红宝石在轨道上

我在Ruby on Rails上使用Devise + OAuth。

我已经修改了ApplicationController中的after_sign_in_path，如下所示：

def after_sign_in_path_for(resource)
  if session[:longitude]
    puts user_signed_in?
    new_questionnaire_path
  else
    super
  end
end

当它被调用时，日志输出：

true
Redirected to http://localhost:3000/questionnaires/new

我对新调查问卷的路线有以下几点：

  def require_login
      unless current_user
        redirect_to new_user_registration_path, notice: 'Please sign in to get started!'
      end
  end

用户第一次通过OAuth登录时，current_user以某种方式变为零，并且日志显示以下内容：

Started GET "/questionnaires/new" for 127.0.0.1 at 2018-01-06 17:30:50 -0800
Processing by QuestionnairesController#new as HTML
User Load (0.4ms)  SELECT  "users".* FROM "users" WHERE "users"."id" IS NULL 
ORDER BY "users"."id" ASC LIMIT $1  [["LIMIT", 1]]
Redirected to http://localhost:3000/users/sign_up
Filter chain halted as :require_login rendered or redirected

如果用户再次登录，它们将被重定向到new_questionnaire_path，并且不会再次点击before_action。

为什么会发生这种情况？

编辑：这是我的OmniAuthCallbacksController的内容。 我不认为这是相关的，因为after_sign_in_path_for（resource）在sign_in_with（provider_name）之后被调用，但也许我错过了一些东西？

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
skip_before_action :verify_authenticity_token

  def sign_in_with(provider_name)
    @user = User.from_omniauth(request.env["omniauth.auth"])
    @user.profile
    sign_in_and_redirect @user, :event => :authentication
    set_flash_message(:notice, :success, :kind => provider_name) if 
    is_navigational_format?
  end

  def facebook
    sign_in_with "Facebook"
  end

  def linkedin
    sign_in_with "LinkedIn"
    @user.linked_in_data = request.env["omniauth.auth"]
    @user.save
    @profile = Profile.find_by_user_id(@user.id)
    @profile.first_name = @user.linked_in_data['info']['first_name']
    @profile.last_name = @user.linked_in_data['info']['last_name']
    @profile.title = @user.linked_in_data['info']['description']
    @profile.industry = @user.linked_in_data['extra']['raw_info']['industry']
    @profile.save
  end

  def twitter
    sign_in_with "Twitter"
  end

  def google_oauth2
    sign_in_with "Google"
  end

  def developer
    sign_in_with "Developer"
  end

end

---

您需要遵循oauth设计实现的说明。

class Users::OmniauthCallbacksController < 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
end

我想问你，你在哪里找到这个代码。 主要的问题是，在User.from_omniauth之后我没有看到error handling的逻辑，所以也许有些东西在那里失败并且不会触发错误。

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
skip_before_action :verify_authenticity_token

  def sign_in_with(provider_name)
    @user = User.from_omniauth(request.env["omniauth.auth"])
    @user.profile
    sign_in_and_redirect @user, :event => :authentication
    set_flash_message(:notice, :success, :kind => provider_name) if 
    is_navigational_format?
  end

我无法深入了解您的问题（登录后重定向），因为我觉得您的逻辑错误。 例如，如果您使用def linkedin log in ，即使用户未注册，我也将始终运行@profile.first_name和@profile.save ，但使用@user = User.from_omniauth(request.env["omniauth.auth"])

 def linkedin
    sign_in_with "LinkedIn"
    @user.linked_in_data = request.env["omniauth.auth"]
    @user.save
    @profile = Profile.find_by_user_id(@user.id)
    @profile.first_name = @user.linked_in_data['info']['first_name']
    @profile.last_name = @user.linked_in_data['info']['last_name']
    @profile.title = @user.linked_in_data['info']['description']
    @profile.industry = @user.linked_in_data['extra']['raw_info']['industry']
    @profile.save
  end

这是self.from_omniauth(auth)方法

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]
    user.name = auth.info.name   # assuming the user model has a name
    user.image = auth.info.image # assuming the user model has an image
    # If you are using confirmable and the provider(s) you use validate emails, 
    # uncomment the line below to skip the confirmation emails.
    # user.skip_confirmation!
  end
end

---

我能够通过根据Fabrizio的建议添加错误处理来解决此问题，该建议显示@ user.persisted？ 正在返回假。

puts @ user.errors.to_a告诉我“密码不能为空”，我没有意识到是这种情况，所以我在user.password = Devise.friendly_token [0,20]中加入了self.from_omniauth方法我的用户模型，解决了这个问题。

我仍然不完全明白的是，如何将用户添加到数据库而同时@ user.persisted？ 正在返回假。

下面显示的是我更新后的控制器，包括错误处理，我用来查找问题来源的puts语句，以及代码，仅针对Fabrizio的出色建议的第一个签名执行Profile更新。

具有特别敏锐眼光的读者也可能会注意到，sign_in_with方法中的“@ user.profile”行已被删除。 这个方法用于在用户初次注册时为用户创建一个配置文件，但是我意识到将它作为用户模型中的after_create方法做得更干净，所以我也这样做了。

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
  skip_before_action :verify_authenticity_token

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

    puts @user.errors.to_a

    if @user.persisted?
      sign_in_and_redirect @user, :event => :authentication
      set_flash_message(:notice, :success, :kind => provider_name) if is_navigational_format?
    else
      session["devise.#{provider_name}_data"] = request.env["omniauth.auth"]
      redirect_to new_user_registration_url
    end
  end

  def facebook
    sign_in_with "Facebook"
  end

  def linkedin
    sign_in_with "LinkedIn"
    @user.linked_in_data = request.env["omniauth.auth"]
    @user.save

    if @user.sign_in_count == 1
      @profile = Profile.find_by_user_id(@user.id)
      @profile.first_name = @user.linked_in_data['info']['first_name']
      @profile.last_name = @user.linked_in_data['info']['last_name']
      @profile.title = @user.linked_in_data['info']['description']
      @profile.industry = @user.linked_in_data['extra']['raw_info']['industry']
      @profile.save
    end

  end

  def twitter
    sign_in_with "Twitter"
  end

  def google_oauth2
    sign_in_with "Google"
  end

  def developer
    sign_in_with "Developer"
  end

  def failure
    redirect_to root_path
  end

end

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