You can create whatever new taxonomies you want to by adding register_taxonomy() function in functions.php After that you can simply assign all the posts related to Category C to that custom taxonomy using Convert Post types plugin.
You’re using wrong arguments for get_the_category_list function. The function you should use for this is wp_get_object_terms http://codex.wordpress.org/Function_Reference/wp_get_object_terms
Don’t use query_posts(). Use pre_get_posts instead: function wpse82745_filter_pre_get_posts( $query ) { // Only modify the main loop, // and only in the blog posts index if ( is_home() && $query->is_main_query() ) { $query->set( ‘category__not_in’, array( ’13’ ) ); } } add_action( ‘pre_get_post’, ‘wpse82745_filter_pre_get_posts’ ); This callback will exclude category 13 from the main loop in … Read more
In the interest of closure and so someone in the future researching anything similar doesn’t get sidetracked by my posting here, it turned out to be our memcached. Once we hooked up to a new cache, the category issue disappeared.
Posting the answer that was solved by OP in one of the comments. This way it’s easier to read it. Hopefully a moderator can mark the question as solved. .page-template-template-magazine-php .post-meta, .category-services .post-meta { display:none; }
Assuming you know the parent category ID, you can use get_terms() function. $args = array( ‘parent’ => 100 // id of the direct parent ); $cats = get_terms( ‘product_cat’, $args ); foreach( $cats as $cat ) { echo $cat->name; } Here is more information on this function and additional arguments you can use. http://codex.wordpress.org/Function_Reference/get_terms
I would do it this way: get all sub-categories (include empty, set up hierarchically) as array retrieve the depth of the array in PHP (this part is taken (but adapted) from here) Altogether, it’s the following code, which is bundled into a function, but could, of course, be used directly somewhere in a template file: … Read more
You’re doing it correct @its_me. The latter, get_term_by() would be the best way, In my opinion , as I believe get_category_by_path uses get_term_by, just prepopulating the taxonomy to be category. Edit: As I mentioned in my comment, get_category_by_path is much less efficient, since it gets multiple terms,. and then compares the hierarchical path. get_term_by is … Read more
As pointed out by @Jagst3r15, you’re going to have to loop through each category’s posts no matter what to filter out those posts that hold your meta key. For a high-level answer: I’d suggest looking at the INNER JOIN logic that happens in _pad_term_counts() for an example of how to bring in the posts table. … Read more
If a is the category slug, then following code would work – add_action(‘template_include’, ‘wpse129481_template_include’); function wpse129481_template_include($t) { // is category archive page if( is_category() ) { // current queried category id from queried object $child_id = get_queried_object_id(); // parent category object, getting it by slug. $parent_cat = get_term_by(‘slug’, ‘a’, ‘category’); // current category object, can … Read more