class MLR extends ML{function related($k){M::factory($k);$m='db\\'.$this->relationships[$k];return$m(get_class($this),$k,$this);}} #Loadable Relationships Model
function logged_in(){static$u;$u=$u?:\M::factory(user,\s()->u?:0);return$u->id?$u:NULL;}function logout(){session_destroy();}
