omniauth - request.env['omniauth.oauth'] 返回 nil

Question

我正在使用omniauth-google-oauth2 gem 来授权google 帐户，并获取授权码，但即使将gem 升级到最新版本后， request.env['omniauth.auth'] 仍为nil 。

ruby_version: 2.4.9
rails _version: 4.2.8

我的宝石文件

gem 'omniauth', '1.9.1'
gem 'omniauth-oauth2', '1.7.0'
gem 'omniauth-google-oauth2', '0.8.0'

全域认证.rb

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :google_oauth2, 'MY_GOOGLE_CLIENT_ID', 'MY_GOOGLE_SECRET',  {
    scope: 'email, profile',
    access_type: "offline",
    approval_prompt: "force",
    prompt: 'select_account',
    redirect_uri: 'http://localhost:3000/auth/google-oauth2/callback'
  }

结尾

路线.rb

get 'auth/google_oauth2/callback', to: 'social_accounts#create_account'

socual_accounts_controller.rb

class Api::V1::SocialAccountsController < ApplicationController

def create_account
  request_params = request.env["omniauth.auth"] # gives nil
end

end

是否可以从授权码中获取 access_token 和 refresh_token ？这也会有很大帮助

提前致谢