43

How can i get taxonomies of a post type?

If I have a post type event and i need to find out the list of taxonomies that are attached to that post type. How do I find them?

35

Hey guys i think i got it! After looking at couple of functions in taxonomy.php file in WordPress I have found this function get_object_taxonomies(); which did the trick :)

Here is the function

function get_post_taxonomies($post) {
    // Passing an object
    // Why another var?? $output = 'objects'; // name / objects
    $taxonomies = get_object_taxonomies($post, 'objects');

    /*// Passing a string using get_post_type: return (string) post, page, custom...
    $post_type  = get_post_type($post);
    $taxonomies = get_object_taxonomies($post_type, 'objects');*/

    /*// In the loop with the ID
    $theID      = get_the_ID();
    $post_type  = get_post_type($theID);
    $taxonomies = get_object_taxonomies($post_type, 'objects');*/

    // You can also use the global $post

    // edited to fix previous error $taxonomies
    // edited to force type hinting array
    return (array) $taxonomies; // returning array of taxonomies
}
  • 2
    See this for more info: codex.wordpress.org/Function_Reference/get_object_taxonomies – Manny Fleurmond Jun 21 '11 at 13:15
  • wow... good to know about get_object_taxonomies(). it just helped me hijack template_redirect – helgatheviking Nov 10 '11 at 3:17
  • Hi thankx for this but how to order them by ID instead of NAME? – dh47 Oct 19 '15 at 7:08
  • easiest way will be just sort them using a for or foreach loop. – Sisir Oct 19 '15 at 9:25
  • Yes I am fetching using foreach loop but I am getting order by name $taxonomies = get_object_taxonomies( array( 'post_type' => $post_type ) ); foreach( $taxonomies as $taxonomy ) : // Gets every "category" (term) in this taxonomy to get the respective posts $terms = get_terms( $taxonomy ); ?> <ul class="specials"><?php foreach( $terms as $term ) : ?> <li><h2 ><?php echo $term->name; ?></h2> – dh47 Oct 19 '15 at 10:19
9

get_categories will do the job.

get_categories('taxonomy=taxonomy_name&type=custom_post_type'); 
  • (I think if I understood the question right!) – addedlovely Jun 21 '11 at 11:46
  • 3
    Thing is i don't have any taxonomy name, that's what i want to find out. I only have the name of the post type. By the post type name i want to find out all the taxonomy that are attached to it. Thanks anyway! – Sisir Jun 21 '11 at 12:47
1

Have you tried anything? something like this?

<?php 

$args=array(
  'object_type' => array('event') 
); 

$output = 'names'; // or objects
$operator = 'and'; // 'and' or 'or'
$taxonomies=get_taxonomies($args,$output,$operator); 
if  ($taxonomies) {
  foreach ($taxonomies  as $taxonomy ) {
    echo '<p>'. $taxonomy. '</p>';
  }
}
?>
  • 1
    Looked at get_taxonomies(); function on codex but it has very poor documentation and was no idea how i can pass the post types. – Sisir Jun 21 '11 at 9:56
  • Sorry, this code is returning all registered taxonomies in wordpress. – Sisir Jun 21 '11 at 9:59

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