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What I would like to achieve is getting the posts categories and subcategories (without needing subcategories to be related to this post) (when viewing the post) in a list outside of the loop, preferably in a sidebar widget. I want it to get updated automatically when displaying different posts without needing the user to specify the categories or posts manually from back-end. I tried with GLOBALS but couldn't get it to work.

Anyone done anything like this before? How should I approach?

Thanks in advance.

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  • get_queried_object_id() should return the id, Just tested with my stock _s theme. var_dump(get_queried_object_id()); returning int(9511) . Are you sure your sidebar or something else is not modifying the query? Can you try wp_reset_postdata() before your code? – Sahriar Saikat Mar 9 '20 at 16:59
  • @SahriarSaikat thanks for your reply, I will remove the code - above code returns sub-categories only if they are associated with the post. Does nothing like what I want. I am at the beginning again. – Arg Geo Mar 9 '20 at 17:04
  • Dump get_queried_object_id() in sidebar and see what it returns – Sahriar Saikat Mar 9 '20 at 17:07
  • It returns the page id, correctly. – Arg Geo Mar 9 '20 at 17:14
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You can use this in your sidebar.php. I highly recommend you to use a child theme.

Here is a minimum example of such a tag list. you can also make a widget out of it. Learn here.

And add html based on your theme's design structure.

<ul>
<?php 
$terms = wp_get_post_terms( get_queried_object_id(), 'taxonomy-name-here' );
foreach($terms as $term){
?>
    <li>
        <a href="<?php echo get_term_link( $term ); ?>"><?php echo $term->name; ?></a>
    </li>
<?php } ?>
</ul>
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  • prntscr.com/rdtt83 this is what I am trying to achieve. – Arg Geo Mar 9 '20 at 17:24
  • You post this code in sidebar.php – Sahriar Saikat Mar 9 '20 at 17:27
  • I have added more info – Sahriar Saikat Mar 9 '20 at 17:27
  • Won't this display only terms related to the post? – Arg Geo Mar 9 '20 at 17:29
  • And Stackoverflow is more about solving your problems, not asking others to do your homework, please do your research first. – Sahriar Saikat Mar 9 '20 at 17:29

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