Reply To: Default Dropdown item as a custom field

Hi,

Might be possible, but definitely requires some custom coding. If I understand correctly, you want to select a default category depending on which page is displayed.

I constructed a small custom code snippet, which may help you with that. All you need to change/add is the $select_category variable. It is an array of items, each line represents one page ID and the default selected category ID.
I have added two lines to help, one line one, this code will try to select category ID = 321 whenever the page with the ID = 123 is displayed – also for page ID = 124 it selects category ID = 421.

Try adding this code to the functions.php file in your theme/child theme directory – make sure to have a full server back-up first for safety. For more details you can check the safe coding guidelines.

add_filter('asp_pre_get_front_filters', 'asp_change_a_filter', 10, 2);
function asp_change_a_filter($filters, $type) {
	$select_category = array(
		123 => 321,	// Page ID -> Default Selected Category ID
		124 => 421
	);
	
	// Do not change anything below
	foreach ($filters as $k => &$filter) {
		if ( $filter->type() == 'taxonomy' ) {
			if ( is_singular() && isset($select_category[get_queried_object_id()]) ) {
				$filter->attr($select_category[get_queried_object_id()], 'selected', true);
			}
		}
    }    
	return $filters;
}