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class EntityReferenceAutocompleteWidget in Zircon Profile 8

Same name and namespace in other branches
  1. 8.0 core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/EntityReferenceAutocompleteWidget.php \Drupal\Core\Field\Plugin\Field\FieldWidget\EntityReferenceAutocompleteWidget

Plugin implementation of the 'entity_reference_autocomplete' widget.

Plugin annotation


@FieldWidget(
  id = "entity_reference_autocomplete",
  label = @Translation("Autocomplete"),
  description = @Translation("An autocomplete text field."),
  field_types = {
    "entity_reference"
  }
)

Hierarchy

Expanded class hierarchy of EntityReferenceAutocompleteWidget

File

core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/EntityReferenceAutocompleteWidget.php, line 28
Contains \Drupal\Core\Field\Plugin\Field\FieldWidget\EntityReferenceAutocompleteWidget.

Namespace

Drupal\Core\Field\Plugin\Field\FieldWidget
View source 
class EntityReferenceAutocompleteWidget extends WidgetBase {

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    return array(
      'match_operator' => 'CONTAINS',
      'size' => '60',
      'placeholder' => '',
    ) + parent::defaultSettings();
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $element['match_operator'] = array(
      '#type' => 'radios',
      '#title' => t('Autocomplete matching'),
      '#default_value' => $this
        ->getSetting('match_operator'),
      '#options' => $this
        ->getMatchOperatorOptions(),
      '#description' => t('Select the method used to collect autocomplete suggestions. Note that <em>Contains</em> can cause performance issues on sites with thousands of entities.'),
    );
    $element['size'] = array(
      '#type' => 'number',
      '#title' => t('Size of textfield'),
      '#default_value' => $this
        ->getSetting('size'),
      '#min' => 1,
      '#required' => TRUE,
    );
    $element['placeholder'] = array(
      '#type' => 'textfield',
      '#title' => t('Placeholder'),
      '#default_value' => $this
        ->getSetting('placeholder'),
      '#description' => t('Text that will be shown inside the field until a value is entered. This hint is usually a sample value or a brief description of the expected format.'),
    );
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = array();
    $operators = $this
      ->getMatchOperatorOptions();
    $summary[] = t('Autocomplete matching: @match_operator', array(
      '@match_operator' => $operators[$this
        ->getSetting('match_operator')],
    ));
    $summary[] = t('Textfield size: @size', array(
      '@size' => $this
        ->getSetting('size'),
    ));
    $placeholder = $this
      ->getSetting('placeholder');
    if (!empty($placeholder)) {
      $summary[] = t('Placeholder: @placeholder', array(
        '@placeholder' => $placeholder,
      ));
    }
    else {
      $summary[] = t('No placeholder');
    }
    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
    $entity = $items
      ->getEntity();
    $referenced_entities = $items
      ->referencedEntities();
    $element += array(
      '#type' => 'entity_autocomplete',
      '#target_type' => $this
        ->getFieldSetting('target_type'),
      '#selection_handler' => $this
        ->getFieldSetting('handler'),
      '#selection_settings' => $this
        ->getFieldSetting('handler_settings'),
      // Entity reference field items are handling validation themselves via
      // the 'ValidReference' constraint.
      '#validate_reference' => FALSE,
      '#maxlength' => 1024,
      '#default_value' => isset($referenced_entities[$delta]) ? $referenced_entities[$delta] : NULL,
      '#size' => $this
        ->getSetting('size'),
      '#placeholder' => $this
        ->getSetting('placeholder'),
    );
    if ($this
      ->getSelectionHandlerSetting('auto_create')) {
      $element['#autocreate'] = array(
        'bundle' => $this
          ->getAutocreateBundle(),
        'uid' => $entity instanceof EntityOwnerInterface ? $entity
          ->getOwnerId() : \Drupal::currentUser()
          ->id(),
      );
    }
    return array(
      'target_id' => $element,
    );
  }

