ruby-on-rails - "Not found. Authentication passthru."错误。设计 Omniauthable 模块不会在另一个引擎中使用 't work when it' s

Question

我尝试按照本指南将 Devise 放入另一个可安装的 gem 中: How To: Use devise inside a mountable engine .

除了 omniauth 部分外，一切似乎都运行良好。我正在尝试获取 omniauth-google-oauth2上类。我发现 it's a known issue in Devise ，但除了建议的解决方案均无效之外，我注意到该问题中提到的解决方案 has already been implemented inside Devise .

这是我到目前为止所做的:

my_engine/my_engine.gemspec

s.add_dependency 'omniauth'
s.add_dependency 'devise'
s.add_dependency 'omniauth-google-oauth2'

my_engine/lib/my_engine.rb

require 'omniauth-google-oauth2'
require 'devise'

my_engine/config/initializers/devise.rb

config.omniauth :google_oauth2, ENV['GOOGLE_OAUTH2_API_KEY'], ENV['GOOGLE_OAUTH2_SECRET'], scope: 'email, profile'

my_engine/config/routes.rb

devise_for :users, controllers: {omniauth_callbacks: 'my_engine/omniauth_callbacks'}, class_name: "MyEngine::User", module: :devise

my_engine/app/controllers/my_engine/omniauth_callbacks_controller.rb

class MyEngine::OmniauthCallbacksController < Devise::OmniauthCallbacksController
  def all
    auth = request.env["omniauth.auth"]
    user = MyEngine::User.from_omniauth(request.env["omniauth.auth"])
    user.update_attributes(name: auth.info.name)
    if user.persisted?
      flash.notice = 'Signed in!'
      sign_in_and_redirect user
    else
      session["devise.user_attributes"] = user.attributes
      redirect_to new_user_registration_url
    end
  end
  alias_method :google_oauth2, :all
end

当我单击“使用 Google OAuth2 登录”时，它会直接转到 MyEngine::OmniauthCallbacksController#passthru 并输出“未找到。身份验证通过”。我一直在挖掘源代码，但我无法弄清楚 Devise 如何让它通过提供者方法而不是 #passthru。我在这里错过了什么吗？我在 Rails 4.1、Ruby 2.0、devise 3.2.4 和 omniauth-oauth2 1.2.0 上运行。

Answer 1

我也遇到过这个问题。我使用的版本与您链接到的 github 问题页面上讨论的解决方案非常相似，但不完全相同(我在下面的代码中稍微调整了我所做的，因为我还有一个自定义 :path 在我的 devise_for 中指定)。此外，我目前正在使用 devise 3.1.2，但希望它与以下内容足够相似以供您使用。

在my_engine/config/routes.rb中:

devise_for :users, :class_name => 'MyEngine::User', :module => :devise, :controllers => { :omniauth_callbacks => "my_engine/omniauth_callbacks" }

devise_scope :user do
  # Had to add routes for callbacks here because otherwise the routes get
  # messed up -- prepending an extra "/my_engine" in one case.
  providers = Regexp.union(Devise.omniauth_providers.map(&:to_s))

  path_prefix = '/users/auth'

  match "#{path_prefix}/:provider",
    :constraints => { :provider => providers },
    :to => "omniauth_callbacks#passthru",
    :as => :user_omniauth_authorize,
    :via => [:get, :post]

  match "#{path_prefix}/:action/callback",
    :constraints => { :action => providers },
    :to => 'omniauth_callbacks',
    :as => :user_omniauth_callback,
    :via => [:get, :post]
end

在 my_engine/config/initializers/devise.rb 中:

config.router_name = :my_engine
config.omniauth_path_prefix = "/my_engine/users/auth"

其中一些可能是不必要的，但在花了一些时间使用调试器逐步完成流程后，我让它像这样工作，并且没有时间回过头来尝试让它更优雅/精简或其他任何东西。