That's great, thanks for the prod in the right direction and yes, I really hope this is useful for someone one day as there's nothing worse than an incomplete thread!
I've just discovered that this has somehow broken all of my other relationships driven Views and they're all returning no results! I'm just reopening the ticket while I investigate.
You should must make sure that the custom JS you added should be run only on your target view so you should try to adjust the JS code and target specific element under the view output ID 1137.
I'm not sure at the moment, but it seems to be an issue with the wpv_filter_query_post_process function as when this hook is commented the rest of it works fine and having the JS there or not doesn't seem to make a difference.
Ok, I'm narrowing it down. The no results issue is being caused due to the inclusion of this bit of code:
//If the filtered classes array is empty
if( empty( $filtered_classes ) ){
//Set the post count and found posts to zero and unset any left over posts
$query->post_count = 0;
$query->found_posts = 0;
unset( $query->post );
}
But that is working properly. The real issue is that the hook is executing all the code regardless of the View ID, which means this line isn't having the desired effect:
//If this is the Class Type Classes View (ID: 1137)
if( $view_id = 1137 ){
