The Walker class was implemented in WordPress 2.1 to provide developers with a means to traverse tree-like data structures for the purpose of rendering HTML.

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67
votes
4answers
74k views

Menu items description? Custom Walker for wp_nav_menu()

Normal Wordpress Menu looks like: Home | Blog | About us | Contact But I've seen many pages with descriptions under these links: Home Page | Our Blogs | About us | ...
12
votes
2answers
6k views

Custom Nav walker display current menu item children, or siblings on no children

I've been messing around / searching for hours and still can't get this to work, so i'm finally giving in and asking for some help. I'm trying to write a custom walker that shows only the current ...
11
votes
4answers
2k views

Split up wp_nav_menu with custom walker

I am trying to create a Menu that shows a maximum of 5 items. If there are more items it should wrap them into another <ul> Element to create a dropdown. 5 Items or less: 6 Items or more ...
9
votes
1answer
5k views

Mega Menu Walker

I'm trying to create a mega menu walker. Unfortunately, walkers completely escape my coding knowledge. I could really use some help getting it working. Here's the features I need: Wrap the second-...
8
votes
1answer
250 views

What is a good resource to find out about making custom walkers?

Custom walkers seem to be a poorly-documented area of WP. Online tutorials focus on styling the output, not on directing the walker to go where you want it. I am reading the code, but I wonder if ...
7
votes
2answers
3k views

Add a custom walker to a menu created in a widget

I know how to add a Walker to a custom menu created by the theme (menu named primary in this example), but how can I target a menu thats created in a widget with the default wordpress custom menu ...
7
votes
2answers
2k views

Add Caret to Menu Items with Sub-Menus in WordPress Theme

I'm working on a custom theme using wp_nav_menu(). What I want to do is add a caret to menu items that have sub-menus. For example, If my menu looks like this: Menu Item 1 Menu Item 2 Menu Item ...
7
votes
2answers
585 views

Does Extending Multiple Nav_Menu_Walkers Allow Nested Menus?

Essentially I'm trying to add multiple sub nav menus and I'm pretty close but I just can't seem to find the right tack to solve my problem ... I'm using a variation of a Stu Nichols CSS Menu ... ...
6
votes
4answers
7k views

How to count nav menu items?

I'm creating a custom walker for my nav menu. The goal is to split the menu in to columns like so: I can easily determine where I am in the list by looking at $item->menu_order. What I don't ...
6
votes
3answers
3k views

start_lvl ignored in custom walker_nav_menu

This is my first project involving wordpress and i've got stuck trying to create a custom walker for a footer menu. I basically want to change the menu from the <ul> <li></li> </...
6
votes
1answer
10k views

Display only page specific sub menu items using Custom Walker

I've just implemented the technique described at http://wordpress.org/support/topic/wp_nav_menu-list-only-2nd-level-separate-submenu/page/2 when implementing a theme for a client. When I run the theme ...
6
votes
2answers
371 views

Assign posts to taxonomy terms instead of the taxonomy terms to posts?

So I have a custom post type (people) with a related custom taxonomy (directory). Instead of editing a person and then choosing the related directory organizations I'd like to "edit" a directory org ...
5
votes
4answers
5k views

Custom Walker: how to get ID in function start_lvl

I am making my first custom walker to build an accordion menu. To start with I used this example: http://bitacre.com/2025/custom-nav-menu-walker-for-wordpress-themes There are two functions. First ...
5
votes
2answers
3k views

WordPress Menu Custom Walker Class

We are using a jQuery UI accordian to render a menu in the sidebar. We've already written the markup and javascript and I am just trying to get the wp_nav_menu to output the same markup we've already ...
5
votes
2answers
928 views

How does a minimal menu walker look like?

According to the docs of wp_nav_menu we can specify our own walker function. They suggest to copy the default one and modify it as needed. But to be honest, it is a bit too complicated for the to ...
5
votes
2answers
59 views

WordPress 4.4+ breaks Walker Extension

I upgraded WordPress to 4.5.1 from 4.2.2 and it has broken the functionality I have extending the Walker class. The Walker extension: class ReturnWalker extends Walker{ public $db_fields = array( '...
5
votes
1answer
4k views

How do I dynamically populate wp_nav_menu from a custom taxonomy?

