/**
* Show a count of all online users on application
* @param [type] $query [description]
* @return [type] [description]
*/
public function countOnlineUsers($query)
{
return $query->whereNotNull('user_id')->with('user')->count();
}
/**
* Scope queries to assignments that have been finished
*
* @param [type] $query [description]
* @return [type] [description]
*/
public function scopeFinished($query)
{
$query->whereNotNull('finished_on');
}
