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class ReferenceWidget in Select (or other) 8.3

Plugin implementation of the 'select_or_other_reference' widget.

Plugin annotation


@FieldWidget(
  id = "select_or_other_reference",
  label = @Translation("Select or Other"),
  field_types = {
    "entity_reference"
  },
  multiple_values = TRUE
)

Hierarchy

Expanded class hierarchy of ReferenceWidget

1 file declares its use of ReferenceWidget
ReferenceWidgetTest.php in Tests/src/Unit/ReferenceWidgetTest.php

File

src/Plugin/Field/FieldWidget/EntityReference/ReferenceWidget.php, line 31
Contains \Drupal\select_or_other\Plugin\Field\FieldWidget\EntityReference\ReferenceWidget.

Namespace

Drupal\select_or_other\Plugin\Field\FieldWidget\EntityReference
View source 
class ReferenceWidget extends SelectOrOtherWidgetBase {

  /**
   * Helper method which prepares element values for validation.
   *
   * EntityAutocomplete::validateEntityAutocomplete expects a string when
   * validating taxonomy terms.
   *
   * @param array $element
   *   The element to prepare.
   */
  protected static function prepareElementValuesForValidation(array &$element) {
    if ($element['#tags']) {
      $element['#value'] = Tags::implode($element['#value']);
    }
  }

  /**
   * Retrieves the entityStorage object
   *
   * @return \Drupal\Core\Entity\EntityStorageInterface
   *   EntityStorage for entity types that can be referenced by this widget.
   *
   * @codeCoverageIgnore
   *   Ignore this method because if ::getFieldSetting() or entityTypeManager
   *   does not return the expected result, we've got other problems on our hands.
   */
  protected function getEntityStorage() {
    $target_type = $this
      ->getFieldSetting('target_type');
    return \Drupal::entityTypeManager()
      ->getStorage($target_type);
  }

  /**
   * Retrieves the key used to indicate a bundle for the entity type.
   *
   * @return string
   *   The key used to indicate a bundle for the entity type referenced by this
   *   widget's field.
   *
   * @codeCoverageIgnore
   *   Ignore this method because if any of the called core functions does not
   *   return the expected result, we've got other problems on our hands.
   */
  protected function getBundleKey() {
    $entity_keys = $this
      ->getEntityStorage()
      ->getEntityType()
      ->get('entity_keys');
    return $entity_keys['bundle'];
  }

  /**
   * {@inheritdoc}
   */
  protected function getOptions() {
    $options = [];

    // Prepare properties to use for loading.
    $entityStorage = $this
      ->getEntityStorage();
    $bundle_key = $this
      ->getBundleKey();
    $target_bundles = $this
      ->getSelectionHandlerSetting('target_bundles');
    $properties = [
      $bundle_key => $target_bundles,
    ];
    $entities = $entityStorage
      ->loadByProperties($properties);

    // Prepare the options.
    foreach ($entities as $entity) {
      $options["{$entity->label()} ({$entity->id()})"] = $entity
        ->label();
    }
    return $options;
  }

  /**
   * {@inheritdoc}
   */
  protected function prepareSelectedOptions(array $options) {
    $prepared_options = [];
    $entities = $this
      ->getEntityStorage()
      ->loadMultiple($options);
    foreach ($entities as $entity) {
      $prepared_options[] = "{$entity->label()} ({$entity->id()})";
    }
    return $prepared_options;
  }

  /**
   * {@inheritdoc}
   */
  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
    $element = parent::formElement($items, $delta, $element, $form, $form_state);
    $entity = $items
      ->getEntity();
    $element = $element + [
      '#target_type' => $this
        ->getFieldSetting('target_type'),
      '#selection_handler' => $this
        ->getFieldSetting('handler'),
      '#selection_settings' => $this
        ->getFieldSetting('handler_settings'),
      '#autocreate' => [
        'bundle' => $this
          ->getAutocreateBundle(),
        'uid' => $entity instanceof EntityOwnerInterface ? $entity
          ->getOwnerId() : \Drupal::currentUser()
          ->id(),
      ],
      '#validate_reference' => TRUE,
      '#tags' => $this
        ->getFieldSetting('target_type') === 'taxonomy_term',
      '#merged_values' => TRUE,
    ];
    $element['#element_validate'] = [
      [
        get_class($this),
        'validateReferenceWidget',
      ],
    ];
    return $element;
  }

  /**
   * Returns the value of a setting for the entity reference selection handler.
   *
   * @todo This is shamelessly copied from EntityAutocomplete. We should
   * probably file a core issue to turn this into a trait. The same goes for
   * $this::getAutoCreateBundle()
   *
   * @param string $setting_name
   *   The setting name.
   *
   * @return mixed
   *   The setting value.
   *
   * @codeCoverageIgnore
   *   Ignore this function because it is a straight copy->paste.
   */
  protected function getSelectionHandlerSetting($setting_name) {
    $settings = $this
      ->getFieldSetting('handler_settings');
    return isset($settings[$setting_name]) ? $settings[$setting_name] : NULL;
  }

