ruby-on-rails - 用于 Facebook 的 omniauth.auth 未返回完整哈希值且无法使用 facebook 成功登录

Question

我正在研究来自 http://www.theodinproject.com/ruby-on-rails/final-project 的 facebook 克隆项目.

我受困于 omniauth-facebook 部分，无法成功登录 facebook。我认为问题可能是由于 request.env["omniauth.auth"]。当我尝试提出 request.env["omniauth.auth"].to_yaml 时。我得到以下不完整的哈希值。它缺少很多信息，例如 first_name、last_name、gender 等。

--- !ruby/hash:OmniAuth::AuthHash
provider: facebook
uid: '10206926404981253'
info: !ruby/hash:OmniAuth::AuthHash::InfoHash
  name: Thomas Pan
  image: http://graph.facebook.com/10206926404981253/picture
credentials: !ruby/hash:OmniAuth::AuthHash
  token: <token>
  expires_at: 1442277104
  expires: true
extra: !ruby/hash:OmniAuth::AuthHash
  raw_info: !ruby/hash:OmniAuth::AuthHash
    name: Thomas Pan
    id: <id>

** 为了安全起见，用 <> 替换了一些信息。

我也在使用它和设计。

其他一切似乎都已正确设置，因为我已按照此处的说明进行设计和 omniauth-facebook。 https://github.com/plataformatec/devise/wiki/OmniAuth:-Overview

用户.rb

devise :database_authenticatable, :registerable,
   :recoverable, :rememberable, :trackable, :validatable,
   :omniauthable, :omniauth_providers => [:facebook]

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.first_name = auth.info.first_name
    user.last_name = auth.info.last_name
    user.gender = auth.extra.raw.gender
  end  
end  

设计.rb

config.omniauth :facebook, ENV['FB_APP_ID'], ENV['FB_APP_SECRET']

路线.rb

devise_for :users, :controllers => { :registrations => "users/registrations", :omniauth_callbacks => "users/omniauth-callbacks" }

omniauth_callbacks_controller.rb

def facebook
  raise request.env['omniauth.auth'].to_yaml
  end
end

如有任何帮助，我们将不胜感激!

版本信息: rails 4.2.1 ruby 2.0.0

Answer 1

在 devise.rb 中:

config.omniauth :facebook, ENV['FB_APP_ID'], ENV['FB_APP_SECRET'], scope: 'email', info_fields: 'email,name,first_name,last_name,gender'