class EntityReferenceLabelFormatter in Zircon Profile 8.0

Same name and namespace in other branches

8 core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceLabelFormatter.php \Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceLabelFormatter

Plugin implementation of the 'entity reference label' formatter.

Plugin annotation


@FieldFormatter(
  id = "entity_reference_label",
  label = @Translation("Label"),
  description = @Translation("Display the label of the referenced entities."),
  field_types = {
    "entity_reference"
  }
)

View source

class EntityReferenceLabelFormatter extends EntityReferenceFormatterBase {

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    return array(
      'link' => TRUE,
    ) + parent::defaultSettings();
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $elements['link'] = array(
      '#title' => t('Link label to the referenced entity'),
      '#type' => 'checkbox',
      '#default_value' => $this
        ->getSetting('link'),
    );
    return $elements;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = array();
    $summary[] = $this
      ->getSetting('link') ? t('Link to the referenced entity') : t('No link');
    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $elements = array();
    $output_as_link = $this
      ->getSetting('link');
    foreach ($this
      ->getEntitiesToView($items, $langcode) as $delta => $entity) {
      $label = $entity
        ->label();

      // If the link is to be displayed and the entity has a uri, display a
      // link.
      if ($output_as_link && !$entity
        ->isNew()) {
        try {
          $uri = $entity
            ->urlInfo();
        } catch (UndefinedLinkTemplateException $e) {

          // This exception is thrown by \Drupal\Core\Entity\Entity::urlInfo()
          // and it means that the entity type doesn't have a link template nor
          // a valid "uri_callback", so don't bother trying to output a link for
          // the rest of the referenced entities.
          $output_as_link = FALSE;
        }
      }
      if ($output_as_link && isset($uri) && !$entity
        ->isNew()) {
        $elements[$delta] = [
          '#type' => 'link',
          '#title' => $label,
          '#url' => $uri,
          '#options' => $uri
            ->getOptions(),
        ];
        if (!empty($items[$delta]->_attributes)) {
          $elements[$delta]['#options'] += array(
            'attributes' => array(),
          );
          $elements[$delta]['#options']['attributes'] += $items[$delta]->_attributes;

          // Unset field item attributes since they have been included in the
          // formatter output and shouldn't be rendered in the field template.
          unset($items[$delta]->_attributes);
        }
      }
      else {
        $elements[$delta] = array(
          '#plain_text' => $label,
        );
      }
      $elements[$delta]['#cache']['tags'] = $entity
        ->getCacheTags();
    }
    return $elements;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
EntityReferenceFormatterBase::checkAccess	protected	function	Checks access to the given entity.	2
EntityReferenceFormatterBase::getEntitiesToView	protected	function	Returns the referenced entities for display.	1
EntityReferenceFormatterBase::needsEntityLoad	protected	function	Returns whether the entity referenced by an item needs to be loaded.	1
EntityReferenceFormatterBase::prepareView	public	function	Loads the entities referenced in that field across all the entities being viewed. Overrides FormatterBase::prepareView
EntityReferenceFormatterBase::view	public	function	Overrides FormatterBase::view
EntityReferenceLabelFormatter::defaultSettings	public static	function	Defines the default settings for this plugin. Overrides PluginSettingsBase::defaultSettings
EntityReferenceLabelFormatter::settingsForm	public	function	Returns a form to configure settings for the formatter. Overrides FormatterBase::settingsForm
EntityReferenceLabelFormatter::settingsSummary	public	function	Returns a short summary for the current formatter settings. Overrides FormatterBase::settingsSummary
EntityReferenceLabelFormatter::viewElements	public	function	Builds a renderable array for a field value. Overrides FormatterInterface::viewElements
FormatterBase::$fieldDefinition	protected	property	The field definition.
FormatterBase::$label	protected	property	The label display setting.
FormatterBase::$settings	protected	property	The formatter settings. Overrides PluginSettingsBase::$settings
FormatterBase::$viewMode	protected	property	The view mode.
FormatterBase::getFieldSetting	protected	function	Returns the value of a field setting.
FormatterBase::getFieldSettings	protected	function	Returns the array of field settings.
FormatterBase::isApplicable	public static	function	Returns if the formatter can be used for the provided field. Overrides FormatterInterface::isApplicable	9
FormatterBase::__construct	public	function	Constructs a FormatterBase object. Overrides PluginBase::__construct	10
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.

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class EntityReferenceLabelFormatter in Zircon Profile 8.0

Plugin annotation

Hierarchy

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Namespace

Members

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