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1. StephanHeijl
   Member
   Posted 3 years ago #

   While using WordPress 2.6.3 to build a news site, I tried to use wp_list_categories() to make a lost of my categories in my sidebar. However, while I certainly have 5 of them, this command returns "No categories."
   I originally used the 2.7 beta, and thought it was a bug, however the change of version did not affect the problem.
   Here's the exact code I used:

   <div id="menu">
   <div class="menutop"><span class="header">Menu</span></div>
   <span class="header">Posts uit:</span>
   
   <ol>
   <li><?php wp_list_categories(); ?></li>
   </ol>
   <div id="menufoot"></div>
   </div>

   It was used on this page:

   http://86.91.64.66/Subs/Kandinsky_WP/index.php

   I already searched Google and this site for answers, but the topics regarding this question were 4 months old, and unanswered.

2. @mercime
   Member
   Posted 3 years ago #

   a category appears in list when there is at least one post associated with that category.

3. StephanHeijl
   Member
   Posted 3 years ago #

   As you could see on the page, I already had a post on there with 2 categories. I added a second one, and yet to no avail. I don't think that this is the cause of the problem.

4. StephanHeijl
   Member
   Posted 3 years ago #

   I set the second one to have 2 other categories. When I add the_category() in the menu it displays the categories of the first post, just to prove the categories are still there.

   <div id="menu">
   <div class="menutop"><span class="header">Menu</span></div>
   <span class="header">Posts uit:</span>
   
   <ol>
   <li><?php wp_list_categories(); ?></li>
   </ol>
   
   <ol>
   <li><?php the_category(); ?></li>
   </ol>
   
   <div id="menufoot"></div>
   </div>

   Once again the code I used, and here's the URl:

   http://86.91.64.66/Subs/Kandinsky_WP/index.php

5. @mercime
   Member
   Posted 3 years ago #

   Based on the source of your customized theme, the sidebar is set up before the main content, also
   - the_category is used within THE LOOP, so if it is showing up in your sidebar, then you started THE LOOP before your sidebar.
   - wp_list_categories is used outside THE LOOP, in other words, start THE LOOP after the sidebar tags
   - You also have validation errors . Most of errors caused by wrong codes such as:
   

   <ol>
   <li><?php wp_list_categories(); ?></li>
   </ol>

   should be
   

   <ol>
   <?php wp_list_categories(); ?>
   </ol>

   WP Theme Template Reference

6. StephanHeijl
   Member
   Posted 3 years ago #

   Thanks! Putting the menu after the posts worked like a charm :D

7. tprod
   Member
   Posted 3 years ago #

   Are you sure that wp_list_categories(); must be after the loop here is my code :
   

   <div id="content">
       <div class="left">
          <?php if(strlen(category_description($category))> 7){ ?>
           <div class="category-presentation"><?php echo category_description($category); ?></div>
           <?php } ?>
           <h2><?php echo(get_category_parents($cat, TRUE, ' &raquo; ')); ?></h2>
          <?php //if(!empty($category)){ ?><ul id="category"><?php wp_list_categories('orderby=name&show_count=0&title_li=&child_of='.$cat); ?></ul><?php //} ?>
       </div>
   
       <div class="right">
   		<?php query_posts('cat='.$cat); ?>
           <?php while (have_posts()) : the_post(); ?>
           <div class="post">
               <h3 id="post-<?php the_ID(); ?>"><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title_attribute(); ?>"><?php the_title(); ?></a></h3>
               <p><?php echo the_content(); ?></p>
           </div>
           <?php endwhile; ?>
       </div>
       <div class="clr"></div>
   </div>

   The result when I navigate through categories is "No categories" ? Do you have a solution ?

8. @mercime
   Member
   Posted 3 years ago #

   tprod: the solution I gave above was specifically for StephanHeijl's specific set up based on the theme where the sidebar was placed before the content. Just remember to keep wp_list_categories OUTSIDE of the loop. If you want to list the categories you checked for the post, use the_category

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