Ruby on rails Can'；t拉动谷歌&x2B；具有RoR的API数据

几个星期来我一直在处理这个问题，但我仍然没有找到解决办法。我的目标是

• 验证用户身份
• 拉取并显示他们的google+api数据

我曾尝试（未成功）改编google提供的google+ruby示例代码，但这对我来说并不正确。然而，我把它作为自己写作的基础。到目前为止，我有：

欢迎光临

class WelcomeController < ApplicationController
def index
require 'google/api_client'
require 'google/api_client/client_secrets'
require 'google/api_client/auth/installed_app'

$credentials = Google::APIClient::ClientSecrets.load

# Initialize the client.
$authorization = Signet::OAuth2::Client.new(
    :authorization_uri => $credentials.authorization_uri,
    :token_credential_uri => $credentials.token_credential_uri,
    :client_id => $credentials.client_id,
    :client_secret => $credentials.client_secret,
    :redirect_uri => $credentials.redirect_uris.first,
    :scope => 'https://www.googleapis.com/auth/plus.login')

@client = Google::APIClient.new(
    :application_name => 'X', #havent changed this at all
    :application_version => 'X' #havent changed this at all
    )

@client.authorization.update_token!(:access_token => 'X', :refresh_token => 'X')#havent changed this at all

# Initialize Google+ API. Note this will make a request to the
# discovery service every time, so be sure to use serialization
# in your production code. Check the samples for more details.
@plus = @client.discovered_api( "plus", "v1" )

# Make an API call.
@google_plus_info = @client.execute(
    :api_method => @plus.activities.list,
    :parameters => {'collection' => 'public', 'userId' => 'VALID USER ID HERE'} #I masked my own userid which I am using for testing
    )
render plain: "api call:\n#{@google_plus_info.data.title}"
end
end

---

因此，我假设显示标题值不会有问题。但是，我的输出为空（除了api调用：）我缺少什么？

您使用的是rails 4.1.x？是的，我使用的是rails 4.1.5。也在Chrome中测试，没有扩展。

{
"kind": "plus#activityFeed",
"etag": "\"BLAHBLAH\"",
"title": "Google+ List of Activities for Collection PUBLIC",
"updated": "2013-02-02T02:54:10.697Z",
....