You would need to iterate over the found posts using a foreach loop and for each house post you would get its room child posts, for which you can use the function types_child_posts like so:
where $post_id comes from the house posts you are iterating over.
For house posts that do not have 2 child room posts you can remove the post from the results, being careful to update the post_count and found_posts parameters at the same time.
If you try and get stuck let me know and I will see if I can help.
You'll need to add some custom code using the API to your site. I have provided a sample of the code you would need to add (to your theme's functions.php file, or using a plugin such as Code Snippets) below, but please note that providing or supporting custom code is outside our support policy, and if you need further help you should consider contacting a developer such as those listed on our contractors page: https://toolset.com/contractors/
function tssupp_two_rooms( $query, $view_settings, $view_id ){
$house_slug = 'house'; // Edit the house post type slug
$room_slug = 'room'; // Edit the room post type slug
if ( $view_id == 25 ) { // Edit ID
$houses = $query->posts;
foreach ($houses as $key => $house) {
// Get the child rooms of this house
$rooms = get_posts( array( 'post_type' => $room_slug, 'meta_key' => '_wpcf_belongs_' . $house_slug . '_id', 'meta_value' => $house->ID, 'numberposts' => -1 ) );
if ( count($rooms) != 2 ) {
// remove from results because does not have 2 rooms
unset( $houses[ $key ] );
}
}
$number_of_posts = count( $houses );
$query->post_count = $number_of_posts;
$query->found_posts = $number_of_posts;
// reindex and update results
$query->posts = array_values( $houses );
}
return $query;
}
add_filter( 'wpv_filter_query_post_process', 'tssupp_two_rooms', 101, 3 );
Note that you have to edit the ID of the View, and the slugs of the house and room custom post types.
