Preprocess variables for page.tpl.php

Most themes utilize their own copy of page.tpl.php. The default is located inside "modules/system/page.tpl.php". Look in there for the full list of variables.

Uses the arg() function to generate a series of page template suggestions based on the current path.

Any changes to variables in this preprocessor should also be changed inside template_preprocess_maintenance_page() to keep all of them consistent.

See also

drupal_render_page()

template_process_page()

page.tpl.php

File

includes/theme.inc, line 2545

The theme system, which controls the output of Drupal.

Code

function template_preprocess_page(&$variables) {
  // Move some variables to the top level for themer convenience and template cleanliness.
  $variables['show_messages'] = $variables['page']['#show_messages'];

  foreach (system_region_list($GLOBALS['theme']) as $region_key => $region_name) {
    if (!isset($variables['page'][$region_key])) {
      $variables['page'][$region_key] = array();
    }
  }

  // Set up layout variable.
  $variables['layout'] = 'none';
  if (!empty($variables['page']['sidebar_first'])) {
    $variables['layout'] = 'first';
  }
  if (!empty($variables['page']['sidebar_second'])) {
    $variables['layout'] = ($variables['layout'] == 'first') ? 'both' : 'second';
  }

  $variables['base_path'] = base_path();
  $variables['front_page'] = url();
  $variables['feed_icons'] = drupal_get_feeds();
  $variables['language'] = $GLOBALS['language'];
  $variables['language']->dir = $GLOBALS['language']->direction ? 'rtl' : 'ltr';
  $variables['logo'] = theme_get_setting('logo');
  $variables['main_menu'] = theme_get_setting('toggle_main_menu') ? menu_main_menu() : array();
  $variables['secondary_menu'] = theme_get_setting('toggle_secondary_menu') ? menu_secondary_menu() : array();
  $variables['action_links'] = menu_local_actions();
  $variables['site_name'] = (theme_get_setting('toggle_name') ? filter_xss_admin(variable_get('site_name', 'Drupal')) : '');
  $variables['site_slogan'] = (theme_get_setting('toggle_slogan') ? filter_xss_admin(variable_get('site_slogan', '')) : '');
  $variables['tabs'] = menu_local_tabs();

  if ($node = menu_get_object()) {
    $variables['node'] = $node;
  }

  // Populate the page template suggestions.
  if ($suggestions = theme_get_suggestions(arg(), 'page')) {
    $variables['theme_hook_suggestions'] = $suggestions;
  }
}