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I'm using Drupal 7 and the Bootstrap theme. In the template.php file, I am successfully theming the primary menu (main menu) to enable extra list styles with the following code.

function MYTHEME_menu_tree__primary($variables) {
  return '<ul class="custom-style">' . $variables['tree'] . '</ul>';
}

I would also like to theme a new menu (menu-banner), but I can't access it as expected, with the following code.

function MYTHEME_menu_tree__menu_banner($variables) {
  return '<ul class="custom-style">' . $variables['tree'] . '</ul>';
}

The new menu is successfully defined in MYTHEME_preprocess_page() in the template.php file.

$menu = menu_navigation_links('menu-banner');
$vars['banner_nav'] = theme('links__menu_banner', array('links' => $menu));

I'm able to render it as banner_nav in the page templates.

Is there something I'm missing, or is there something specific to Bootstrap that is different from what reported from theme_menu_tree() documentation?

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This isn't related to Bootstrap. In your preprocessor you're using theme_links, which is unrelated to menus. Your "menu" isn't being output as a menu at all.

If page preprocessing is necessary, you can try:

function THEMENAME_preprocess_page(&$vars) {
  $menu = menu_tree_all_data('menu-banner');
  $vars['banner_nav'] = menu_tree_output($menu);
}

Or you can render the menu block (these are automatically generated if you have the Blocks module enabled):

function THEMENAME_preprocess_page(&$vars) {
  $block = block_load('menu', 'menu-banner');
  $vars['banner_nav'] = _block_get_renderable_array(_block_render_blocks(array($block)));
}

In page.tpl.php:

<?php print render($banner_nav); ?>

Either will work.

If you don't need to preprocess the menu, you can simply position it via the Blocks admin UI.

I hope that helps!

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  • Thanks!, I'll give it a go. In the meantime, I was able to get it working using the secondary navigation instead of a custom menu, which is good sort of. My main motivation with this is to get to a place where I can re-use classes instead of having a ziggurat of rules for similarly styled things like menus that are mostly the same design.
    – david w.
    May 23 '15 at 0:47

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