Documentation & API reference
Functions
Primary tabs
Name |
Location | Description | Direct uses | Strings |
|---|---|---|---|---|
| hook_field_is_empty |
drupal/ |
Define what constitutes an empty item for a field type. | ||
| hook_field_language_alter |
drupal/ |
Perform alterations on field_language() values. | ||
| hook_field_load |
drupal/ |
Define custom load behavior for this module's field types. | ||
| hook_field_prepare_translation |
drupal/ |
Define custom prepare_translation behavior for this module's field types. | ||
| hook_field_prepare_view |
drupal/ |
Prepare field values prior to display. | ||
| hook_field_presave |
drupal/ |
Define custom presave behavior for this module's field types. | ||
| hook_field_purge_field |
drupal/ |
Acts when a field record is being purged. | ||
| hook_field_purge_instance |
drupal/ |
Acts when a field instance is being purged. | ||
| hook_field_read_field |
drupal/ |
Act on field records being read from the database. | ||
| hook_field_read_instance |
drupal/ |
Act on a field record being read from the database. | ||
| hook_field_schema |
drupal/ |
Define the Field API schema for a field structure. | ||
| hook_field_settings_form |
drupal/ |
Add settings to a field settings form. | ||
| hook_field_storage_create_field |
drupal/ |
Act on creation of a new field. | ||
| hook_field_storage_delete |
drupal/ |
Delete all field data for an entity. | ||
| hook_field_storage_delete_field |
drupal/ |
Act on deletion of a field. | ||
| hook_field_storage_delete_instance |
drupal/ |
Act on deletion of a field instance. | ||
| hook_field_storage_delete_revision |
drupal/ |
Delete a single revision of field data for an entity. | ||
| hook_field_storage_details |
drupal/ |
Reveal the internal details about the storage for a field. | ||
| hook_field_storage_details_alter |
drupal/ |
Perform alterations on Field API storage details. | ||
| hook_field_storage_info |
drupal/ |
Expose Field API storage backends. | ||
| hook_field_storage_info_alter |
drupal/ |
Perform alterations on Field API storage types. | ||
| hook_field_storage_load |
drupal/ |
Load field data for a set of entities. | ||
| hook_field_storage_pre_insert |
drupal/ |
Act before the storage backends insert field data. | ||
| hook_field_storage_pre_load |
drupal/ |
Act before the storage backends load field data. | ||
| hook_field_storage_pre_update |
drupal/ |
Act before the storage backends update field data. | ||
| hook_field_storage_purge |
drupal/ |
Remove field storage information when field data is purged. | ||
| hook_field_storage_purge_field |
drupal/ |
Remove field storage information when a field record is purged. | ||
| hook_field_storage_purge_field_instance |
drupal/ |
Remove field storage information when a field instance is purged. | ||
| hook_field_storage_query |
drupal/ |
Execute an EntityFieldQuery. | ||
| hook_field_storage_update_field |
drupal/ |
Update the storage information for a field. | ||
| hook_field_storage_write |
drupal/ |
Write field data for an entity. | ||
| hook_field_update |
drupal/ |
Define custom update behavior for this module's field data. | ||
| hook_field_update_field |
drupal/ |
Act on a field being updated. | ||
| hook_field_update_forbid |
drupal/ |
Forbid a field update from occurring. | ||
| hook_field_update_instance |
drupal/ |
Act on a field instance being updated. | ||
| hook_field_validate |
drupal/ |
Validate this module's field data. | ||
| hook_field_widget_error |
drupal/ |
Flag a field-level validation error. | ||
| hook_field_widget_form |
drupal/ |
Return the form for a single field widget. | ||
| hook_field_widget_form_alter |
drupal/ |
Alter forms for field widgets provided by other modules. | ||
| hook_field_widget_info |
drupal/ |
Expose Field API widget types. | ||
| hook_field_widget_info_alter |
drupal/ |
Perform alterations on Field API widget types. | ||
| hook_field_widget_properties_alter |
drupal/ |
Alters the widget properties of a field instance before it gets displayed. | ||
| hook_field_widget_properties_ENTITY_TYPE_alter |
drupal/ |
Alters the widget properties of a field instance on a given entity type before it gets displayed. | ||
| hook_field_widget_settings_form |
drupal/ |
Add settings to a widget settings form. | ||
| hook_field_widget_WIDGET_TYPE_form_alter |
drupal/ |
Alter widget forms for a specific widget provided by another module. | ||
| hook_filetransfer_info |
drupal/ |
Register information about FileTransfer classes provided by a module. | ||
| hook_filetransfer_info_alter |
drupal/ |
Alter the FileTransfer class registry. | ||
| hook_file_copy |
drupal/ |
Respond to a file that has been copied. | ||
| hook_file_delete |
drupal/ |
Respond to a file being deleted. | ||
| hook_file_download |
drupal/ |
Control access to private file downloads and specify HTTP headers. |