Question

我们是rails的新手，并希望在我们的主页上使用Javascript SDK“Connect with Facebook”按钮。在我们的应用程序中使用此按钮，我们希望允许用户通过Facebook注册我们的网站，并能够使用他们的Facebook个人资料图片作为我们的网络应用程序的个人资料图片。

使用我们的Rails 3应用程序实现此Facebook连接的最佳方式是什么？

  devise_for :users

  resources :authentications

  resources :users do
      member do
        get :following, :followers
      end
  end
  resources :sessions,   :only => [:new, :create, :destroy]
  resources :microposts, :only => [:create, :destroy]
  resources :relationships, :only => [:create, :destroy]

  match '/signup',  :to => 'users#new'
  match '/signin',  :to => 'sessions#new'
  match '/signout', :to => 'sessions#destroy'
  match '/contact', :to => 'pages#contact'
  match '/home',   :to => 'pages#home'
  match '/help',    :to => 'pages#help'
  match '/feedback',    :to => 'pages#feedback'
  match '/privacy',    :to => 'pages#privacy'
  match '/terms',    :to => 'pages#terms'
  match '/',        :to => 'pages#home'

  resources :microposts

  resources :users
  resources :sessions, :only => [:new, :create, :destroy]


  root :to => 'pages#home'

  match "/auth/twitter/callback" => "sessions#omnicreate"
  match "/auth/facebook/callback" => "sessions#omnicreate"


end

SessionsController

class SessionsController < ApplicationController

  def new
    @title = "Sign in"
  end

  def create
      user = User.authenticate(params[:session][:email],
                           params[:session][:password])
      if user.nil?
        flash.now[:error] = "Invalid email/password combination."
        @title = "Sign in"
        render 'new'
      else
        sign_in user
        redirect_back_or user
      end
  end

  def destroy
        sign_out
        redirect_to root_path
  end
end

Answer 1

omniauth gem是通过第三方服务设置身份验证的好方法。他们有Facebook策略。我已经习惯了它，设置起来很简单。只需将api密钥粘贴在rails初始化程序中即可。

Answer 2

看起来你需要做几件事：

更改路线文件中的以下行：

  root :to => 'pages#home'

  match "/auth/twitter/callback" => "sessions#omnicreate"
  match "/auth/facebook/callback" => "sessions#omnicreate"

对此：

  match "/auth/:provider/callback" => "sessions#omnicreate"

  root :to => 'pages#home' # this one should always be last

Twitter和Facbook都采用相同的方法，因此您需要稍后获取:provider参数，以确定其Twitter或Facebook是否发送了它们。

接下来，您需要在SessionsController中创建一个接收回调的方法，如下所示：

def omnicreate

  data = request.env['omniauth.auth'] # here is all the user data
  if params[:provider] == 'twitter'
     #parse twitter data
  elsif params[:provider] == 'facebook'
     #parse fb data
  else
     # something is broken
     redirect_to '/404.html'
  end

  user = User.create! #use data you parsed to create a user
  redirect_to some_path, :notice => 'awwww yeah'
end

祝你好运！

Rails 3 app - 与Facebook连接的最佳方式

2 个答案: