class AutocompleteWidget in Entity reference 8

Plugin implementation of the 'entityreference autocomplete' widget.

@todo: Check if the following statement is still correct The autocomplete path doesn't have a default here, because it's not the the two widgets, and the Field API doesn't update default settings when the widget changes.

Plugin annotation

@Plugin(
  id = "entityreference_autocomplete",
  module = "entityreference",
  label = @Translation("Autocomplete"),
  description = @Translation("An autocomplete text field."),
  field_types = {
    "entityreference"
  },
  settings = {
    "match_operator" = "CONTAINS",
    "size" = 60,
    "path" = ""
  }
)

Hierarchy

• class \Drupal\entityreference\Plugin\field\widget\AutocompleteWidgetBase extends \Drupal\field\Plugin\Type\Widget\WidgetBase
  • class \Drupal\entityreference\Plugin\field\widget\AutocompleteWidget

File

lib/Drupal/entityreference/Plugin/field/widget/AutocompleteWidget.php, line 39

Definition of Drupal\entityreference\Plugin\field\widget\AutocompleteWidget.

Namespace

Drupal\entityreference\Plugin\field\widget

class AutocompleteWidget extends AutocompleteWidgetBase {

  /**
   * Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
   */
  public function formElement(array $items, $delta, array $element, $langcode, array &$form, array &$form_state) {

    // 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();
    }
    $element = $this
      ->prepareElement($items, $delta, $element, $langcode, $form, $form_state, 'entityreference/autocomplete/single');
    return array(
      'target_id' => $element,
    );
  }

  /**
   * Implements Drupal\entityreference\Plugin\field\widget\DefaultAutocompleteWidget::elementValidate()
   */
  public function elementValidate($element, &$form_state) {

    // If a value was entered into the autocomplete.
    $value = '';
    if (!empty($element['#value'])) {

      // Take "label (entity id)', match the id from parenthesis.
      if (preg_match("/.+\\((\\d+)\\)/", $element['#value'], $matches)) {
        $value = $matches[1];
      }
      else {

        // Try to get a match from the input string when the user didn't use the
        // autocomplete but filled in a value manually.
        $field = field_info_field($element['#field_name']);
        $instance = field_info_instance($element['#entity_type'], $element['#field_name'], $element['#bundle']);
        $handler = entityreference_get_selection_handler($field, $instance);
        $value = $handler
          ->validateAutocompleteInput($element['#value'], $element, $form_state, $form);
      }
    }
    form_set_value($element, $value, $form_state);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
AutocompleteWidget::elementValidate	public	function	Implements Drupal\entityreference\Plugin\field\widget\DefaultAutocompleteWidget::elementValidate() Overrides AutocompleteWidgetBase::elementValidate
AutocompleteWidget::formElement	public	function	Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement(). Overrides AutocompleteWidgetBase::formElement
AutocompleteWidgetBase::errorElement	public	function	Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::errorElement().
AutocompleteWidgetBase::getLabels	protected	function	Get the entity labels.
AutocompleteWidgetBase::prepareElement	protected	function	Prepapre the element.
AutocompleteWidgetBase::settingsForm	public	function	Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::settingsForm().