Can anyone help me with Wordpress's get_term_link()?

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3

The get_term_link($term, $taxonomy) function takes two parameters:

  1. $term: This can be one of three data types: String (term name or slug), Integer (term id) or Object (term object).
  2. $taxonomy: This is the taxonomy name, which should already be defined with register_taxonomy() if it's not a built-in taxonomy, such as category or post_tag.

The WP_Error is thrown when either the term specified does not exist within the taxonomy, or the taxonomy has not been defined.

To have a better idea and hopefully fix your problem, it is good to see the list of taxonomies available, by using the get_terms($taxonomy). It will return an array of Taxonomy Objects, which contain the data structure of each taxonomy. For example:

Array
(
    [0] => stdClass Object
        (
            [term_id] => 37
            [name] => Beach
            [slug] => beach
            [term_group] => 0
            [term_taxonomy_id] => 56
            [taxonomy] => portfolio-category
            [description] => 
            [parent] => 0
            [count] => 7
        )

In the example I’m using a custom taxonomy I’ve created previously, called ‘portfolio-category’. Now, based on the information provided by the taxonomy object, you can get the link in 3 different ways:

  • By using the taxonomy name: get_term_link('Beach', 'portfolio-category');
  • By using the taxonomy slug: get_term_link('beach', 'portfolio-category');
  • By using the taxonomy object: get_term_link($term, 'portfolio-category');

Last, but not least… To get a comma separated list of taxonomies, you can use the following code, assuming that you have the $post_id:

$terms = get_the_term_list($post_id, 'portfolio-category', null, ', ', null);

Hope this helps!