function entityreference_field_widget_form in Entity reference 7

Implements hook_field_widget_form().

File

./entityreference.module, line 840

Entityreference primary module file.

Code

function entityreference_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {

  // Ensure that the entity target type exists before displaying the widget.
  $entity_info = entity_get_info($field['settings']['target_type']);
  if (empty($entity_info)) {
    return;
  }
  $entity_type = $instance['entity_type'];
  $entity = isset($element['#entity']) ? $element['#entity'] : NULL;
  $handler = entityreference_get_selection_handler($field, $instance, $entity_type, $entity);
  if ($instance['widget']['type'] == 'entityreference_autocomplete' || $instance['widget']['type'] == 'entityreference_autocomplete_tags') {
    if ($instance['widget']['type'] == 'entityreference_autocomplete') {

      // We let the Field API handles multiple values for us, only take
      // care of the one matching our delta.
      if (isset($items[$delta])) {
        $items = array(
          $items[$delta],
        );
      }
      else {
        $items = array();
      }
    }
    $entity_ids = array();
    $entity_labels = array();

    // Build an array of entities ID.
    foreach ($items as $item) {
      if (isset($item['target_id'])) {
        $entity_ids[] = $item['target_id'];
      }
    }

    // Load those entities and loop through them to extract their labels.
    $entities = entity_load($field['settings']['target_type'], $entity_ids);
    foreach ($entities as $entity_id => $entity_item) {
      $label = $handler
        ->getLabel($entity_item);
      $key = "{$label} ({$entity_id})";

      // Labels containing commas or quotes must be wrapped in quotes.
      if (strpos($key, ',') !== FALSE || strpos($key, '"') !== FALSE) {
        $key = '"' . str_replace('"', '""', $key) . '"';
      }
      $entity_labels[] = $key;
    }

    // Prepare the autocomplete path.
    if (!empty($instance['widget']['settings']['path'])) {
      $autocomplete_path = $instance['widget']['settings']['path'];
    }
    else {
      $autocomplete_path = $instance['widget']['type'] == 'entityreference_autocomplete' ? 'entityreference/autocomplete/single' : 'entityreference/autocomplete/tags';
    }
    $autocomplete_path .= '/' . $field['field_name'] . '/' . $instance['entity_type'] . '/' . $instance['bundle'] . '/';

    // Use <NULL> as a placeholder in the URL when we don't have an entity.
    // Most webservers collapse two consecutive slashes.
    $id = 'NULL';
    if ($entity) {
      list($eid) = entity_extract_ids($entity_type, $entity);
      if ($eid) {
        $id = $eid;
      }
    }
    $autocomplete_path .= $id;
    if ($instance['widget']['type'] == 'entityreference_autocomplete') {
      $element += array(
        '#type' => 'textfield',
        '#maxlength' => 1024,
        '#default_value' => implode(', ', $entity_labels),
        '#autocomplete_path' => $autocomplete_path,
        '#size' => $instance['widget']['settings']['size'],
        '#element_validate' => array(
          '_entityreference_autocomplete_validate',
        ),
      );
      return array(
        'target_id' => $element,
      );
    }
    else {
      $element += array(
        '#type' => 'textfield',
        '#maxlength' => 1024,
        '#default_value' => implode(', ', $entity_labels),
        '#autocomplete_path' => $autocomplete_path,
        '#size' => $instance['widget']['settings']['size'],
        '#element_validate' => array(
          '_entityreference_autocomplete_tags_validate',
        ),
      );
      return $element;
    }
  }
}