Ok based on what I think you want from your description, you can accomplish this via CSS. You don’t need to create a custom walker for this unless you have other reasons to do so.
If you look carefully, when a menu item is active it will apply the following CSS to the “li” element
current-menu-item
current-menu-ancestor
So with that information, you can write your CSS rule to show/hide the sub-menus for that “li” item.
For example:
li > ul {
display:none;
}
li.current-menu-item > ul, li.current-menu-ancestor > ul {
display:block;
}
Related Posts:
- Split up wp_nav_menu with custom walker
- Call custom field into menu item
- add span class inside wp_nav_menu link anchor tag
- Determine if a navigation item has children
- Add Page ID class to nav menu items
- Bar separated navigation by extending Walker_Nav_Menu
- Bar separated navigation by extending Walker_Page
- Custom Nav Walker sub-menu HTML construct
- `start_el` depth argument in custom nav walker always evaluates to zero
- Benefits of using Nav Walker?
- Use walker for specific menu, or avoid use of walker
- How to display dynamic content in start_lvl function
- Add custom text to menu
- has_children in custom nav_walker
- Adding post excerpt into navigation menu
- Use wp_nav_menu to display ALL pages
- Third level navigation class
- How to add a submenu toggle button inside all “li” elements that have a submenu?
- add span class and i tag inside wp_nav_menu link anchor tag
- Change an li class name in a wordpress custom menu walker
- Add within the output of
- Is this format possible with a custom Nav Walker class?
- walker – 0 level on submenu formatting
- Determine the last child of the parent menu WP Nav Walker
- Navigation doesn’t render when wp is hosted
- How do you add a around the second level of a Menu?
- Help with walker for nav
- How to remove dropdown from wp_nav_menu
- How Do I Add Images To Main Navigation Menu
- Walker menu not displaying at all
- Adding a unique ID to each sub-menu
- Remove a class from a using Walker
- How to Add support for sub-menu item description in wordpress?
- wp_list_pages Hierarchical Help
- changing the labels inside appearance -> menus for some for the fields
- Costum walker with sub menu item count
- How do I add 3rd level of dropdowns to wp_nav_menu array?
- Help with WordPress Custom Nav Walker
- Why is my navigation in my onepage not working?
- url_to_postid method in walker_nav navigation menu causing exceptionally high TTFB
- Is it possible to get_the_post_thumbnail (Featured Image) inside a sprintf function?
- Can I now add a class in the anchor of my menu item with WordPress 5.4?
- What is inside in $item in start_el function in Walker_Nav_Menu class
- Multi-Level Nav Bar
- Adding additional html to the end of the root level in a custom nav walker
- Change markup for just 2nd list element in custom Walker menu
- Where to place a svg chevron down in my custom walker?
- Add active class to wp_nav_menu
- Output existing wp_nav_menu with a custom walker
- how to split vertical menu into two columns using walker nav menu
- Conditional Nav Menu Inside Nav Menu Across Multisite Sites
- How to add odd and even classes to all nav links through walker?
- Output sort number in wp menu list item?
- Creating custom Menu for custom theme
- Check in walker if current page is descendant
- Can’t add optional class to menu item when using Walker_Nav_Menu
- Add dynamic content block to nav section generated by custom walker
- Customize Walker_nav_menu to show posts if item is category
- Determine if a navigation item has children
- Walker for menus
- how to make a walker to this (in bootstrap, i try but not work)
- how can i get the page_ID in nav li [closed]
- Custom navigation / menu output (walker?)
- Mega Menu Walker
- How Does The Walker Class Work?
- Check if wp_nav_menu items have submenus
- start_lvl on Walker is not working
- How to get Menu Navigation Labels to output HTML
- custom menu not found
- wp_nav_menu doesn’t generate parent/ancestor classes
- How to add text before WordPress menu item href
- Nav walker, bootstrap: Display 3rd level items under 2nd level
- Change where navigation bar links?
- How to fix “Supplied nav_menu_item value missing property” after update to WordPress 5.0
- Custom walker nav – Add sequential number as class
- WP Menu Walker – How to know total depth from inside the start_lvl() method
- How do I add recent posts to the menu?
- Conditional secondary menus
- Change submenu markup
- Split into two seperate unordered lists with custom walker
- set certain item in nav walker to active when on archive pages or singles
- wp_nav_menu() | Outputting my own custom code using built in features
- Switch an entire nav menu if user is logged in
- WordPress functions.php does not affect the theme menus
- Wp Nav Menu div containers
- How to get current pages menu text?
- How to include second layer sub menu to Walker Nav?
- need help in wordpress navbar setup
- How can I creat custom menu with bootstrap
- Menu walker: how to tell if a sub menu contains submenus?
- How to remove a sub-menu using walker hooks/filters without relying on a custom walker?
- display cart information within li of cart menu item
- Walker or wp_get_nav_menu_items VS jQuery
- Specific Page that convert Hyperlink to anchor in nav menu
- Menu not always using correct link
- Where these arguments are defined?
- Show All Children of WordPress Menu
- How to make an anchored page in a navigation menu tab
- How to set menu Display location
- How to add a class directly on a unordered list element that is a primary navigation