Cannot find wp_nav_menu to set flags in nav menu

It seems you should check /includes/theme-menu.php for your menus first.

Cheers,
Dennis.

Here it is. What’s wrong with it? My web site is working fine…

<?php

/**

 * Defines the custom walker that adds description to the display of our Header Menu

*/

class Graphene_Description_Walker extends Walker_Nav_Menu {

	function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {

		global $wp_query;

		$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';

		$class_names = $value = '';

		$classes = empty( $item->classes ) ? array() : (array) $item->classes;

		$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item ) );

		$class_names = ' class="'. esc_attr( $class_names ) . '"';

		$output .= $indent . '<li id="menu-item-'. $item->ID . '"' . $value . $class_names .'>';

		$attributes  = ! empty( $item->attr_title ) ? ' title="'  . esc_attr( $item->attr_title ) .'"' : '';

		$attributes .= ! empty( $item->target )     ? ' target="' . esc_attr( $item->target     ) .'"' : '';

		$attributes .= ! empty( $item->xfn )        ? ' rel="'    . esc_attr( $item->xfn        ) .'"' : '';

		$attributes .= ! empty( $item->url )        ? ' href="'   . esc_attr( $item->url        ) .'"' : '';

		$prepend = '<strong>';

		$append = '</strong>';

		// Don't show description if it's longer than the length

		$desc_length = apply_filters( 'graphene_menu_desc_length', 50 );

		if ( strlen( $item->description ) > $desc_length)

			$description = '';

		else

			$description  = ! empty( $item->description ) ? '<span class="desc">'.esc_attr( $item->description ).'</span>' : '';

		if ( $depth != 0 )	{

				 $description = $append = $prepend = "";

		}

		$item_output = $args->before;

		$item_output .= '<a'. $attributes .'>';

		$item_output .= $args->link_before .$prepend.apply_filters( 'the_title', $item->title, $item->ID ).$append;

		$item_output .= $description.$args->link_after;

		$item_output .= '</a>';

		$item_output .= $args->after;

		$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );

	}

}

if ( ! function_exists( 'graphene_default_menu' ) ) :

/**

 * Define the callback menu, if there is no custom menu.

 * This menu automatically lists all Pages as menu items, including their direct

 * direct descendant, which will only be displayed for the current parent.

*/

function graphene_default_menu(){ 

	global $graphene_settings; 

	?>

	<ul id="header-menu" class="<?php echo graphene_get_menu_class('menu clearfix default-menu'); ?>">

		<?php if (get_option( 'show_on_front' ) == 'posts' ) : ?>

		<li <?php if ( is_single() || is_front_page() ) { echo 'class="current_page_item current-menu-item"'; } ?>>

			<a href="<?php echo get_home_url(); ?>">

				<?php if ( ! $graphene_settings['disable_menu_desc'] ) echo '<strong>'; ?>

				<?php _e( 'Home','graphene' ); ?>

				<?php if ( ! $graphene_settings['disable_menu_desc'] ) echo '</strong>'; ?>

				<?php if ( $graphene_settings['navmenu_home_desc']) {echo '<span class="desc">'.$graphene_settings['navmenu_home_desc'].'</span>';} ?>

			</a>

		</li>

		<?php endif; ?>

		<?php 

		$args = array( 

					'echo' 			=> 1,

					'depth' 		=> 5,

					'title_li' 		=> '',

					'walker' 		=> new Graphene_Walker_Page() 

				);

		add_filter( 'page_css_class', 'graphene_page_ancestor_class', 10, 4 );

		wp_list_pages( apply_filters( 'graphene_default_menu_args', $args ) );

		remove_filter( 'page_css_class', 'graphene_page_ancestor_class', 10, 4 );

		?>

	</ul>

	<?php

	do_action( 'graphene_default_menu' );

}

endif;

class Graphene_Walker_Page extends Walker_Page {

    /**

     * Code exact copied from: wp-includes\post-template.php >> Walker_Page::start_el() 

     * @since 2.1.0

     */

	function start_el( &$output, $page, $depth = 0, $args = array(), $current_page = 0 ) {

		global $graphene_settings;

		if ( $depth )

			$indent = str_repeat("\t", $depth);

		else

			$indent = '';

		extract($args, EXTR_SKIP);

		$css_class = array('page_item', 'page-item-'.$page->ID);

		if ( !empty($current_page) ) {

			$_current_page = get_post( $current_page );

			if ( in_array( $page->ID, $_current_page->ancestors ) )

				$css_class[] = 'current_page_ancestor';

			if ( $page->ID == $current_page )

