Ruby Facebook Omniauth的Rails 5 Faraday连接

我已经尝试了书中的所有技巧和堆栈溢出中所有可能的解决方案，但仍然无法解决问题。程序在回拨启动阶段暂停，并显示

法拉第连接：超时

。我有以下代码：

gem 'omniauth', '~> 1.3', '>= 1.3.1'
gem 'omniauth-facebook'

Routes.rb

devise_for :users, 
:path => '', 
:path_names => {:sign_in => 'login', :sign_out => 'logout',             :edit => 'profile' },
:controllers => {:omniauth_callbacks => 'omniauth_callbacks'}

/Controller.rb

class OmniauthCallbacksController < Devise::OmniauthCallbacksController
  def facebook
    @user = User.from_omniauth(request.env["omniauth.auth"])
    if @user.persisted? 
      sign_in_and_redirect @user, :event => :authentication
      set_flash_message(:notice, :success, :kind => "Facebook") if is_navigational_format?
    else
      session["devise.facebook_data"] = request.env["omniauth.auth"].except("extra")
      redirect_to new_user_registration_url
    end
  end
end

---

你找到解决办法了吗？你找到解决办法了吗？

class User < ApplicationRecord
  def self.from_omniauth(auth)
    user = User.where(email: auth.info.email).first
    if user
      return user
    else
      where(provider: auth.provider, uid: auth.uid).first_or_create do |user|
        user.provider = auth.provider
        user.uid = auth.uid
        user.email = auth.info.email
        user.image = auth.info.image
        user.password = Devise.friendly_token[0,20]
        user.firstname = auth.info.first_name
        user.lastname = auth.info.last_name
        user.phonenumber == '0000000000'
        user.tc == true
        user.year == true
      end
    end
  end
end

config.omniauth:facebook,ENV['FACEBOOK_ID'],ENV['FACEBOOK_SECRET'],scope:'email',info_fields:'email,first_name,last_name'