Ufdjrw

I need to show only the primary category (a function added by default from YOAST) for a custom taxonomy in my template (wordpress).
The taxonomy is taken from the custom "course_category" in learnpress plugin.
It's a taxonomy that adds the categories into the courses created by the plugin.

I would like to create a function to call it in my loops, but i don't know how to write it properly for the custom taxonomies.

I found this code to use for standard categories (NOT FOR CUSTOM TAXONOMIES)

<?php
function get_primary_category( $post = 0 ) 
if ( ! $post ) 
$post = get_the_ID();

// SHOW YOAST PRIMARY CATEGORY, OR FIRST CATEGORY
$category = get_the_category( $post );
$primary_category = array();
// If post has a category assigned.
if ($category)
$category_display = '';
$category_slug = '';
$category_link = '';
$category_id = '';

if ( class_exists('WPSEO_Primary_Term') )

 // Show the post's 'Primary' category, if this Yoast feature is available, & one is set
 $wpseo_primary_term = new WPSEO_Primary_Term( 'category', get_the_id( $post ) );
 $wpseo_primary_term = $wpseo_primary_term->get_primary_term();
 $term = get_term( $wpseo_primary_term );
 if (is_wp_error($term)) 
 // Default to first category (not Yoast) if an error is returned
 $category_display = $category[0]->name;
 $category_slug = $category[0]->slug;
 $category_link = get_category_link( $category[0]->term_id );
 $category_id = $category[0]->term_id;

 else 
 // Yoast Primary category
 $category_display = $term->name;
 $category_slug = $term->slug;
 $category_link = get_category_link( $term->term_id );
 $category_id = $term->term_id;
 

else 
 // Default, display the first category in WP's list of assigned categories
 $category_display = $category[0]->name;
 $category_slug = $category[0]->slug;
 $category_link = get_category_link( $category[0]->term_id );
 $category_id = $term->term_id;

$primary_category['url'] = $category_link;
$primary_category['slug'] = $category_slug;
$primary_category['title'] = $category_display;
$primary_category['id'] = $category_id;


return $primary_category;

?>

which i can call later with

<?php echo '<pre>'.print_r(get_primary_category(get_the_ID()), true).'</pre>'; ?>