				$css_class[] = 'current_page_item';

			elseif ( $_current_page && $page->ID == $_current_page->post_parent )

				$css_class[] = 'current_page_parent';

		} elseif ( $page->ID == get_option('page_for_posts') ) {

			$css_class[] = 'current_page_parent';

		}

		$css_class = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );

		$title = apply_filters( 'the_title', $page->post_title, $page->ID );

		if ( ! $depth && ! $graphene_settings['disable_menu_desc'] ){

			$title = '<strong>' . $title . '</strong>';

			$nav_desc = graphene_get_post_meta( $page->ID, 'nav_description' );

			$title .= ( $nav_desc ) ? '<span class="desc">' . $nav_desc . '</span>' : '';

		}

		$output .= $indent . '<li class="' . $css_class . '"><a href="' . get_permalink($page->ID) . '">' . $link_before . $title . $link_after . '</a>';

		if ( !empty($show_date) ) {

			if ( 'modified' == $show_date )

				$time = $page->post_modified;

			else

				$time = $page->post_date;

			$output .= " " . mysql2date($date_format, $time);

		}

		$output = apply_filters( 'graphene_page_description_walker_output', $output, $page, $depth, $args, $current_page );

	}

}

/*

 * Adds a menu-item-ancestor class to menu items with children when using custom menu

 *

 * @package Graphene

 * @since Graphene 1.8

*/

function graphene_menu_item_ancestor( $items ) {

    foreach ( $items as $item ) {

        if ( graphene_menu_has_sub( $item->ID, $items ) ) {

            $item->classes[] = 'menu-item-ancestor';

        }

    }

    return $items;    

}

add_filter( 'wp_nav_menu_objects', 'graphene_menu_item_ancestor' );

/**

 * Check if a Custom Menu menu item has sub-menu item

 *

 * @package Graphene

 * @since Graphene 1.8

 */

function graphene_menu_has_sub( $menu_item_id, &$items ) {

	foreach ( $items as $item ) {

		if ( $item->menu_item_parent && $item->menu_item_parent==$menu_item_id ) {

			return true;

		}

	}

	return false;

};

/*

 * Adds a menu-item-ancestor class to menu items with children when using default menu

 *

 * @package Graphene

 * @since Graphene 1.8

*/

function graphene_page_ancestor_class( $css_class, $page, $depth, $args ) {

    if ( ! empty( $args['has_children'] ) )

        $css_class[] = 'menu-item-ancestor';

	if ( array_search( 'current_page_ancestor', $css_class ) ) $css_class[] = 'current-menu-ancestor';

	if ( array_search( 'current_page_parent', $css_class ) ) $css_class[] = 'current-menu-ancestor';

	if ( array_search( 'current_page_item', $css_class ) ) $css_class[] = 'current-menu-item';

    return $css_class;

}

add_filter( 'page_css_class', 'graphene_page_ancestor_class', 10, 4 );

/**

 * Add additional navigation menu class

 */

function graphene_get_menu_class( $menu_class ){

    global $graphene_settings;

    // if the search box is located in the navigation bar restrict the width of the menu to 12 grid columns

    if ( ( $search_box_location = $graphene_settings['search_box_location']) && $search_box_location == 'nav_bar' ){

        $menu_class .= ' grid_12';

    }

    return apply_filters( 'graphene_menu_class', $menu_class );

}

There is nothing wrong I guess but it is a way to understand how your theme creates the menu. If you have no menu defined in your dashboard, you code use the action hook ‘graphene_default_menu’ like this

function my_msls_output() {
    if ( function_exists( 'the_msls' ) ) the_msls();
}
add_action( 'graphene_default_menu', 'my_msls_output' );

The function graphene_default_menu is pluggable. You could also go to override it. There are for sure a lot of additional possibilities.

Let me know,
Dennis.

Thank you realloc! I tried to add you action hook here:

add_filter( 'page_css_class', 'graphene_page_ancestor_class', 10, 4 );

function my_msls_output() {
    if ( function_exists( 'the_msls' ) ) the_msls();
}
add_action( 'graphene_default_menu', 'my_msls_output' );

		wp_list_pages( apply_filters( 'graphene_default_menu_args', $args ) );

but nothings seems to have changed. Sorry I’m not a programmer… Shall I replace some lines?

Do you use the default menu or do you defined a menu in Appearance > Menus?

I use both:
“Menu header” for the first line of my navigation menu and “secondary menu” for the second line

Oh, and the Home page is not the default static page if it is important…

I think I can maybe help you much quicker if you contact my by mail: [email protected]