display sub categories of posts on sidebar

Can anyone help with this please???

[do not bump – if it is so urgent, consider to hire someone https://jobs.wordpress.net/ – also please stop to start new topics for this problem]

That’s a though one… my guess is you’re going to have to build it, because I don’t see loads of plugins on this subject.

Can you code?

My first draft would be: (somthing that gets you started)

In your loop:

[please read the forum guidelines for posting code – there is a limit of 10 lines of code for direct posting in this forum]

<?php

    if( is_category() ){
          $categories = array();
          $cat_id = get_query_var('cat');
     }

     // this line is probably already in your theme; don't place it twice; it's just meant to
     // show you what goes above and below this line
     if ( have_posts() ) while ( have_posts() ) : the_post();

          if( is_category() ){

               $cats = wp_post_get_categories( $post->ID );
               foreach( $cats as $c ){

                    if( !in_array( $c, $categories ) && $c != $cat_id ){
                         $categories[] = $c;
                    }
               }
          }

          //
          //     the rest of your loop
          //
?>

And then in the sidebar ( make sure that -if you have a sidebar.php file, you copy that contents of that file and replace this line with it) :

get_sidebar( );

And add this to the top:

<ul>

     <?php
     foreach( $categories as $c ){
         $cat = get_category( $c );
          echo '<li><a href="'. get_category_link( $c ).">'.$cat->name.'</a></li>'; 

     }?>

     </ul>

By any means it’s not very ‘pretty code’ but it will probably work (haven’t tested it though).

Thanks, I’ll try that out tonight. And I’m just learning to code myself. ??

I’m getting this error on the sidebar:

“Warning: Invalid argument supplied for foreach()”.

Ideas?

Ah, have you assigned categories to the posts already?
In any case, this should fix the error (like I told you; i didn’t test ;-))

<?php if( !empty( $categories ) ):?>
    <ul>

    <?php
         foreach( $categories as $c ){

            $cat = get_category( $c );
            echo '<li><a href="'. get_category_link( $c ).">'.$cat->name.'</a></li>'; 

         }
    ?>

     </ul>

<?php endif; ?>

Hmm. I’m nor getting an error anymore, but I nothing appears.

Again; have you actually assigned posts to the categories?

Yes, I’m getting post on the category pages. But the code above doesn’t produce any content in the sidebar.

No worries though, I think I’m going to table this issue for a while. I’ll come back to it some other day. If you have a chance to test it out yourself LMK if you get it to work.

Thanks Again!

Try it with this: https://pastebin.com/tR4tQCwk