Profile: Matthias Reichl

Problem:

How can I set the background-color of radio field, when a filter is selected / checked? The color should be the same like hover.

Solution:

It needs some custom JS codes, see details here:
https://toolset.com/forums/topic/filter-css-view-problem/#post-1092875

Relevant Documentation:

Problem:
A View displays *all* results until a filter is applied. How to initially show *no* results?

Solution:
You need to use the Views API and check whether any filters are being applied, and if not, break the query. An example of such code is:

/**
 * No initial results
 *
 * Don't show View results until a filter has been applied
 * 
 * Tests for custom field filters, taxonomy filters, or text searches
 */
function tssupp_no_initial_results( $query_results, $view_settings, $view_id ){
   
    $target_views = array( 226 ); // Edit to add IDs of Views to add this to
 
    if ( in_array( $view_id, $target_views ) ) {
   
        // if there is a search term set
        if ( !isset( $query_results->query['meta_query'] ) && !isset( $query_results->query['tax_query'] ) && !isset( $query_results->query['s'] ) ) {
            $query_results->posts = array();
            $query_results->post_count = 0;
            $query_results->found_posts = 0;
        }
    }
   
    return $query_results;
}
add_filter( 'wpv_filter_query_post_process', 'tssupp_no_initial_results', 10, 3 );

Relevant Documentation:
https://wp-types.com/documentation/programmer-reference/views-filters/#wpv_filter_query_post_process

Problem: I would like to improve my site's initial page download time.

Solution: A caching plugin may be helpful, since there are several processor-intensive plugins and themes in place, as well as complex queries. Use Query Monitor to time individual queries required for the page load. Any single query that takes longer than 0.5ms should be investigated in more detail.