Add parent menu item in sub-menu in custom nav_walker

So you need to real name and URL of the parent in the submenu.

You have no info about a post item in your function start_lvl().

But in function start_el() you have the items and could query for it’s parent.

This needs some refactoring with putting lines like the if($display_depth > 0){ condition from start_lvl function into your start_el function. Then writing a proper WP query to get the Info’s of the parent item you need in the submenu.

To point a bit more specific:

In start_el function you have the var $item which should contain the ID of the post it represents. Should be $itemId = $item->Id.
If so you should get the parent with $parentId = wp_get_post_parent_id( $itemId ); and further more you can fetch infos from the parent with the parent ID with some other WP functions.

Hope that helps to find your way..

Related Posts:

  1. Mega Menu Walker
  2. start_lvl Ignored in Custom walker_nav_menu
  3. Run a filter when a walker runs
  4. Automatically adding new post categories to menu
  5. Detecting classes, adding widgets, and adding divs in with a Nav Walker
  6. Add login hyperlink to secondary navigation menu
  7. Displaying Logged-In User Name in WordPress Menu
  8. Hide main div if wp_nav_menu is empty
  9. Check if a menu is empty?
  10. How to remove a metabox from menu editor page?
  11. Walker class: Problems with understanding how walk() method can be called without error
  12. Hide a menu-item and its submenus and display a ‘Log in’ link if the user is logged out
  13. The best way to customize “nav-menu-template.php” to add if the ‘link_before’ is “checkbox”
  14. How to add active class to custom menu using while loop and wp_list_pages
  15. WordPress menu deletes when trying to add a hook
  16. Logout and redirect using the WP Menu
  17. Have CSS Class Added with `is_page()` WP function
  18. Add itemprop Schema.org Markup to li Elements in wp_nav_menu
  19. Can’t extend some core classes
  20. Trouble creating conditional PHP for nav menu items with children for custom Walker
  21. Menu — How to add “current-menu-grand-ancestor” css class
  22. Hide Hamburger Menu On Specific Page (Front Page/Home Page)
  23. WP Walker using custom css classes
  24. Add data attribute to each li in menu
  25. Custom Walker_Nav_Menu issue with variables on PHP 7.3
  26. Unique icons next to each WordPress menu item
  27. Child page menu in sidebar
  28. Title Case WordPress Menu Items
  29. WordPress Quick Question . How to Get Parent Link in Submenu in My Code
  30. Trying to store submenu items to render out after main menu
  31. How to change menu order item
  32. Add item to top of menu using a filter in functions.php
  33. Register a menu – Error Header
  34. New walker for walker_nav_menu to change inside container data
  35. Add value to new attribute inside WordPress menu items
  36. How to display different submenus?
  37. Get the name of menu item with wp_nav_menu
  38. How to add aria role and schema markup to custom walker container
  39. How can I use custom menus with a Bootstrap WordPress theme?
  40. Extend Menu Walker Output
  41. Nav-Menu not showing up
  42. Remove submenu item from list
  43. Dynamic Menu drops pages?
  44. Menu not styling. New menus functionality giving me a headache
  45. Nav Walker that shows only children and siblings of top level parent menu item
  46. how to changes mobile menu toggle breakpoint in WordPress
  47. How to display already created menus via php?
  48. Providin exception to WordPress wp_nav_menu Custom CSS Classes
  49. Adding markup to sub menu based on class
  50. How to put 2 php codes in functions.php without site crashing
  51. Menu not updating for logged in users after redirect
  52. Add element after navigation element title don’t works like I expect
  53. Difference between “Walker_Nav_menu” and “walker”
  54. Fatal error when using array_diff() function inside of wp_update_nav_menu hook?
  55. Pulling a variable into the wp_nav_menu function
  56. How I can add div to menu?
  57. Add the “.current-menu-item” class to tag?
  58. WordPress adding in site URL to header links
  59. Custom Links in Walker Class
  60. I am extending Walker_Nav_Menu: How can I get the number of children elements of the current item?
  61. Custom Navigation Bar JSON Syntax Error in JSON at Position 0
  62. How to add different menu items on different menus?
  63. adding a filter to a shortcode?
  64. Change the footer text on the login page
  65. Rewriting search and pagination base
  66. Copyright info change in Theme Child PHP
  67. How to place login logout link on menu that redirects users back to current page?
  68. Is the regular ajax request method safe or I should use admin-ajax.php?
  69. Create an array from an array
  70. Can I change a variable in a content part while calling it?
  71. Shortcode return function with link href inside PHP
  72. Can’t get page content in WordPress
  73. How to call plugin function per site in a multisite?
  74. Noscript not working as it should in wordpress site
  75. Pagination broken on is_front_page()
  76. Missing a text-domain esc_attr_e
  77. Extract and display user infromation on an automatically created page
  78. Add class to ul and li in wp_na
  79. Execute PHP code only with specific user role
  80. PHP function for horizontal Woocommerce thumbnails and badges
  81. Is there a PHP function that will return the block ID generated by WordPress?
  82. Creating a Function and Call It
  83. WooCommerce display price before add to cart [closed]
  84. Show sidebar only to author of post
  85. how to add custom select field to wordpress edit page
  86. All categories options or All categories not Populating
  87. WordPress load javascript file if something… (after the page is loaded)
  88. Wrapping shortcode content in a span or link
  89. Permission functions within wordpress
  90. WordPress display name string manipulation
  91. How do I modify the with wp_nav_menu()
  92. which table updated after logout?
  93. Accessing WordPress Functions get_permalink() in Vanilla PHP?
  94. Saving User Input to PHP Variable
  95. Show div only if product has attribute
  96. Frontend redirect after delete post in wordpress
  97. In WordPress how do you remove render-blocking CSS manually without a plugin?
  98. Link on post title only if post have content
  99. How to save a post to a Custom post type and copy the information to another Custom post type?
  100. Is there a hook that I can use when a fatal error occurs?