/**
* Filter by user access to the categories.
*
* It is very important to use this or category filter. Otherwise topics from unauthorized categories will be
* included to the search results.
*
* @param KunenaUser $user
*
* @return $this
*/
public function filterByUserAccess(KunenaUser $user)
{
$categories = $user->getAllowedCategories();
$list = implode(',', $categories);
$this->query->where("a.category_id IN ({$list})");
return $this;
}
