Ruby on rails 设计会话控制器以避免错误

我创建了一个会话\u控制器来处理令牌身份验证，但出现以下错误：

Started POST "/users/sign_in" for 127.0.0.1 at 2013-04-29 20:29:44 +0200
Processing by SessionsController#create as */*
  Parameters: {"user_login"=>{"login"=>"admin@example.com.", "password"=>"[FILTERED]"}}
Completed 500 Internal Server Error in 1ms

ArgumentError (wrong number of arguments (2 for 1)):
  activerecord (3.2.13) lib/active_record/attribute_methods.rb:24:in `[]'
  .../bundler/gems/devise-dceb788c6b53/lib/devise.rb:436:in `block (2 levels) in configure_warden!'
  warden (1.2.1) lib/warden/session_serializer.rb:35:in `fetch'
  warden (1.2.1) lib/warden/proxy.rb:212:in `user'
  warden (1.2.1) lib/warden/proxy.rb:318:in `_perform_authentication'
  warden (1.2.1) lib/warden/proxy.rb:104:in `authenticate'
  warden (1.2.1) lib/warden/proxy.rb:114:in `authenticate?'
  .../bundler/gems/devise-dceb788c6b53/app/controllers/devise_controller.rb:124:in `require_no_authentication'

我的控制器看起来像：

class SessionsController < DeviseController

  before_filter :ensure_params_exist

  respond_to :json

  def create
    build_resource
    resource = User.find_for_database_authentication(:email => params[:user_login][:login])
    return invalid_login_attempt unless resource

    if resource.valid_password?(params[:user_login][:password])
      sign_in("user", resource)
      render :json => {:success => true, :auth_token => resource.authentication_token, :email => resource.email}
      return
    end
    invalid_login_attempt
  end

---

有什么问题吗？

您的类声明与设计命名空间不匹配：

class SessionsController < Devise::SessionsController

class sessioncontroller

那么我不知道。。。顺便说一句，您在params中的登录电子邮件末尾有一个“.”，这正常吗？尝试登录（资源名称，资源），而不是当前登录。此外，如果用super替换create action中的所有内容，它是否有效？

class SessionsController < Devise::SessionsController