hook_field_widget_WIDGET_TYPE_form_alter(&$element, \Drupal\Core\Form\FormStateInterface $form_state, $context) Alter

public FieldStorageConfigStorage::loadByProperties(array

public FieldDefinitionListener::__construct(Entity

public FieldItemListInterface::preSave()

Base class for all exceptions thrown by the Entity Field API functions. This class has no functionality of its own other than allowing all Entity

An integer to determine the weight of this formatter relative to other formatter in the Field UI when selecting a formatter for a given field instance.

Provides an interface defining a field entity. Hierarchy interface \Drupal\Core\Config\Entity\

public static FieldItemInterface::generateSampleValue(FieldDefinitionInterface

public FieldDefinitionInterface::isRequired()

public FieldItemInterface::postSave($update)