hook_field_info_max_weight($entity_type, $bundle, $context, $context_mode) Returns the maximum weight for the

Define Field API widget types. Field API widgets specify how fields are displayed in edit forms. Fields of a given

Define Field API formatter types. Field API formatters specify how fields are displayed when the entity to which the field is attached is displayed

hook_field_purge_field_storage(\Drupal\field\Entity\FieldStorageConfig $field_storage) Acts when a field storage

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

hook_field_purge_field(\Drupal\field\Entity\FieldConfig $field) Acts when a field is being purged.

Defines field, widget, display formatter, and storage types. In the Field API, each field has a type, which determines what kind of data (integer

hook_field_formatter_info_alter(array &$info) Perform alterations on Field API formatter types.

hook_field_info_alter(&$info) Perform alterations on Field API field types.

hook_field_storage_config_update_forbid(\Drupal\field\FieldStorageConfigInterface $field_storage, \Drupal\field\FieldStorageConfigInterface $prior