'textfield', '#title' => t('Realname pattern'), '#default_value' => variable_get('realname_pattern', '[user:name-raw]'), '#element_validate' => array('token_element_validate'), '#token_types' => array('user'), '#min_tokens' => 1, '#required' => TRUE, '#maxlength' => 256, ); // Add the token tree UI. $form['token_help'] = array( '#theme' => 'token_tree', '#token_types' => array('user'), '#global_types' => FALSE, ); $form['#submit'][] = 'realname_settings_form_submit'; return system_settings_form($form); } /** * Form validation handler for realname_settings_form(). * * @see realname_settings_form_submit() */ function realname_settings_form_validate($form, &$form_state) { if (strpos($form_state['values']['realname_pattern'], '[user:name]') !== FALSE) { form_set_error('realname_pattern', t('The [user:name] token cannot be used as it will cause recursion.')); } } /** * Form submission handler for realname_settings_form(). * * @see realname_settings_form_validate() */ function realname_settings_form_submit($form, $form_state) { if ($form['realname_pattern']['#default_value'] != $form_state['values']['realname_pattern']) { // Only clear the realname cache if the pattern was changed. realname_delete_all(); } }