public function set_up($connection_name = null)
 {
     parent::set_up($connection_name);
     Event::$belongs_to = array(array('venue'), array('host'));
     Venue::$has_many = array(array('events', 'order' => 'id asc'), array('hosts', 'through' => 'events', 'order' => 'hosts.id asc'));
     Venue::$has_one = array();
     Employee::$has_one = array(array('position'));
     Host::$has_many = array(array('events', 'order' => 'id asc'));
     foreach ($this->relationship_names as $name) {
         if (preg_match("/{$name}/", $this->getName(), $match)) {
             $this->relationship_name = $match[0];
         }
     }
 }