function OptionsWidgetBase::getEmptyLabel

Returns the empty option label to add to the list of options, if any.

Return value

string|null Either a label of the empty option, or NULL.

1 call to OptionsWidgetBase::getEmptyLabel()

OptionsWidgetBase::getOptions in core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/OptionsWidgetBase.php: Returns the array of options for the widget.

2 methods override OptionsWidgetBase::getEmptyLabel()

OptionsButtonsWidget::getEmptyLabel in core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/OptionsButtonsWidget.php: Returns the empty option label to add to the list of options, if any.
OptionsSelectWidget::getEmptyLabel in core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/OptionsSelectWidget.php: Returns the empty option label to add to the list of options, if any.

File

core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/OptionsWidgetBase.php, line 225

Class

OptionsWidgetBase: Base class for the 'options_*' widgets.

Namespace

Drupal\Core\Field\Plugin\Field\FieldWidget

Code

protected function getEmptyLabel() {
}