// Function to filter meal plans by the current week
function tssupp_filter_view($view_args, $view_settings, $view_id)
{
    // Edit the date field slug to match your date field
    $date_field_slug = 'datum';
 
    // Edit the array with the View ID(s) you want to apply the filter to
    if (in_array($view_id, array( 123 ))) {
 
        // Get the start and end of the current week
        $current_week_start = strtotime("monday this week");
        $current_week_end = strtotime("sunday 23:59:59");
 
        // Check if meta_query is set and initialize it if not
        if ( !isset($view_args['meta_query']) ) {
            $view_args['meta_query'] = array();
        }

        // Add the filter to the query to show posts between the start and end of the current week
        $view_args['meta_query'][] = array(
            'key'      => 'wpcf-'.$date_field_slug,
            'value'    => array($current_week_start, $current_week_end),
            'compare'  => 'BETWEEN'
        );
    }
 
    // Return the modified view arguments
    return $view_args;
}

// Add the filter to the Views API
add_filter('wpv_filter_query', 'tssupp_filter_view', 101, 3);