由于验证身份验证代码出错，使用rails / devise的facebook omniauth登录无法正常工作

Question

我试图允许我的用户使用Facebook登录到Rails应用程序。 这是“使用fb链接注册”：

<%= link_to "Sign in with FB", omniauth_authorize_path(resource_name, provider) %>

生成以下html：

<a href="/users/auth/facebook">Sign in with Facebook</a>

那应该带我去这个控制器：

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController

  before_action :test_if_in_right_controller

  def facebook
    puts "in the fb controller"
    # Attempt to find the User
    @user = User.find_for_facebook_oauth(request.env["omniauth.auth"], current_user)
    puts "1.  in fb.  user is #{@user.inspect}"
    if @user.persisted?
      puts "2. 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
      puts "3.  in else statement.  user did not persist."
      #session["devise.facebook_data"] = request.env["omniauth.auth"]
      redirect_to new_user_registration_url
    end
  end

  def passthru
    puts "in the passthru"
    render :file => "#{Rails.root}/public/404.html", :status => 404, :layout => false
  end

  def test_if_in_right_controller
    puts "in the before action"
  end

end

继承人的问题：

before_action之所以有效，是因为puts "in the before action"行出现在日志中。 但随后，控制器中的其他puts均无法正常工作。 真正奇怪的是实际上正在联系facebook，因为我收到以下错误：

E, [2015-11-04T08:44:36.357124 #1049] ERROR -- omniauth: (facebook) Authentication failure! invalid_credentials: OAuth2::Error, : 
{"error":{"message":"Error validating verification code. Please make sure your redirect_uri is identical to the one you used in the OAuth dialog request","type":"OAuthException","code":100,"fbtrace_id":"DAgHQ3MuN59"}}

这是完整的服务器日志

Started GET "/users/auth/facebook/callback?code=AQA-MlSTW1tu9NuiaRa73XpD2nJKOgEmdFjFq3dZMC0m48Eep04dbql-2I80Up9CBYTAD_D7NRG_sVLVjMWRlvDtWirDhZuv1XdVZQti3I-ljSYSoiXhcYsleIZnK9osNkuYAFhF40mqM44-fZAiAGME2ny2ISj0XQIw4vvJvQDUkhS1W1jssMmCJfJM1gLbsyjgz3X3kgMRMS6_i-DTreS-lQLamfL5Kv3ElUenLTlZsmNwb3aTzcFtIV6X_5-c5XrVEs-VMmNdtEPiUFccAa6aOfwzPeP_iEyWz2F38KlKgCpOVapLVzH_fjx_LN0XOTRwJxreDe66gDP1MbgRhGMiahxQaaGEDxgxDYy3bxKW-g&state=3de1318e2031f74043cb6bd387b1eda3b3ba244d749993c5" for 127.0.0.1 at 2015-11-04 08:44:36 -0500
I, [2015-11-04T08:44:36.141145 #1049]  INFO -- omniauth: (facebook) Callback phase initiated.
E, [2015-11-04T08:44:36.357124 #1049] ERROR -- omniauth: (facebook) Authentication failure! invalid_credentials: OAuth2::Error, : 
{"error":{"message":"Error validating verification code. Please make sure your redirect_uri is identical to the one you used in the OAuth dialog request","type":"OAuthException","code":100,"fbtrace_id":"DAgHQ3MuN59"}}
Processing by Users::OmniauthCallbacksController#failure as HTML
  Parameters: {"code"=>"AQA-MlSTW1tu9NuiaRa73XpD2nJKOgEmdFjFq3dZMC0m48Eep04dbql-2I80Up9CBYTAD_D7NRG_sVLVjMWRlvDtWirDhZuv1XdVZQti3I-ljSYSoiXhcYsleIZnK9osNkuYAFhF40mqM44-fZAiAGME2ny2ISj0XQIw4vvJvQDUkhS1W1jssMmCJfJM1gLbsyjgz3X3kgMRMS6_i-DTreS-lQLamfL5Kv3ElUenLTlZsmNwb3aTzcFtIV6X_5-c5XrVEs-VMmNdtEPiUFccAa6aOfwzPeP_iEyWz2F38KlKgCpOVapLVzH_fjx_LN0XOTRwJxreDe66gDP1MbgRhGMiahxQaaGEDxgxDYy3bxKW-g", "state"=>"3de1318e2031f74043cb6bd387b1eda3b3ba244d749993c5"}
in the before action
Redirected to http://localhost:3000/login
Completed 302 Found in 1ms (ActiveRecord: 0.0ms)

这是来自控制器的facebook方法中的User.find_for_facebook_oauth方法

def self.find_for_facebook_oauth(auth, signed_in_resource=nil)
  puts "in the fb model method".green
  user = User.where(provider: auth.provider, uid: auth.uid).first
  puts "1.  user is #{user.inspect}".green
  # The User was found in our database
  return user if user

  # Check if the User is already registered without Facebook
  user = User.where(email: auth.info.email).first
  puts "2.  user is already registered without fb.  #{user.inspect}".green
  return user if user

  # The User was not found and we need to create them
  new_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])

  puts "the new user is #{new_user.inspect}".green
end

在我的config / intitializers / devise.rb文件中，我有：

config.omniauth :facebook, ENV['APP_KEY'], ENV['FACEBOOK_SECRET_ID']

Answer 1

假设您正在本地计算机上进行测试，请在developers.facebook.com门户中，在应用程序设置->高级中，您应该为回调创建一个白名单：

http：// localhost：3000 / users / auth / facebook / callback