Ruby on rails 设计Omniauth+；找不到Facebook错误。认证通过

我是一个大问题，我遵循以下说明：

为了在我的应用程序中实现Desive FacebookOmniauth，我把它放在

designe.rb（我使用MAC OSX）

这是一个模型

user.rb

  def self.find_for_facebook_oauth(auth, signed_in_resource=nil)
    user = User.where(:provider => auth.provider, :uid => auth.uid).first
    unless user
      user = User.create(:name => auth.extra.raw_info.name,
                         :provider => auth.provider,
                         :uid => auth.uid,
                         :email => auth.info.email,
                         :password => Devise.friendly_token[0,20]
      )
    end
    user
  end


  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable,
         :validatable,:omniauthable, :omniauth_providers => [:facebook]

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController


  def facebook
    # You need to implement the method below in your model (e.g. app/models/user.rb)
    @user = User.find_for_facebook_oauth(request.env["omniauth.auth"], current_user)

    if @user.persisted?
      sign_in_and_redirect @user, :event => :authentication #this will throw if @user is not activated
      set_flash_message(:notice, :success, :kind => "Facebook") if is_navigational_format?
    else
      session["devise.facebook_data"] = request.env["omniauth.auth"]
      redirect_to new_user_registration_url
    end
  end


end

  devise_for :users, :controllers => { :omniauth_callbacks => "users/omniauth_callbacks" }

而这个呢

users/ominiauth\u callbacks\u controller.rb

  def self.find_for_facebook_oauth(auth, signed_in_resource=nil)
    user = User.where(:provider => auth.provider, :uid => auth.uid).first
    unless user
      user = User.create(:name => auth.extra.raw_info.name,
                         :provider => auth.provider,
                         :uid => auth.uid,
                         :email => auth.info.email,
                         :password => Devise.friendly_token[0,20]
      )
    end
    user
  end


  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable,
         :validatable,:omniauthable, :omniauth_providers => [:facebook]

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController


  def facebook
    # You need to implement the method below in your model (e.g. app/models/user.rb)
    @user = User.find_for_facebook_oauth(request.env["omniauth.auth"], current_user)

    if @user.persisted?
      sign_in_and_redirect @user, :event => :authentication #this will throw if @user is not activated
      set_flash_message(:notice, :success, :kind => "Facebook") if is_navigational_format?
    else
      session["devise.facebook_data"] = request.env["omniauth.auth"]
      redirect_to new_user_registration_url
    end
  end


end

  devise_for :users, :controllers => { :omniauth_callbacks => "users/omniauth_callbacks" }

但当我点击链接登录Facebook时，会出现以下情况：

未找到。身份验证通过。

---

请帮助我，我不知道是什么错，我重新制作了流程，出现了相同的错误，如果有人怀疑我要回答的代码，非常感谢。

解决这个问题，从Rails 3.2和Ruby1.9.3升级到Rails 4.0和Ruby2.0