Ruby on rails 3 如何使用omniauth+从Rails 3应用程序访问Google Drive；omniauth谷歌应用程序

我正在尝试使用gem访问googledrive，但没有成功。该gem有一个使用auth登录的选项，但我不知道如何从omniauth获取访问令牌。返回的架构为

这是我的密码

在models/user.rb中

def self.create_with_omniauth(auth, role = 'user')
  create! do |user|
    user.email = auth['info']['email']
    user.first_name = auth['info']['first_name']
    user.last_name = auth['info']['last_name']
    user.google_token = auth['credential']['token']
    user.google_secret = auth['credential']['secret']
    user.role = Role.where(:account_type => role).first_or_create
  end
end

在控制器/会话中\u coontroller.rb

auth = request.env["omniauth.auth"]
email = auth['info']['email']
user = User.find_by_email(email) || User.create_with_omniauth(auth)

def index
  session = GoogleDrive.login_with_oauth(current_user.google_tocken)
  for file in session.files
    @docs << file
  end
end

和在控制器/文档\u controller.rb中

auth = request.env["omniauth.auth"]
email = auth['info']['email']
user = User.find_by_email(email) || User.create_with_omniauth(auth)

def index
  session = GoogleDrive.login_with_oauth(current_user.google_tocken)
  for file in session.files
    @docs << file
  end
end

def索引
session=GoogleDrive.login\u with\u oauth（当前用户.google\u tocken）
对于session.files中的文件
@文件