Display Posts Under Categories in Categories Widget

There has now officially been  enough interest in this feature to add it to the upcoming features list. It is slated for version 3.2.0 of PRO.

If the meantime, I have created a template-override to get this up and running.

 

1. Create a new folder in your active theme called ‘advanced-sidebar-menu’
2. Create a new file in this folder called ‘category_list.php’
3. Add the following code to this file

<?php

/**
 * The Output of the Advanced Sidebar Categories Widget
 *
 * This edit list all of a categories posts under the category which displays in the menu
 * by default. It also support marking the current post as "current category" if on a single post page.
 */

$menu        = Advanced_Sidebar_Menu_Menus_Category::get_current();
$child_terms = $menu->get_child_terms();
$content     = '';

if ( ! class_exists( 'ASM_Posts_Walker' ) ) {
   class ASM_Posts_Walker extends Walker_Category {
      public function end_el( &$output, $page, $depth = 0, $args = array() ) {
         $current_post = get_post();
         $children     = get_posts( array(
            'orderby'       => 'title',
            'order'         => 'ASC',
            'numberposts'   => 100,
            $page->taxonomy => $page->slug,
         ) );
         if ( ! empty( $children ) ) {
            ob_start();
            ?>
            <ul class="children">
               <?php
               foreach ( $children as $_post ) {
                  $class = 'child-post cat-item';
                  if ( is_single( $current_post ) && ! empty( $current_post ) && $current_post->ID === $_post->ID ) {
                     $class .= ' current-cat';
                  }
                  ?>
                  <li class="<?php echo esc_attr( $class ); ?>">
                     <a
                        href="<?php echo esc_url( get_permalink( $_post ) ); ?>"
                        title="<?php echo esc_attr( $_post->post_title ); ?>">
                        <?php echo esc_html( $_post->post_title ) ?>
                     </a>
                  </li>
                  <?php
               }
               ?>
            </ul>
            <?php
            $output .= ob_get_clean();
         }

         parent::end_el( $output, $page, $depth, $args );
      }
   }
}

//Display parent category
if ( $menu->include_parent() ) {
   $content .= '<ul class="parent-sidebar-menu">';

   $list_args = $menu->get_list_categories_args( 'parent' );
   $content   .= $menu->openListItem( wp_list_categories( $list_args ) );
}

if ( ! empty( $child_terms ) ) {
   $content .= '<ul class="child-sidebar-menu">';

   //Always display child categories
   if ( $menu->display_all() ) {
      $list_args           = $menu->get_list_categories_args( 'display-all' );
      $list_args['walker'] = new ASM_Posts_Walker();
      $content             .= wp_list_categories( $list_args );

   } else {
      foreach ( $child_terms as $_term ) {
         //Child terms
         if ( $menu->is_first_level_term( $_term ) ) {
            $list_args = $menu->get_list_categories_args( 'child', $_term );
            $content   .= $menu->openListItem( wp_list_categories( $list_args ) );

            //Grandchild terms
            if ( $menu->is_current_term_ancestor( $_term ) && $menu->has_children( $_term ) ) {
               $content .= '<ul class="grandchild-sidebar-menu children">';

               $list_args           = $menu->get_list_categories_args( 'grandchild', $_term );
               $list_args['walker'] = new ASM_Posts_Walker();
               $content             .= wp_list_categories( $list_args );

               $content .= '</ul>';
            }

            $content .= '</li>';
         }
      }
   }

   $content .= '</ul><!-- End .child-sidebar-menu -->';
}

if ( $menu->include_parent() ) {
   $content .= '</li></ul><!-- End .parent-sidebar-menu -->';
}

return $content;

If you change the following lines:

$children     = get_posts( array(
   'orderby'       => 'title',
   'order'         => 'ASC',
   'numberposts'   => 100,
   $page->taxonomy => $page->slug,
) );

To:

$children     = get_posts( array(
   'post_type'     => 'portfolio', //custom post type slug
   'orderby'       => 'title',
   'order'         => 'ASC',
   'numberposts'   => 100,
   $page->taxonomy => $page->slug,
) );

It will display the custom post type’s posts which are assigned to category instead of “posts”.

I also wanted to mention that the ability to select a post type will be part of version 3.2.0 which is slated to release this quarter.