带有设计的 Omniauth-facebook：“缺少通道”错误

Question

我安装了 Devise 身份验证，没有任何问题。现在我正在尝试添加一个使用 Omniauth-facebook 登录 Facebook 的选项。

我按照this guide 中的说明进行操作，但在访问网址localhost:3000/auth/facebook 时，我收到有关缺少“Passthru”文档的错误。

这是我得到的第一个错误：

Unknown action
The action 'passthru' could not be found for RegistrationsController

我尝试通过向我的控制器添加一个空的“passthru”操作来进行创可贴修复：

def passthru
end

这解决了这个错误，但我得到了一个不同的回报：

Template is missing
Missing template registrations/passthru, devise/registrations/passthru, devise/passthru, application/passthru with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in: * "/home/user/project/app/views" * "/home/user/.rvm/gems/ruby-2.0.0-p648@railstutorial_rails_4_0/gems/devise-3.5.2/app/views"

我尝试在所述文件夹中创建“passthru.html.erb”，但该错误仍然存​​在。无论如何，我认为这些错误象征着更深层次的问题。

还有其他人遇到过这个问题吗？我只能在上面找到this SO question，但没有一个答案有帮助。

---

到目前为止我的代码：

宝石文件

gem 'devise'
gem 'omniauth-facebook'
gem 'omniauth'

routes.rb

devise_for :members, controllers: { registrations: 'registrations', omniauth_callbacks: 'registrations' }

member.rb

  devise :database_authenticatable, :registerable,
         :omniauthable, :omniauth_providers => [:facebook]


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

registrations_controller.rb

  def facebook
    @member = Member.from_omniauth(request.env["omniauth.auth"])
    if @member.persisted?
      sign_in_and_redirect @member, :event => :authentication
      set_flash_message(:notice, :success, :kind => "Facebook") if is_navigational_format?
    else
      session["devise.facebook_data"] = request.env["omniauth.auth"]
      redirect_to new_member_registration_url
    end
  end

  def failure
    redirect_to root_path
  end

  def passthru
  end

initializers/devise.rb

config.omniauth :facebook, "<app_id>", "<app_secret>"

Answer 1

Passthru 是来自omniauth 的遗物，更新您的设计omniauth 等宝石。 有一个名为 omiauth_callback 的控制器，这是发出噪音的控制器；P.（可以帮助您追踪问题的根源）

如果你像这样在控制器中创建一个方法： def passthru end 您必须使用（甚至是空的）或重定向创建视图：从 ajax 技术中获得灵感以绕过 html 渲染。 希望它能让你走上解决问题的道路。

也试试这些路线： ``` user_omniauth_authorize /users/auth/:provider(.:format) 会话#passthru {:provider=>/facebook|twitter|google/}

user_omniauth_callback /users/auth/:action/callback(.:format) 会话#(?-mix:facebook|twitter|google) ```

Answer 2

试试这个：

更新 GemFile：

gem 'omniauth-facebook'
gem 'omniauth'

转到 rails_apps/yourapp/config/initializers/devise.rb

Devise.setup do |config|
   config.omniauth :facebook, "KEY", "SECRET"
 end

更新用户模型

class User < ActiveRecord::Base

         devise :database_authenticatable, :registerable,
        :recoverable, :rememberable, :trackable, :validatable,
    :omniauthable, :omniauth_providers => [:facebook]

     def self.from_omniauth(auth)
         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.password = Devise.friendly_token[0,20]
         end
     end
    end

转到：rails_apps/yourapp/config/routes.rb

Rails.application.routes.draw do
  devise_for :users
  resources :users
end

在视图中编辑

 <%= link_to "Sign in with Facebook", "/auth/facebook", id: "sign_in" %>

Answer 3

试试这个……

config/initializers/devise.rb

config.omniauth :facebook, ENV["FACEBOOK_KEY"], ENV["FACEBOOK_SECRET"], { :scope => 'email, offline_access'}

config/routes.rb

devise_for :members, controllers: { registrations: 'registrations', omniauth_callbacks: "omniauth_callbacks" }

app/models/member.rb

devise :database_authenticatable, :registerable,
      :recoverable, :rememberable, :trackable, :validatable, :omniauthable


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

app/controllers/omniauth_callbacks_controller.rb

  skip_before_filter :authenticate_user!

  def facebook
    p env["omniauth.auth"]
    user = User.from_omniauth(env["omniauth.auth"])
    if user.persisted?
      flash[:notice] = "You are in..!!!"
      sign_in_and_redirect(user)
    else
      session["devise.user_attributes"] = user.attributes
      redirect_to new_user_registration_url
    end
  end

  def failure
    #handle you logic here..
    #and delegate to super.
    super
  end

希望这对你有用。

Answer 4

您可以为Omniauth callback 创建另一个控制器

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"]
      redirect_to new_user_registration_url
    end
  end


  def after_sign_in_path_for(resource)
    super resource
  end

end

您需要将路线重置为

devise_for :members, :controllers => {:registrations => "members/registrations", :omniauth_callbacks => 'omniauth_callbacks'}

我记得你不需要在member.rb 中使用:omniauth_providers => [:facebook]

现在您可以在 sign_up page 中添加一个按钮，或者在您的 devise/shared/_links.html.erb 中包含以下代码，因为它也可以在您的登录表单中使用。

<%- if devise_mapping.omniauthable? %>
  <%- resource_class.omniauth_providers.each do |provider| %>
    <%= link_to "Sign up with #{provider.to_s.titleize}", omniauth_authorize_path(resource_name, provider), class: "btn btn-default navbar-btn" %><br />
  <% end -%>
<% end -%>

你还需要在初始化器中配置设计

在你的/config/initializers/devise.rb

config.omniauth :facebook, "App ID", "App Secret", scope: 'email', info_fields: 'email,name'

请通过 facebook Link 阅读这个最简单的 Sing_up 教程