/**
* @param posts $hostPost
* @param posts $visPost
*
* @return float
* @author Panagiotis Vagenas <*****@*****.**>
* @since 150429
*/
protected function rateOnCats(posts $hostPost, posts $visPost)
{
$hostCatIds = array_keys($hostPost->getCategories());
$guestCatsIds = array_keys($visPost->getCategories());
if (empty($hostCatIds) || empty($guestCatsIds)) {
return 0.0;
}
$commonCount = count(array_intersect($hostCatIds, $guestCatsIds));
return (double) ($commonCount / count($hostCatIds));
}