  /**
   * {@inheritdoc}
   */
  public function errorElement(array $element, ConstraintViolationInterface $error, array $form, FormStateInterface $form_state) {
    return isset($element['target_id']) ? $element['target_id'] : FALSE;
  }

  /**
   * {@inheritdoc}
   */
  public function massageFormValues(array $values, array $form, FormStateInterface $form_state) {
    foreach ($values as $key => $value) {

      // The entity_autocomplete form element returns an array when an entity
      // was "autocreated", so we need to move it up a level.
      if (is_array($value['target_id'])) {
        unset($values[$key]['target_id']);
        $values[$key] += $value['target_id'];
      }
    }
    return $values;
  }

  /**
   * Returns the name of the bundle which will be used for autocreated entities.
   *
   * @return string
   *   The bundle name.
   */
  protected function getAutocreateBundle() {
    $bundle = NULL;
    if ($this
      ->getSelectionHandlerSetting('auto_create')) {

      // If the 'target_bundles' setting is restricted to a single choice, we
      // can use that.
      if (($target_bundles = $this
        ->getSelectionHandlerSetting('target_bundles')) && count($target_bundles) == 1) {
        $bundle = reset($target_bundles);
      }
      else {

        // @todo Expose a proper UI for choosing the bundle for autocreated
        // entities in https://www.drupal.org/node/2412569.
        $bundles = entity_get_bundles($this
          ->getFieldSetting('target_type'));
        $bundle = key($bundles);
      }
    }
    return $bundle;
  }

  /**
   * Returns the value of a setting for the entity reference selection handler.
   *
   * @param string $setting_name
   *   The setting name.
   *
   * @return mixed
   *   The setting value.
   */
  protected function getSelectionHandlerSetting($setting_name) {
    $settings = $this
      ->getFieldSetting('handler_settings');
    return isset($settings[$setting_name]) ? $settings[$setting_name] : NULL;
  }

  /**
   * Returns the options for the match operator.
   *
   * @return array
   *   List of options.
   */
  protected function getMatchOperatorOptions() {
    return [
      'STARTS_WITH' => t('Starts with'),
      'CONTAINS' => t('Contains'),
    ];
  }

