expand($values) { |
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$return = array(); |
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$entity_type_id = $this->fieldInfo->getSetting('target_type'); |
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$entity_definition = \Drupal::entityManager()->getDefinition($entity_type_id); |
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// Determine label field key. |
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if ($entity_type_id !== 'user') { |
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$label_key = $entity_definition->getKey('label'); |
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} |
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else { |
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// Entity Definition->getKey('label') returns false for users. |
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$label_key = 'name'; |
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} |
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if (!$label_key && $entity_type_id == 'user') { |
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$label_key = 'name'; |
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} |
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// Determine target bundle restrictions. |
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$target_bundle_key = NULL; |
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if ($target_bundles = $this->getTargetBundles()) { |
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$target_bundle_key = $entity_definition->getKey('bundle'); |
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} |
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foreach ((array) $values as $value) { |
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$query = \Drupal::entityQuery($entity_type_id)->condition($label_key, $value); |
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if ($target_bundles && $target_bundle_key) { |
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$query->condition($target_bundle_key, $target_bundles, 'IN'); |
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} |
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if ($entities = $query->execute()) { |
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$return[] = array_shift($entities); |
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} |
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else { |
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throw new \Exception(sprintf("No entity '%s' of type '%s' exists.", $value, $entity_type_id)); |
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} |
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} |
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return $return; |
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} |
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/** |
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* Retrieves bundles for which the field is configured to reference. |
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* |
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* @return mixed |
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* Array of bundle names, or NULL if not able to determine bundles. |
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*/ |
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protected function getTargetBundles() { |
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$settings = $this->fieldConfig->getSettings(); |
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if (!empty($settings['handler_settings']['target_bundles'])) { |
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return $settings['handler_settings']['target_bundles']; |
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} |
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} |
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} |
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jhedstrom /
DrupalDriver
