【发布时间】:2013-11-22 02:12:30
【问题描述】:
我正在尝试使用这个Ruby Google Analytics API Dashing widget,其 Ruby 文件是
require 'google/api_client'
require 'date'
# Update these to match your own apps credentials
service_account_email = '[YOUR SERVICE ACCOUNT EMAIL]' # Email of service account
key_file = 'path/to/your/keyfile.p12' # File containing your private key
key_secret = 'notasecret' # Password to unlock private key
profileID = '[YOUR PROFILE ID]' # Analytics profile ID.
# Get the Google API client
client = Google::APIClient.new(:application_name => '[YOUR APPLICATION NAME]',
:application_version => '0.01')
# Load your credentials for the service account
key = Google::APIClient::KeyUtils.load_from_pkcs12(key_file, key_secret)
client.authorization = Signet::OAuth2::Client.new(
:token_credential_uri => 'https://accounts.google.com/o/oauth2/token',
:audience => 'https://accounts.google.com/o/oauth2/token',
:scope => 'https://www.googleapis.com/auth/analytics.readonly',
:issuer => service_account_email,
:signing_key => key)
# Start the scheduler
SCHEDULER.every '1m', :first_in => 0 do
# Request a token for our service account
client.authorization.fetch_access_token!
# Get the analytics API
analytics = client.discovered_api('analytics','v3')
# Start and end dates
startDate = DateTime.now.strftime("%Y-%m-01") # first day of current month
endDate = DateTime.now.strftime("%Y-%m-%d") # now
# Execute the query
visitCount = client.execute(:api_method => analytics.data.ga.get, :parameters => {
'ids' => "ga:" + profileID,
'start-date' => startDate,
'end-date' => endDate,
# 'dimensions' => "ga:month",
'metrics' => "ga:visitors",
# 'sort' => "ga:month"
})
# Update the dashboard
send_event('visitor_count', { current: visitCount.data.rows[0][0] })
end
但是,我在倒数第二行收到错误 Undefined method '[]' for nil:NilClass。谁能阐明这里发生了什么?
编辑: 我现在知道 visitCount.data 是一个 NIL 对象数组。我可以执行任何诊断以确保 API 连接正确吗?任何人都可以提出发生这种情况的可能原因吗?
【问题讨论】:
-
visitCount.data.rows或visitCount.data.rows[0]正在返回nil。第一步是弄清楚是哪一个以及为什么。 -
看起来 visitCount.data.rows 是一个 Array 对象, visitCount.data.rows[0] 是一个 NilClass 对象
标签: ruby google-analytics dashing