ruby-on-rails – omniauth-facebook cannnot获取电子邮件地址

并设置我的Facebook应用程序,作为测试环境.

所以,我通过Facebook登录并注册了我的新Rails应用程序,但request.env没有包含电子邮件地址.info.

这是返回request.env [‘omniauth.auth’]

{
   "provider" => "facebook","uid" => "xxxxxxxxxxxx","info" => {
         "name" => "xxxxxxx","image" => "http://graph.facebook.com/xxx/picture"
    },"credentials" => {
             "token" => "tokenstring","expires_at" => xxxxxxxxx,"expires" => true
    },"extra" => {
        "raw_info" => {
            "name" => "xxx xxxx","id" => "xxxxxxxxx"
        }
    }
}

它架子request.env [‘omniauth.auth’] [‘info’] [’email’]

如何通过oauth从Facebook获取电子邮件地址？请有人帮我

Rails ver为4.2.3
Ruby ver是2.2.2p95

这是宝石版本

omniauth (1.2.2)
 omniauth-facebook (2.0.1)
 devise (3.5.1)

配置/初始化/ devise.rb

config.omniauth :facebook,'appId','appSeacret',scope: 'email,public_profile'

应用程序/控制器/ omniauth_callbacks_controller.rb

def all_provider
    user = User.from_omniauth(request.env['omniauth.auth'])
    if user.persisted?
      sign_in_and_redirect user
    else
      session['devise.user_attributes'] = user.attributes
      redirect_to new_user_registration_url
    end
  end

  alias_method :facebook,:all_provider

应用程序/模型/ user.rb

def from_omniauth(auth)
  where(provider: auth.provider,uid: auth.uid).first_or_create do |user|
    user.email = auth.info.email
  end
end

在2015/7/11添加

我用旧的测试Facebook应用程序重试了相同的代码,并且可以获得完整的public_profile和电子邮件.

是否添加新的Facebook应用程序的任何限制？有人知道吗