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1. jayred
   Member
   Posted 2 years ago #

   So while there are clearly documented ways to check if the user is currently viewing a subpage, I needed a way to check if the user is currently viewing a category page where the category they were viewing is a subcategory (any subcategory, don't care which one).

   After struggling around with the idea for a while (and finding NOTHING online), I came up with the following code that seems to work. I'm curious, however, if anyone has any suggestions for a better way to do it.

   function is_subcategory(){
   		global $wpdb;
   
   		$root_cats = $wpdb->get_results("SELECT term_id FROM $wpdb->term_taxonomy WHERE taxonomy = 'category' AND parent = 0");
   		$cat_list = array();
   		foreach( $root_cats as $cat ){
   			array_push( $cat_list, $cat->term_id);
   		}
   		$is_root = is_category( $cat_list );
   		if( $is_root ) return false; else return true;
   	}

2. alanft
   Member
   Posted 2 years ago #

   http://codex.wordpress.org/Function_Reference/get_category_parents

   or

   http://codex.wordpress.org/Function_Reference/get_term_children

   may be useful to you

3. jayred
   Member
   Posted 2 years ago #

   As best as I can understand the documentation for those two functions, you have to pass them a category id, which I don't know of a way to get automatically based on the category page the user is currently viewing.

4. alanft
   Member
   Posted 2 years ago #

   you can use the variable $cat (set by WP) for the category of the current category page

5. anthonylrivera
   Member
   Posted 2 years ago #

   Hey I came across the same issue today and this is what I ended up with and seemed to work.

   function is_subcategory (){
       $cat = get_query_var('cat');
       $category = get_category($cat);
       return ( $category->parent == '0' ) ? true : false;
   }

   which can be used in templates like any other conditional tag.

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