ruby-on-rails - Rails omniauth 不刷新数据

Question

我正在使用 omniauth-twitter gem 对用户进行身份验证，并在我的 User.rb 文件中填写姓名、头像等

  def self.from_omniauth(auth)
    where(auth.slice("provider", "uid")).first || create_from_omniauth(auth)
  end

  def self.create_from_omniauth(auth)
    create! do |user|
      user.provider = auth["provider"]
      user.uid = auth["uid"]
      user.name = auth["info"]["name"]
      user.nickname = auth["info"]["nickname"]
      user.location = auth["info"]["location"]
      user.image = auth["info"]["image"].sub("_normal", "")
      user.description = auth["info"]["description"]
    end
  end
end

效果很好，除了我碰巧在 Twitter 上更改了我的头像，并注意到即使在我注销并重新授权后数据也不会改变。如果位置、图像、描述等数据在用户每次登录时都得到刷新，那就太好了。

Answer 1

好吧，该逻辑的运作取决于您。这是一个可能的解决方案示例:

def self.from_omniauth(auth)
  user = find_by(auth.slice(:provider, :uid)) || initialize_from_omniauth(auth) # Rails 4
  user = where(auth.slice(:provider, :uid)).first || initialize_from_omniauth(auth) # Rails 3
  user.update_dynamic_attributes(auth)
end

def self.initialize_from_omniauth(auth)
  new do |user|
    user.provider = auth[:provider]
    user.uid = auth[:uid]
    user.name = auth[:info][:name]
  end
end

def update_dynamic_attributes(auth)
  self.location = auth[:info][:location]
  self.image = auth[:info][:image]
  self.description = auth[:info][:description]
  save!
  self
end

此外，您不必这样做:

auth["info"]["image"].sub("_normal", "")

如果您使用 image_size option，omniauth-twitter gem 已经可以为您做到这一点:

OmniAuth::Builder do
  provider :twitter, ENV["TWITTER_KEY"], ENV["TWITTER_SECRET"], {
    :image_size => 'original'
  }
end