Rails Devise Twitter OAuth重定向到表单继续oAuth注册 [英] Rails Devise Twitter OAuth redirect to form to continue oAuth registration

问题描述

我已经使用 omniauth-facebook 和 omniauth-google 成功实现了oAuth，但是我在执行 omniauth-twitter ，因为它不提供电子邮件地址。

I have successfully implemented oAuth with omniauth-facebook and omniauth-google but I am having difficulties with implementing omniauth-twitter as it does not provide an email address.

我通过互联网上的可用解决方案进行了搜索，一个解决方案指出了删除Devise的电子邮件验证，但我的应用程序需要电子邮件验证。

I searched through available solutions on the Internet and one solution pointed out at removing Devise's email validation but email validation is needed for my app.

我想要的是将用户重定向到新的表单，用户只需输入一个新的电子邮件地址即可完成他的oAuth注册，但我不知道如何将它与oAuth数据链接到完成注册，因为我提交表单时收到错误，因为用户名和密码不能为空，而只有电子邮件以该表单显示。

What I want instead is to redirect the user to a new form where the user only has to enter a new email address to complete his oAuth registration but I am not sure how to link it with the oAuth data to complete the registration as I am getting errors when I submit the form since username and password can't be blank from devise while only email is displayed in that form.

CallbackController

    def twitter
        @user = User.from_omniauth(request.env["omniauth.auth"])
        if @user.persisted?
          flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Twitter"
          sign_in_and_redirect @user, :event => :authentication
        else
          session["devise.twitter_data"] = request.env["omniauth.auth"].except("extra")
          redirect_to twitter_register_path 
        end
    end

twitter_register_path 包含视图，用户必须填写他的电子邮件地址才能完成注册。

twitter_register_path contains the view where the user has to fill in his email address to complete registration.

用户模型

def self.from_twitter_omniauth(auth,email)
   where(provider: auth["provider"], uid: auth["uid"]).first_or_create do |user|
      user.provider = auth["provider"]
      user.uid = auth["uid"]
      user.email = email
      user.name = auth["info"]["name"]
      user.password = Devise.friendly_token[0,20]
      user.remote_poster_image_url = auth["info"]["image"].gsub('http://','https://')
    end
end

Twitter注册表单（twitter_register_path）

<%= simple_form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
  <%= f.error_notification %>

  <div class="form-inputs">
    <%= f.input :email, required: true,label: false %>
  </div>

  <div class="signup">
    <%= f.button :submit, "Sign up",:class =>"register-button" %>
  </div>
<% end %>

即使Twitter API最近允许应用程序为其电子邮件请求其他权限，我不确定如何实现。

推荐答案

我终于设法以这种方式解决了。

I finally managed to solve it this way.

用户重定向后，如果是新用户，我们将为用户呈现一个表单 TwitterForm 输入一封电子邮件以完成注册。

After the user is redirected and if it's a new user, we will render a form TwitterForm for the user to input an email to complete the registration.

接下来，表单将提交给我们指定的自定义操作，在我的情况下，我把它放在 UsersController ，将使用Twitter会话数据和用户输入的电子邮件完成注册过程。

Next, the form will be submitted to a custom action that we specified, in my case I put it under UsersController that'll complete the sign up process using the Twitter session data and the email that the user inputted.

您不能放由于Devise的一些问题，CallbacksController内部的动作一起出现，我不确定为什么会出现错误。

You can't put the action together inside the CallbacksController due to some issues with Devise which I am unsure as to why there's an error.

设计回调控制器

 def twitter
        auth = request.env["omniauth.auth"]
        @user = User.where(provider: auth.provider, uid: auth.uid).first_or_create
        if @user.persisted?
            flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Twitter"
            sign_in_and_redirect @user, :event => :authentication
        else
            @form = TwitterForm.new 
            session["devise.twitter_data"] = request.env["omniauth.auth"].except("extra")
            render :layout => 'none'
        end
    end

UsersController

def twitter_register
    @form = TwitterForm.new(params[:twitter_form])
    if @form.valid?
      email = params[:twitter_form][:email]      
      @user = User.from_twitter_omniauth(session["devise.twitter_data"],email)
      if @user.persisted?
        flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Twitter"
        sign_in_and_redirect @user, :event => :authentication
      else
        redirect_to register_path 
      end
    else 
      render 'callbacks/twitter',layout: 'none'
    end
  end

TwitterForm

class TwitterForm
  include ActiveModel::Model
  attr_accessor :email
  validates :email, presence: true,:format => { :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/ }
end

用户模型

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

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