bbPress.org

I have tried and it works very well. Just following the steps on the link above and also using this to make the filter:

$args = array(

‘tax_query’ => array(

array(

‘taxonomy’ => ‘your_taxonomy_name_here’,

‘field’ => ‘id’,

‘terms’ => $id_of_your_taxonomy_term

)

)

);

$query = new WP_Query( $args );