How to display post's category on related posts

[somuch77Participant]

Hi Ernest

On RPP option panel there’s option to display author or date of posts on RPP. I can’t find a way how to display categories instead.

I tried to open on shortcode php, I found code to echo author <?php echo $rpp_post->author; ?>
I tried to call categories from here, tried some code like $rpp_post->category or $rpp_post->categories and some others code, none of them work. Is there a way to echo related posts category?

Thanks

[Ernest MarcinkoKeymaster]

Hi!

I think a better solution would be to use a filtering function, so the source code is not changed and it’s update proof.

I’ve put together a function that might do the trick. Put this to the functions.php file in your active theme directory:

add_filter( 'rpp_item_after_postprocessing', 'rpp_add_category_titles', 1, 1 );
 
function rpp_add_category_titles( $post ) {
 
  // Get the post categories
  $post_categories = wp_get_post_categories( $post->ID );
  $cats = "";

  // Concatenate category names to the $cats variable
  foreach($post_categories as $c){
      $cat = get_category( $c );
      $cats .= " ".$cat->name;
  }                

  if ( $cats != "")
    $post->author  = $cats;
 
  return $post;
}

Make sure to save the related posts pro options to clear the posts cache.

I haven’t tried this code, but I’m hoping it will work.

Best,
Ernest Marcinko
If you like my products, don't forget to rate them on codecanyon :)

[somuch77Participant]

Can you check if this actually works?

I already add that code on my theme’s function.php, not working in here.

Am I have to edit other than function.php? I tried to change
<?php echo $rpp_post->author; ?>
to
<?php echo $rpp_post->cats; ?>
on \includes\views\rpp.shortcode.php
also not working.

Thanks

[Ernest MarcinkoKeymaster]

Indeed, I tested it and there was an error. Change line:

$post_categories = wp_get_post_categories( $post->ID );

to

$post_categories = wp_get_post_categories( $post->id );

and it should start working 🙂

Best,
Ernest Marcinko
If you like my products, don't forget to rate them on codecanyon :)

[somuch77Participant]

Yep, it works! Is it possible to add comma in between categories if the post have 2 or more categories?
Maybe like this:
Health, Sport
Health, Sport, Fitness

• This reply was modified 7 years, 2 months ago by  somuch77.

[Ernest MarcinkoKeymaster]

Actually, yes, and it’s probably better that way. Try changing the whole thing to this:

add_filter( 'rpp_item_after_postprocessing', 'rpp_add_category_titles', 1, 1 );
 
function rpp_add_category_titles( $post ) {
 
  // Get the post categories
  $post_categories = wp_get_post_categories( $post->id );
  $cats = array();

  // Concatenate category names to the $cats variable
  foreach($post_categories as $c){
      $cat = get_category( $c );
      $cats[] = $cat->name;
  }                

  if ( count($cats) )
    $post->author  = implode(", ", $cats);
 
  return $post;
}

Best,
Ernest Marcinko
If you like my products, don't forget to rate them on codecanyon :)

[somuch77Participant]

Yep, Its done 😀 Thanks for your help!

[Author]

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