menus

Add Class to Specific Link in Custom Menu

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you can use nav_menu_css_class filter add_filter(‘nav_menu_css_class’ , ‘my_nav_special_class’ , 10 , 2); function my_nav_special_class($classes, $item){ if(your condition){ //example: you can check value of $item to decide something… $classes[] = ‘my_class’; } return $classes; } Using this $item you can any condition you want. and this will add the class to the specific li and you … Read more

Error “Trying to get property of non-object” with Custom Walker for wp_nav_menu

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I get this error when there are no menus defined or no menus set for the location at Appearance->Menus. When that occurs wp_nav_menu uses a page walker fallback. The fallback (default) for wp_nav_menu is wp_walker_page which uses wp_page_menu which uses wp_list_pages which uses walk_page_tree which uses Walker_Page not Walker_Nav_Menu. And apparently the two walkers are … Read more

How to get current-menu-item title as variable?

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This is possible by filtering wp_nav_menu_objects, which is the easiest place to check which item is the current menu item, because WordPress already added the classes for you. add_filter( ‘wp_nav_menu_objects’, ‘wpse16243_wp_nav_menu_objects’ ); function wpse16243_wp_nav_menu_objects( $sorted_menu_items ) { foreach ( $sorted_menu_items as $menu_item ) { if ( $menu_item->current ) { $GLOBALS[‘wpse16243_title’] = $menu_item->title; break; } } … Read more

Add settings to menu items in the Customizer

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You’re running up against an incomplete implementation of modifying nav menus in the Customizer. In particular, inside of the phpdoc for WP_Customize_Nav_Menu_Item_Setting::preview() you can see this comment: // @todo Add get_post_metadata filters for plugins to add their data. Nevertheless, even though we didn’t implemented core support for previewing changes to nav menu item postmeta, it … Read more

Using a menu walker add a custom item at the end of the menu’s items

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You don’t need a walker in this case. A filter called wp_nav_menu_items is available. It allows you to edit the list items of a menu. Just append your own list item with search field. add_filter( ‘wp_nav_menu_items’, ‘add_search_to_nav’, 10, 2 ); function add_search_to_nav( $items, $args ) { $items .= ‘<li>SEARCH</li>’; return $items; } Note: if you … Read more

Add a custom walker to a menu created in a widget

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If you look at implementation of WP_Nav_Menu_Widget class you will see the following code: function widget($args, $instance) { // Get menu $nav_menu = ! empty( $instance[‘nav_menu’] ) ? wp_get_nav_menu_object( $instance[‘nav_menu’] ) : false; if ( !$nav_menu ) return; $instance[‘title’] = apply_filters( ‘widget_title’, empty( $instance[‘title’] ) ? ” : $instance[‘title’], $instance, $this->id_base ); echo $args[‘before_widget’]; if … Read more

Get page IDs from nav items

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Menu items are stored in the posts table with a post_type of nav_menu_item. So, what you are returning is the ID of the menu item itself, not what it points to. The page/post ID that the menu item refers to is stored in the postmeta table, with a post_id that matches the menu item ID … Read more

Convert output of nav_menu items into a tree-like multidimensional array

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The problem of building a tree from a flat array has been solved here with this, slightly modified, recursive solution: /** * Modification of “Build a tree from a flat array in PHP” * * Authors: @DSkinner, @ImmortalFirefly and @SteveEdson * * @link https://stackoverflow.com/a/28429487/2078474 */ function buildTree( array &$elements, $parentId = 0 ) { $branch … Read more