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Thread tagged as: Question, Blog

Perch Categories (related posts) query

Trying to get a list of posts related to the currently shown post. This is done by categories and must factor in multiple categories if present.

category_only.html:

<perch:category id="catSlug" type="slug" for="catTitle" /><perch:if exists="perch_item_last"><perch:else />|</perch:if>

post.php

<?php
  $cats = perch_blog_post_categories(perch_get('s'), array(
    'template'=>'category_only.html',                             
  ), true);
  $cats = explode('|',$cats);                       
  perch_blog_custom(array(
    'category' => $cats,
  ));
?>

With above, can get $cats to contain an array of relevant category handles. However when passed into the perch_blog_custom() function this returns empty.

Any thoughts?
Cole Henley

Cole Henley 0 points

  • 6 years ago
Drew McLellan

Drew McLellan 2638 points
Perch Support

6 years ago

If you print_r($cats) does it look like you'd expect?
Cole Henley

Cole Henley 0 points

6 years ago

Yep:

Array ( [0] => knowledge [1] => news )
Drew McLellan

Drew McLellan 2638 points
Perch Support

6 years ago

That looks like it should work. Are you categories in a set called blog ?
Cole Henley

Cole Henley 0 points

6 years ago

No, they're in a set called 'perspectives'. However, even if I update the page function no results are returned:

perch_blog_custom(array(
    'category' => $cats,
    'set' => 'perspectives',
));

Does perch_blog_custom support custom sets?
Drew McLellan

Drew McLellan 2638 points
Perch Support

6 years ago

Blog expects things to use its category set unless you tell it otherwise. The category option takes category paths so use those.

Change:

<perch:category id="catSlug" type="slug" for="catTitle" /><perch:if exists="perch_item_last"><perch:else />|</perch:if>

to

perspectives/<perch:category id="catSlug" type="slug" for="catTitle" /><perch:if exists="perch_item_last"><perch:else />|</perch:if>
Cole Henley

Cole Henley 0 points

6 years ago

Brilliant thanks, hadn't appreciated the sets prefix.