Category menu item and its last 10 posts as sub-menu

1 comment

1. I finally achieve it with this code in function.php

   // Front end only, don't hack on the settings page
   if ( ! is_admin() ) {
   // Hook in early to modify the menu
   // This is before the CSS "selected" classes are calculated
   add_filter( 'wp_get_nav_menu_items', 'display_lasts_ten_posts_for_categories_menu_item', 10, 3 );
   }
   
   // Add the ten last posts of af categroy menu item in a sub menu
   function display_lasts_ten_posts_for_categories_menu_item( $items, $menu, $args ) {
   
   
   $menu_order = count($items); /* Offset menu order */
   $child_items = array();
   
   // Loop through the menu items looking category menu object
   foreach ( $items as $item ) {
   
       // Test if menu item is a categroy and has no sub-category
       if ( 'category' != $item->object || ('category' == $item->object && get_category_children($item->object_id)) )
           continue;
   
       // Query the lasts ten category posts
       $category_ten_last_posts = array(
               'numberposts' => 10,
               'cat' => $item->object_id,
               'orderby' => 'date',
               'order' => 'DESC'
       );
   
       foreach ( get_posts( $category_ten_last_posts ) as $post ) {
           // Add sub menu item
           $post->menu_item_parent = $item->ID;
           $post->post_type = 'nav_menu_item';
           $post->object = 'custom';
           $post->type = 'custom';
           $post->menu_order = ++$menu_order;
           $post->title = $post->post_title;
           $post->url = get_permalink( $post->ID );
           /* add children */
           $child_items[]= $post;
       }
   }
   return array_merge( $items, $child_items );
   }
   

   This will display as sub menu, the ten last posts of a category placed as menu item or sub menu item in admin panel.

   This code is highly inspired from this: http://codeseekah.com/2012/03/05/list-all-posts-in-wordpress-navigation-menu/

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