constant OptionsWidgetBase::OPTIONS_EMPTY_NONE

Identifies a 'None' option.

File

drupal/core/modules/options/lib/Drupal/options/Plugin/field/widget/OptionsWidgetBase.php, line 21

Contains \Drupal\options\Plugin\field\widget\OptionsWidgetBase.

Class

OptionsWidgetBase

Base class for the 'options_*' widgets.

Namespace

Code

const OPTIONS_EMPTY_NONE = 'option_none';