1 list.module | list_field_update_forbid($field, $prior_field, $has_data) |
Implements hook_field_update_forbid().
File
- core/
modules/ field/ modules/ list/ list.module, line 400 - Defines list field types that can be used with the Options module.
Code
function list_field_update_forbid($field, $prior_field, $has_data) {
if ($field['module'] == 'list' && $has_data) {
// Forbid any update that removes allowed values with actual data.
$lost_keys = array_diff(array_keys($prior_field['settings']['allowed_values']), array_keys($field['settings']['allowed_values']));
if (_list_values_in_use($field, $lost_keys)) {
throw new FieldUpdateForbiddenException(t('A list field (@field_name) with existing data cannot have its keys changed.', array('@field_name' => $field['field_name'])));
}
}
}