I know this question has been asked in different forms. But as far as I can tell from searching Google and SE/WP it's never been satisfactorily answered. Let's say I have a taxonomy clubs and a ...
5
votes
2answers
706 views

Call custom field into menu item

I have a navigation menu in Wordpress. I would like it to check if the page has a custom field of "menu_icon" and if it does, add that custom field into the menu item it corresponds to. I'm sure this ...
4
votes
1answer
4k views

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

I am trying to add some ARIA related stuff to the wp_nav_menu function. I use a custom walker class for this purpose: class Walker_Nav_Menu_With_Aria extends Walker_Nav_Menu { function ...
4
votes
1answer
3k views

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

I need to add a search field at the end of a menu in a list item. I've been looking at walkers but finding it really hard to figure out what is the last item (or even get the total). Also where would ...
4
votes
1answer
214 views

List Hierarchical Term List with Count with Related Term

What I have are custom posts (of a custom post type, wps_business) that have two taxonomies (wps_location & wps_type), and I would like to list all the terms from type of a specific location. For ...
4
votes
2answers
144 views

Comment Walker vs. Comment Callback

I've been messing around with custom comments this week and I'm trying to figure out when I'd want to use a walker and when I'd use a callback... There's some things I can't quite figure out how to ...
4
votes
1answer
1k views

How Does The Walker Class Work?

Can someone explain to me how the Walker Class works? Do the methods inside the class always need to overload the parent method?
4
votes
1answer
241 views

Add class to top level menu item if it has multiple child levels

I have a WP nav menu, and I need to add a class to any top-level <li> if that item has more than one level of child items (meaning, its child submenu has a submenu too). Like this: <ul> ...
4
votes
5answers
1k views

Any walker causes blank menu?

Using the following, or any other custom Walker_Nav_Menu seems to cause a blank navigation menu, I tried specifying the default to make sure I wasn't going crazy yet it still blanks the output... Any ...
4
votes
1answer
1k views

Custom menu walker: how can i check first item

I need to output different html code only for the first item of my submenus. How can I check in start_el() function if current item is first or not? Example: Menu voice 1 -- Sub 1 -- Sub 2 -- Sub 3 ...
3
votes
3answers
3k views

How do I pass an argument to my custom walker?

I've set up a custom walker, and it works as desired when I hard code my variable. What I want is to be able to call my walker and pass it a variable that is used in the walker. For example: '...
3
votes
3answers
1k views

Incrementing a class in a custom walker

I have written a custom walker that I am using with wp_nav_menu but I need to iterate through 4 custom classes, and I'm not sure how to do this. Basically, each menu-item <li> needs to be given ...
3
votes
1answer
38 views

Pass a parameter to a menu walker

Is there any way to pass a parameter to a menu walker? I'm trying to write a BEM-style walker, and I'd like to be able to pass a class to apply to the menu links via the walker. Something like: <?...
3
votes
1answer
4k views

Why is my menu order not working with wp_nav_menu?

I have a custom menu using the new Menu System but it is not returning in the correct order. I have no idea what order its in - its not alphabetical, or by date, or by any pattern I can see. The link ...
3
votes
1answer
155 views

Walker class: Problems with understanding how walk() method can be called without error

I am struggling with understanding how WordPress uses the Walker class. In particular, I don't understand the walk() method (I think). First, let me explain what I understood: When calling ...
3
votes
2answers
4k views

Determine if a navigation item has children

I am trying to determine if an item has a sub-item with depth 1 or higher. I cannot find anywhere if there is some function/query I can write that grabs the current item looks in the database if it ...
3
votes
2answers
222 views

Adding Post Counts to Menu (Nav) Programmatically?