  /**
   * Returns the name of the bundle which will be used for autocreated entities.
   *
   * @todo This is shamelessly copied from EntityAutocomplete. We should
   * probably file a core issue to turn this into a trait. The same goes for
   * $this::getSelectionHandlerSetting()
   *
   * @return string
   *   The bundle name.
   *
   * @codeCoverageIgnore
   *   Ignore this function because it is a straight copy->paste.
   */
  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.
        $bundles = \Drupal::entityManager()
          ->getBundleInfo($this
          ->getFieldSetting('target_type'));
        $bundle = key($bundles);
      }
    }
    return $bundle;
  }

  /**
   * Form element validation handler for select_or_other_reference elements.
   *
   * @codeCoverageIgnore
   *   Ignore
   */
  public static function validateReferenceWidget(array &$element, FormStateInterface $form_state, array &$complete_form) {
    self::prepareElementValuesForValidation($element);
    EntityAutocomplete::validateEntityAutocomplete($element, $form_state, $complete_form);
  }

  /**
   * {@inheritdoc}
   */
  public static function isApplicable(FieldDefinitionInterface $field_definition) {
    $options = $field_definition
      ->getSettings();
    $handler = \Drupal::service('plugin.manager.entity_reference_selection')
      ->getInstance($options);
    return $handler instanceof SelectionWithAutocreateInterface && $options['handler_settings']['auto_create'];
  }

}

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::$_entityStorages protected property An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_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
MessengerTrait::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
PluginBase::$configuration protected property Configuration information passed into the plugin. 1
PluginBase::$pluginDefinition protected property The plugin implementation definition. 1
PluginBase::$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 3
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable public function Determines if the plugin is configurable.
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 6
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 3
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
ReferenceWidget::formElement public function Returns the form for a single field widget. Overrides SelectOrOtherWidgetBase::formElement
ReferenceWidget::getAutocreateBundle protected function Returns the name of the bundle which will be used for autocreated entities.
ReferenceWidget::getBundleKey protected function Retrieves the key used to indicate a bundle for the entity type.
ReferenceWidget::getEntityStorage protected function Retrieves the entityStorage object
ReferenceWidget::getOptions protected function Returns the array of options for the widget. Overrides SelectOrOtherWidgetBase::getOptions
ReferenceWidget::getSelectionHandlerSetting protected function Returns the value of a setting for the entity reference selection handler.
ReferenceWidget::isApplicable public static function Returns if the widget can be used for the provided field. Overrides WidgetBase::isApplicable
ReferenceWidget::prepareElementValuesForValidation protected static function Helper method which prepares element values for validation.
ReferenceWidget::prepareSelectedOptions protected function Prepares selected options for comparison to the available options. Overrides SelectOrOtherWidgetBase::prepareSelectedOptions
ReferenceWidget::validateReferenceWidget public static function Form element validation handler for select_or_other_reference elements.
SelectOrOtherWidgetBase::$has_value private property
SelectOrOtherWidgetBase::defaultSettings public static function Defines the default settings for this plugin. Overrides PluginSettingsBase::defaultSettings
SelectOrOtherWidgetBase::flattenOptions protected function Flattens an array of allowed values.
SelectOrOtherWidgetBase::getColumn protected function Helper method to determine the identifying column for the field.
SelectOrOtherWidgetBase::getEmptyOption protected function Returns the empty option to add to the list of options, if any. 1
SelectOrOtherWidgetBase::getSelectedOptions protected function Determines selected options from the incoming field values.
SelectOrOtherWidgetBase::hasValue public function Return whether $items of formElement method contains any data.
SelectOrOtherWidgetBase::isMultiple protected function Helper method to determine if the field supports multiple values.
SelectOrOtherWidgetBase::isRequired protected function Helper method to determine if the field is required.
SelectOrOtherWidgetBase::sanitizeLabel protected static function Sanitizes a string label to display as an option. 1
SelectOrOtherWidgetBase::selectElementTypeOptions private function Returns the types of select elements available for selection.
SelectOrOtherWidgetBase::SELECT_OR_OTHER_EMPTY_NONE constant Identifies a 'None' option.
SelectOrOtherWidgetBase::SELECT_OR_OTHER_EMPTY_SELECT constant Identifies a 'Select a value' option.
SelectOrOtherWidgetBase::settingsForm public function Returns a form to configure settings for the widget. Overrides WidgetBase::settingsForm 1
SelectOrOtherWidgetBase::settingsSummary public function Returns a short summary for the current widget settings. Overrides WidgetBase::settingsSummary
SelectOrOtherWidgetBase::supportsGroups protected function Indicates whether the widgets support optgroups. 1
SelectOrOtherWidgetBase::validateElement public static function Form validation handler for widget elements.
StringTranslationTrait::$stringTranslation protected property The string translation service. 1
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::create public static function Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create 5
WidgetBase::errorElement public function Assigns a field-level validation error to the right widget sub-element. Overrides WidgetInterface::errorElement 8
WidgetBase::extractFormValues public function Extracts field values from submitted form values. Overrides WidgetBaseInterface::extractFormValues 2
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 3
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::getFilteredDescription protected function Returns the filtered field description.
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::isDefaultValueWidget protected function Returns whether the widget used for default value form.
WidgetBase::massageFormValues public function Massages the form values into the format expected for field values. Overrides WidgetInterface::massageFormValues 7
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 5