我正在使用 Rails 构建社交登录，并且已成功将其与 Google 和 Facebook 集成。所以，我对 Twitter 也这样做。但我无法在登录 Twitter 后重定向到我的应用程序。我收到如下错误：

activeRecord::RecordInvalid in Users::OmniauthCallbacksController#twitter 验证失败：Email 不能为空，Email 不能为空，Email 无效

这是我在控制器中的代码：

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
  def facebook
    generic_callback("facebook")
  end

  def google_oauth2
    generic_callback("google_oauth2")
  end

  def twitter
    generic_callback("twitter")
  end

  def generic_callback provider
    @user = User.from_omniauth(request.env["omniauth.auth"])
    if @user.persisted?
      log_in @user
      flash[:success] = t("users.new.welcome")
      redirect_to @user
    else
      flash[:error] = t("sessions.new.error")
      redirect_to root_url
    end
  end

  def failure
    redirect_to root_path
  end
end

模型中获取数据的部分代码

# Generate data from the social
  def self.from_omniauth(auth)
    user = User.where(email: auth.info.email).first
    password = Devise.friendly_token[0,20]
    user ||= User.create!(provider: auth.provider,uid: auth.uid,email: auth.info.email,name: auth.info.name,password: password,password_confirmation: password)
  end

并在文件中配置 devise.rb

config.omniauth :google_oauth2,ENV["CLIENT_ID"],ENV["CLIENT_SECRET"],scope: "email",info_fields: "email,name"
config.omniauth :facebook,ENV["FACEBOOK_ID"],ENV["FACEBOOK_SECRET"],name"
config.omniauth :twitter,ENV["TWITTER_ID"],ENV["TWITTER_SECRET"],name"