_menu_build

• Drupal 4.6
• Drupal 4.7
• Drupal 5

Versions

4.6 – 5

_menu_build()

Build the menu by querying both modules and the database.

Code

includes/menu.inc, line 746

<?php
function _menu_build() {
  global $_menu;
  global $user;

  // Start from a clean slate.
  $_menu = array();

  $_menu['path index'] = array();
  // Set up items array, including default "Navigation" menu.
  $_menu['items'] = array(
    0 => array('path' => '', 'title' => '', 'type' => MENU_IS_ROOT),
    1 => array('pid' => 0, 'path' => '', 'title' => t('Navigation'), 'weight' => -50, 'access' => TRUE, 'type' => MENU_IS_ROOT | MENU_VISIBLE_IN_TREE)
    );

  // Build a sequential list of all menu items.
  $menu_item_list = module_invoke_all('menu', TRUE);

  // Menu items not in the DB get temporary negative IDs.
  $temp_mid = -1;

  foreach ($menu_item_list as $item) {
    if (!array_key_exists('path', $item)) {
      $item['path'] = '';
    }
    if (!array_key_exists('type', $item)) {
      $item['type'] = MENU_NORMAL_ITEM;
    }
    if (!array_key_exists('weight', $item)) {
      $item['weight'] = 0;
    }
    $mid = $temp_mid;
    if (array_key_exists($item['path'], $_menu['path index'])) {
      // Newer menu items overwrite older ones.
      unset($_menu['items'][$_menu['path index'][$item['path']]]);
    }
    $_menu['items'][$mid] = $item;
    $_menu['path index'][$item['path']] = $mid;

    $temp_mid--;
  }

  // Now fetch items from the DB, reassigning menu IDs as needed.
  if (module_exist('menu')) {
    $result = db_query('SELECT * FROM {menu} ORDER BY mid ASC');
    while ($item = db_fetch_object($result)) {
      // Handle URL aliases if entered in menu administration.
      $item->path = drupal_get_normal_path($item->path);
      if (array_key_exists($item->path, $_menu['path index'])) {
        // The path is already declared.
        $old_mid = $_menu['path index'][$item->path];
        if ($old_mid < 0) {
          // It had a temporary ID, so use a permanent one.
          $_menu['items'][$item->mid] = $_menu['items'][$old_mid];
          unset($_menu['items'][$old_mid]);
          $_menu['path index'][$item->path] = $item->mid;
        }
        else {
          // It has a permanent ID. Only replace with non-custom menu items.
          if ($item->type & MENU_CREATED_BY_ADMIN) {
            $_menu['items'][$item->mid] = array('path' => $item->path, 'callback' => '');
          }
          else {
            // Leave the old item around as a shortcut to this one.
            $_menu['items'][$item->mid] = $_menu['items'][$old_mid];
            $_menu['path index'][$item->path] = $item->mid;
          }
        }
      }
      else {
        // The path was not declared, so this is a custom item or an orphaned one.
        if ($item->type & MENU_CREATED_BY_ADMIN) {
          $_menu['items'][$item->mid] = array('path' => $item->path, 'callback' => '');
          if (!empty($item->path)) {
            $_menu['path index'][$item->path] = $item->mid;
          }
        }
      }

      // If the administrator has changed the item, reflect the change.
      if ($item->type & MENU_MODIFIED_BY_ADMIN) {
        $_menu['items'][$item->mid]['title'] = $item->title;
        $_menu['items'][$item->mid]['description'] = $item->description;
        $_menu['items'][$item->mid]['pid'] = $item->pid;
        $_menu['items'][$item->mid]['weight'] = $item->weight;
        $_menu['items'][$item->mid]['type'] = $item->type;
      }
    }
  }

  // Associate parent and child menu items.
  _menu_find_parents($_menu['items']);

  // Prepare to display trees to the user as required.
  _menu_build_visible_tree();
}
?>

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