facebook omniauth登录与rails/devise不工作，因为错误验证验证码

Question

我想让我的用户使用Facebook登录到rails应用程序。这里是 “签了FB链接”：

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

这会生成以下HTML：

<a href="https://*.com/users/auth/facebook">Sign in with Facebook</a> 

这应该送我到这个控制器：

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正在工作，因为puts "in the before action"行出现在日志中。但是然后控制器中的其他puts都没有工作。什么是真正奇怪的是，Facebook的实际被接触，因为我得到以下错误：

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"}} 

下面是完整的服务器日志

Started GET "https://*.com/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) 

下面是从Facebook的方法User.find_for_facebook_oauth方法控制器

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 

在我的骗局图/ intitializers/devise.rb文件，我有：

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

Answer 1

假设你正在测试在本地计算机上，在developers.facebook.com门户网站，在您的应用程序设置 - >高级，你应该有一个白名单您的回调：

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