function show($id)
 {
     $user = User::find($id);
     $all = User::find_by_username("rajesh");
     $allu = User::find_by_username_and_email("rajesh", "*****@*****.**");
     ActiveRecord::println($all);
     ActiveRecord::println($allu);
     return $this->View(array('view' => 'show', 'model' => $user));
 }