before_filter :request_confirm, :only => [:delete_device]

def request_confirm

  user = User.find_by_id(session[:user_id])

  authenticate_or_request_with_http_basic do |nick, pass|
   nick == user.nickname and pass == user.password
  end

end

authenticate_or_request_with_http_basic do |nick, pass|
   nick == user.nickname and pass == user.password
end

def authenticate_or_request_with_http_basic(realm = "Application", &login_procedure)
  authenticate_with_http_basic(&login_procedure) || request_http_basic_authentication(realm)
end