Validación del formulario de registro

[email protected]

public function create() {
  $input = Input::except('_token');
  $rules = [
  	'firstname' => 'required',
  	'lastname' => 'required',
  	'email' => 'required|email|unique:usuario,email_usr',
  	'password' => 'required|min:8|confirmed',
  	'password_confirmation' => 'required',
  ];
	
  $v = Validator::make($input, $rules);
	
  if ($v->fails()) {
    return Redirect::route('register')->withErrors($v)->withInput(Input::only('firstname', 'lastname', 'email', 'password'));
  }
}