}

Members

Namesort descending Modifiers Type Description Overrides
AllowedTagsXssTrait::allowedTags public function Returns a list of tags allowed by AllowedTagsXssTrait::fieldFilterXss().
AllowedTagsXssTrait::displayAllowedTags public function Returns a human-readable list of allowed tags for display in help texts.
AllowedTagsXssTrait::fieldFilterXss public function Filters an HTML string to prevent XSS vulnerabilities.
DependencySerializationTrait::$_serviceIds protected property An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep public function 1
DependencySerializationTrait::__wakeup public function 2
EntityReferenceAutocompleteWidget::defaultSettings public static function Defines the default settings for this plugin. Overrides PluginSettingsBase::defaultSettings
EntityReferenceAutocompleteWidget::errorElement public function Assigns a field-level validation error to the right widget sub-element. Overrides WidgetBase::errorElement
EntityReferenceAutocompleteWidget::formElement public function Returns the form for a single field widget. Overrides WidgetInterface::formElement 1
EntityReferenceAutocompleteWidget::getAutocreateBundle protected function Returns the name of the bundle which will be used for autocreated entities.
EntityReferenceAutocompleteWidget::getMatchOperatorOptions protected function Returns the options for the match operator.
EntityReferenceAutocompleteWidget::getSelectionHandlerSetting protected function Returns the value of a setting for the entity reference selection handler.
EntityReferenceAutocompleteWidget::massageFormValues public function Massages the form values into the format expected for field values. Overrides WidgetBase::massageFormValues 1
EntityReferenceAutocompleteWidget::settingsForm public function Returns a form to configure settings for the widget. Overrides WidgetBase::settingsForm
EntityReferenceAutocompleteWidget::settingsSummary public function Returns a short summary for the current widget settings. Overrides WidgetBase::settingsSummary
PluginBase::$configuration protected property Configuration information passed into the plugin. 2
PluginBase::$pluginDefinition protected property The plugin implementation definition.
PluginBase::$pluginId protected property The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR constant A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId public function Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId public function Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition public function Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginSettingsBase::$defaultSettingsMerged protected property Whether default settings have been merged into the current $settings.
PluginSettingsBase::$thirdPartySettings protected property The plugin settings injected by third party modules.
PluginSettingsBase::calculateDependencies public function Calculates dependencies for the configured plugin. Overrides DependentPluginInterface::calculateDependencies 1
PluginSettingsBase::getSetting public function Returns the value of a setting, or its default value if absent. Overrides PluginSettingsInterface::getSetting
PluginSettingsBase::getSettings public function Returns the array of settings, including defaults for missing settings. Overrides PluginSettingsInterface::getSettings
PluginSettingsBase::getThirdPartyProviders public function Gets the list of third parties that store information. Overrides ThirdPartySettingsInterface::getThirdPartyProviders
PluginSettingsBase::getThirdPartySetting public function Gets the value of a third-party setting. Overrides ThirdPartySettingsInterface::getThirdPartySetting
PluginSettingsBase::getThirdPartySettings public function Gets all third-party settings of a given module. Overrides ThirdPartySettingsInterface::getThirdPartySettings
PluginSettingsBase::mergeDefaults protected function Merges default settings values into $settings.
PluginSettingsBase::onDependencyRemoval public function Informs the plugin that some configuration it depends on will be deleted. Overrides PluginSettingsInterface::onDependencyRemoval 1
PluginSettingsBase::setSetting public function Sets the value of a setting for the plugin. Overrides PluginSettingsInterface::setSetting
PluginSettingsBase::setSettings public function Sets the settings for the plugin. Overrides PluginSettingsInterface::setSettings
PluginSettingsBase::setThirdPartySetting public function Sets the value of a third-party setting. Overrides ThirdPartySettingsInterface::setThirdPartySetting
PluginSettingsBase::unsetThirdPartySetting public function Unsets a third-party setting. Overrides ThirdPartySettingsInterface::unsetThirdPartySetting
StringTranslationTrait::$stringTranslation protected property The string translation service.
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.
WidgetBase::$fieldDefinition protected property The field definition.
WidgetBase::$settings protected property The widget settings. Overrides PluginSettingsBase::$settings
WidgetBase::addMoreAjax public static function Ajax callback for the "Add another item" button.
WidgetBase::addMoreSubmit public static function Submission handler for the "Add another item" button.
WidgetBase::afterBuild public static function After-build handler for field elements in a form.
WidgetBase::extractFormValues public function Extracts field values from submitted form values. Overrides WidgetBaseInterface::extractFormValues
WidgetBase::flagErrors public function Reports field-level validation errors against actual form elements. Overrides WidgetBaseInterface::flagErrors 2
WidgetBase::form public function Creates a form element for a field. Overrides WidgetBaseInterface::form
WidgetBase::formMultipleElements protected function Special handling to create form elements for multiple values. 1
WidgetBase::formSingleElement protected function Generates the form element for a single copy of the widget.
WidgetBase::getFieldSetting protected function Returns the value of a field setting.
WidgetBase::getFieldSettings protected function Returns the array of field settings.
WidgetBase::getWidgetState public static function Retrieves processing information about the widget from $form_state. Overrides WidgetBaseInterface::getWidgetState
WidgetBase::getWidgetStateParents protected static function Returns the location of processing information within $form_state.
WidgetBase::handlesMultipleValues protected function Returns whether the widget handles multiple values.
WidgetBase::isApplicable public static function Returns if the widget can be used for the provided field. Overrides WidgetInterface::isApplicable 1
WidgetBase::isDefaultValueWidget protected function Returns whether the widget used for default value form.
WidgetBase::setWidgetState public static function Stores processing information about the widget in $form_state. Overrides WidgetBaseInterface::setWidgetState
WidgetBase::__construct public function Constructs a WidgetBase object. Overrides PluginBase::__construct 3