I'm fairly stumped on this. Without getting too query-heavy, I was wondering what path one might take to produce a menu that links to a category of posts, and displays in parenthesis how many new ...
3
votes
1answer
260 views

Custom Nav Walker menu - Display category count

I have a custom walker menu.( See the code below) I would like to have my nav menu like this: Where 495 is the total of the records containing childrens. Where 42 Number of published articles. ...
3
votes
1answer
633 views

Extend walker class with custom post types [closed]

I'm using the walker class below, but I can't make it work with custom posts. class Zwp_Walker_Nav_Menu_Dynamic extends Walker_Nav_Menu { function end_el(&$output, $item, $depth) { ...
3
votes
0answers
586 views

wp_nav_menu custom walker - child items

I have written a custom walker to integrate a jquery dropdown nav script into my wp template. I need to add .dropdown-link to each of my parent menu items and .dropdown-wrapper to the unordered list ...
2
votes
4answers
4k views

Adding a class (arrows) to main menu links that have children?

I'm wondering if it is possible to add different classes to second/third/fourth/etc-level items that have children in Appearance > Menus tree? That's how I call the menu: <?php $menu_args = ...
2
votes
2answers
11k views

add span class inside wp_nav_menu link anchor tag

I found examples adding a class to top level items, so we can display an arrow in menu items with sub-items, but is seems terrible to cope with the already built in WordPress classes, can't display ...
2
votes
3answers
5k views

Strict Standards Error bootstrap navwalker

I am having trouble understanding this error and I've not come across it before, please could someone help? Strict Standards: Declaration of wp_bootstrap_navwalker::start_lvl() should be compatible ...
2
votes
1answer
2k views

Check if wp_nav_menu items have submenus

I'm looking to output the following markup for a menu through wp_nav_menu, <ul> <li><a href="/">Home</a></li> <li> <a href="/" aria-...
2
votes
1answer
11k views

Customizing Walker_Nav_Menu

I'm looking for a solution to adjust the output of wp_nav_menu only on a specific navigation menu. I have my menu: wp_nav_menu( array( "container" => "nav", "...
2
votes
1answer
8k views

Adding attributes to <a> link in wp_nav_menu using custom Walker function

I am trying to generate a menu using wp_nav_menu. My expected output is this: <!-- Main Menu --> <div class="navbar navbar-blue navbar-fixed-top" style="margin-top:74px"> <...
2
votes
2answers
2k views

Bar separated navigation by extending Walker_Nav_Menu

I have the following menu in my header: <?php $args = array( 'menu' => 'Main Menu', 'container' => false, 'depth' => 1, 'items_wrap' => '...
2
votes
1answer
2k views

Sub-Pages only of menu items in current branch using a custom menu

Although I did a thorough research I could not find a solution. Only solutions coming close. My custom menu ("top") shows this structure (you see a part of it): page 1 subpage 1.1 category A ...
2
votes
1answer
169 views

Custom Walker anchor tag not inheriting attributes

So I am just now learning and playing with custom walkers and I came across this really helpful Stack Overflow question. So I implemented the answer in that answer and added this to my functions.php ...
2
votes
3answers
88 views

Benefits of using Nav Walker?

Are there any benefits to using a nav walker class over iterating through wp_get_nav_menu_items()? Nav walkers seem very clunky to me and iterating over an array feels easier and more re-usable but ...
2
votes
1answer
3k views

Show top-level parent with submenu menu walker

I've used the menu walker below to display dynamic submenus with great effect in the past. It displays 2nd- or lower-level menu items IF the current page is a parent, sibling, or descendant of the ...
2
votes
1answer
818 views

Adding 'active' class to custom taxonomies using walker in functions.php

I'm trying to use the following code in functions.php in order to show a menu with categories (custom taxonomies actually). I simply want it to show active when on the current page. What am I doing ...
2
votes
1answer
792 views

Custom Nav Walker to show siblings and children of current branch?

I have seen very similar (if not exact) queries to this all over Google, but always seem to find something short of what I need. I am trying to create my full vertical menu using wp_nav_menu in my ...
2
votes
0answers
19 views

Render Selected Categories in Admin Edit Post Screen differently

Selected Categories for a post in the admin screen are rendered by: // Put checked cats on top $output .= call_user_func_array( array( $walker, 'walk' ), array( $checked_categories, 0, $args ) ); ...