[@shanebp Participant 12 years, 8 months ago]

This seems to work – there may be a better way…

In an over-ride of content-single-forum.php, do something like this:

if ( // some condition ) {
 
	$my_r['meta_query'] = array(
		array(
		'key' => 'my_key',
		'value' => 'my_value',
		'compare' => '=',
		)
	);
}
else
	$my_r = ''; 

Then change bbp_has_topics() to bbp_has_topics( $my_r )