问题与Facebook Omniauth，设计与Ruby on Rails的

我已经走遍这些网页星期寻找一个答案。我是Ruby的新手，我跟着一个教程，并能够成功完成它，没有大惊小怪。我的问题是，当我决定通过使用Omniauth gem对Facebook用户进行身份验证以及完美运行的设计宝石来为我的应用添加更多功能时。问题与Facebook Omniauth，设计与Ruby on Rails的

我几乎知道该解决方案将是简单的训练有素的眼睛，但我很茫然，因为我已经尝试了不同程度的成功，在这个网站提出了许多建议和其他人。

我现在的问题是，只要用户尝试使用Facebook的登录，用户通过认证，但被重定向到注册页面。上周我在某个时间摆弄，并能够成功登录，但只有一次，随后不断重定向到注册页面。

我需要场景是这样的：

如果用户点击登录与Facebook链接时，他们应该重定向到Facebook的身份验证，然后发回给我的Ruby应用程序和电子邮件，FIRST_NAME值， last_name应该被添加到该用户的用户表中。

对于老用户，所有数据库值应检查和用户是不会引起大惊小怪自动登录。

我还想电子邮件唯一约束，以确保我们没有多的人使用相同的电子邮件。

我真的很感激某种方向在何处我得到它错了。像我上面提到的，我在这个空间中的总新手，因为我与IT基础设施的主要工作。

请参阅下面我的代码：

callbacks_controller.rb

class CallbacksController < Devise::OmniauthCallbacksController 
    def facebook 
    # You need to implement the method below in your model (e.g. 
    app/models/user.rb) 
@user = User.from_omniauth(request.env["omniauth.auth"]) 

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 

def failure 
    redirect_to root_path 
end

高清失败 redirect_to的root_path 结束结束

user.rb

class User < ApplicationRecord 
# Include default devise modules. Others available are: 
# :confirmable, :lockable, :timeoutable and :omniauthable 
devise :database_authenticatable, :registerable, 
    :recoverable, :rememberable, :trackable, :validatable, :omniauthable 
has_many :reviews, dependent: :destroy 

#validates :first_name, :last_name, presence: true 
devise :omniauthable, :omniauth_providers => [:facebook] 


def self.from_omniauth(auth) 
    where(email: auth.info.email).first_or_initialize.tap do |user| 
    user.email = auth.info.email 
    user.password = Devise.friendly_token[6,20] 
    user.first_name = auth.info.first_name 
    user.last_name = auth.info.last_name 
    user.save 
    end 


    end 

    end 

    def self.new_with_session(params, session) 
    super.tap do |user| 
    if data = session["devise.facebook_data"] && session["devise.facebook_data"] 
    ["extra"]["raw_info"] 
    user.email = data["email"] if user.email.blank? 
    user.first_name = data["first_name"] if user.first_name.blank? 
    user.last_name = data["last_name"] if user.last_name.blank? 
    end 
    end 
    end

routes.r b

Rails.application.routes.draw do 

    devise_for :users, :controllers => { :omniauth_callbacks => "callbacks"} 
    resources :hospitals do 
    collection do 
    get 'search' 
    end 
    resources :reviews, except: [:show, :index] 
    end 



    get 'pages/Hospitals' 

    get 'pages/Labs' 

    get 'pages/Doctors' 

    get 'pages/about' 

    get 'pages/contact' 

    root'hospitals#index' 



    # For details on the DSL available within this file, see 
    http://guides.rubyonrails.org/routing.html 
    end

控制台响应

Started GET "https://stackoverflow.com/users/auth/facebook" for ::1 at 2017-06-13 14:02:29 +0100 
I, [2017-06-13T14:02:29.142018 #8385] INFO -- omniauth: (facebook) Request 
phase initiated. 
Started GET "https://stackoverflow.com/users/auth/facebook" for ::1 at 2017-06-13 14:02:29 +0100 
I, [2017-06-13T14:02:29.488425 #8385] INFO -- omniauth: (facebook) Request 
phase initiated. 
Started GET "https://stackoverflow.com/users/auth/facebook/callback 
code=AQAJ33qxsDJhSh2fKc8YH9YANZwK2BagO3fotR22iw3 
cOeTN5G2HSvXbOioiwaQmwrZB3EEZKZBWlBAK4c 
RVyddoG8oaeLQfEXjA0FPOvZtpw0XiuBGwOJIh7YaDSjt7O33Dn2mB7Vlu2YUaT- 
DxlY3ioOVhNx8ymCE6TMGJx0slL-NvMB8b52IHSheMvPYTcMAoj2WXPgrLK8aH0eox_ 
7VbD8zaV0QFeJxqask3gaU4GTkGI50liO2SdF 
T9fyFVWTgfORNP0yhwoH3HNlMGIznqSqbRGB43d 
2qULNHglH6exDMCzgpyhD3Bmi2lxzcLc10" 
    for ::1 at 2017-06-13 14:02:29 +0100 
I, [2017-06-13T14:02:29.731093 #8385] INFO -- omniauth: (facebook) Callback 
phase initiated. 
Processing by CallbacksController#facebook as HTML 
Parameters: 
{"code"=>"AQAJ33qxsDJhSh2fKc8YH9YANZwK2BagO3 
fotR22iw3cOeTN5G2HSvXbOioiwaQmwrZB3EEZK 
ZBWlBAK4cRVyddoG8oaeLQfEXjA0FPOvZtpw0XiuBGwOJIh7YaDSjt7O33Dn2mB7Vlu2YUaT- 
DxlY3ioOVhNx8ymCE6TMGJx0slL- 
NvMB8b52IHSheMvPYTcMAoj2WXPgrLK8aH0eox_ 
7VbD8zaV0QFeJxqask3gaU4GTkGI50liO2SdFT9fy 
FVWTgfORNP0yhwoH3HNlMGIznqSqbRGB43d2qULNHglH6exDMCzgpyhD3Bmi2lxzcLc10"} 
    User Load (0.3ms) SELECT "users".* 
    FROM "users" WHERE "users"."email" IS NULL 
    ORDER BY "users"."id" ASC LIMIT ? [["LIMIT", 1]] 
    (0.2ms) begin transaction 
    (0.1ms) rollback transaction 
    Redirected to http://localhost:3000/users/sign_up 
    Completed 302 Found in 265ms (ActiveRecord: 0.6ms)

新控制台响应

User Load (1.0ms) SELECT "users".* FROM "users" WHERE "users"."provider" = ? 
    AND 
    "users"."uid" = ? ORDER BY "users"."id" ASC LIMIT ? [["provider", 
    "facebook"], ["uid", "104903843446146"], ["LIMIT", 1]] (0.1ms) begin 
    transaction (0.1ms) rollback transaction Redirected to 
    localhost:3000/users/sign_up

来源

2017-06-13 Oluwaseun Morafa

尝试以下代码：

def facebook 
    @user = User.from_omniauth(request.env["omniauth.auth"]) 
     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

模型

def self.from_omniauth(auth) 
     where(provider: auth.provider, uid: auth.uid).first_or_create do |user| 
     user.email = auth.info.email 
     user.password = Devise.friendly_token[0,20] 
     end 
    end

来源

2017-06-13 08:35:46 puneet18

我刚刚尝试了上面的代码并得到了相同的响应。 –

还没有登录后用facebook登录？ – puneet18

不，我不是。它只是重定向到注册页面。 –

问题与Facebook Omniauth，设计与Ruby on Rails的

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