FieldAttachStorageTestCase::testFieldHasData in core/modules/field/tests/field.test

Test field_has_data().

field_config_delete in core/modules/field/field.module

Implements hook_config_delete().

field_config_delete_validate in core/modules/field/field.module

Implements hook_config_delete_validate().

field_ui_field_edit_form in core/modules/field_ui/field_ui.admin.inc

Form constructor for the field instance settings form.

field_ui_field_settings_form in core/modules/field_ui/field_ui.admin.inc

Form constructor for the field settings edit page.

field_update_field in core/modules/field/field.crud.inc

Updates a field.