navigation404.module in 404 Navigation 7

File

navigation404.module

<?php

define('NAVIGATION404_PAGE', 'navigation404');

/**
 * Implements hook_menu().
 */
function navigation404_menu() {
  $items[NAVIGATION404_PAGE] = array(
    'title' => 'Page not found',
    'access callback' => TRUE,
    'page callback' => 'navigation404_404_page',
    'type' => MENU_CALLBACK,
  );
  return $items;
}

/**
 * Our custom menu callback that returns Drupal's standard 404 message.
 */
function navigation404_404_page() {
  drupal_set_title(t('Page not found'));
  return t('The requested page could not be found.');
}

/**
 * Implements hook_form_alter().
 */
function navigation404_form_system_site_information_settings_alter(&$form, $form_state) {

  // Since we don't care what site_404 is set to, let the user set it if they want.
  if ($form['error_page']['site_404']['#default_value'] == NAVIGATION404_PAGE) {
    $form['error_page']['site_404']['#default_value'] = '';
  }

  // Insert our submit handler first.
  array_unshift($form['#submit'], 'navigation404_site_404_submit');
}

/**
 * Submit callback for system_site_information_settings form.
 */
function navigation404_site_404_submit($form, &$form_state) {

  // Make sure site_404 is not empty.
  if ($form_state['values']['site_404'] == '') {
    $form_state['values']['site_404'] = NAVIGATION404_PAGE;
  }
}

Functions

Name	Description
navigation404_404_page	Our custom menu callback that returns Drupal's standard 404 message.
navigation404_form_system_site_information_settings_alter	Implements hook_form_alter().
navigation404_menu	Implements hook_menu().
navigation404_site_404_submit	Submit callback for system_site_information_settings form.

Constants

Name	Description
NAVIGATION404_PAGE