EntityReferenceBrowserWidget::formElementEntities()

Complexity

Conditions	20
Paths	79

Size

Total Lines	82
Code Lines	41

Duplication

Lines	8
Ratio	9.76 %

Importance

Changes

0

<?php
  protected function formElementEntities(FieldItemListInterface $items, array $element, FormStateInterface $form_state) {
    $entities = [];
    $entity_type = $this->fieldDefinition->getFieldStorageDefinition()->getSetting('target_type');
    $entity_storage = $this->entityTypeManager->getStorage($entity_type);

    // Find IDs from target_id element (it stores selected entities in form).
    // This was added to help solve a really edge casey bug in IEF.
    if (($target_id_entities = $this->getEntitiesByTargetId($element, $form_state)) !== FALSE) {
      return $target_id_entities;
    }

    // Determine if we're submitting and if submit came from this widget.
    $is_relevant_submit = FALSE;
    if (($trigger = $form_state->getTriggeringElement())) {
      // Can be triggered by hidden target_id element or "Remove" button.
      if (end($trigger['#parents']) === 'target_id' || (end($trigger['#parents']) === 'remove_button')) {
        $is_relevant_submit = TRUE;

        // In case there are more instances of this widget on the same page we
        // need to check if submit came from this instance.
        $field_name_key = end($trigger['#parents']) === 'target_id' ? 2 : static::$deleteDepth + 1;
        $field_name_key = count($trigger['#parents']) - $field_name_key;
        $is_relevant_submit &= ($trigger['#parents'][$field_name_key] === $this->fieldDefinition->getName()) &&
          (array_slice($trigger['#parents'], 0, count($element['#field_parents'])) == $element['#field_parents']);
      }
    };

    if ($is_relevant_submit) {
      // Submit was triggered by hidden "target_id" element when entities were
      // added via entity browser.
      if (!empty($trigger['#ajax']['event']) && $trigger['#ajax']['event'] == 'entity_browser_value_updated') {

This code seems to be duplicated across your project.

        $parents = $trigger['#parents'];
      }
      // Submit was triggered by one of the "Remove" buttons. We need to walk
      // few levels up to read value of "target_id" element.
      elseif ($trigger['#type'] == 'submit' && strpos($trigger['#name'], $this->fieldDefinition->getName() . '_remove_') === 0) {
        $parents = array_merge(array_slice($trigger['#parents'], 0, -static::$deleteDepth), ['target_id']);
      }

      if (isset($parents) && $value = $form_state->getValue($parents)) {
        $entities = EntityBrowserElement::processEntityIds($value);
        return $entities;
      }
      return $entities;
    }
    // IDs from a previous request might be saved in the form state.
    elseif ($form_state->has([
      'entity_browser_widget',
      $this->getFormStateKey($items),
    ])
    ) {
      $stored_ids = $form_state->get([
        'entity_browser_widget',
        $this->getFormStateKey($items),
      ]);
      $indexed_entities = $entity_storage->loadMultiple($stored_ids);

      // Selection can contain same entity multiple times. Since loadMultiple()
      // returns unique list of entities, it's necessary to recreate list of
      // entities in order to preserve selection of duplicated entities.
      foreach ($stored_ids as $entity_id) {
        if (isset($indexed_entities[$entity_id])) {
          $entities[] = $indexed_entities[$entity_id];
        }
      }
      return $entities;
    }
    // We are loading for for the first time so we need to load any existing
    // values that might already exist on the entity. Also, remove any leftover
    // data from removed entity references.
    else {
      foreach ($items as $item) {
        if (isset($item->target_id)) {
          $entity = $entity_storage->load($item->target_id);
          if (!empty($entity)) {
            $entities[] = $entity;
          }
        }
      }
      return $entities;
    }
  }