Rake任务在Heroku上运行两次

时间:2012-10-26 04:36:50

标签: database heroku nokogiri amazon-rds rake-task

我在heroku上有一个应用程序,可以从网站上删除定价数据并定期保存。出于某种原因,每当我在本地运行rake任务时,它就会按预期运行,但是当我在heroku上运行任务时,它会增加额外的输出并且由于某种原因将对象保存两次。

我在本地运行时的输出

a,12.80 saved at 2012-10-26 03:36:17 UTC.
b,38.03 saved at 2012-10-26 03:36:24 UTC.
c,22.38 saved at 2012-10-26 03:36:31 UTC.

我在heroku上运行时的输出

a,12.80 saved at 2012-10-26 03:36:17 UTC.
b,38.03 saved at 2012-10-26 03:36:24 UTC.
c,22.38 saved at 2012-10-26 03:36:31 UTC.
#<Stock:0x000000047bb5e8>,12.80 saved at 2012-10-26 03:36:45 UTC.
#<Stock:0x000000047baaf8>,38.03 saved at 2012-10-26 03:36:48 UTC.
#<Stock:0x000000047b00a8>,22.38 saved at 2012-10-26 03:36:52 UTC.

代码

require 'open-uri'
require 'date'

namespace :data do 
  desc "import current blah stock price data to database"
  task :importblah => :environment do

  #pass in a stock and price and save it to the database
  def save_stock(stock, price)
    #store stock data in database
    p = stock.prices.build
    p.price = price
    p.datetime = Time.now.utc.to_datetime

    if p.save
      puts "#{stock.symbol},#{price} saved at #{p.datetime.to_s}."
    else
      puts "#{stock.symbol} didn't save."
    end
  end

  actives = Parent.where("test1 = ?", true)

  actives.each do |m|

    stocks = m.stocks.where('test2 = ?', false)
    stocks.each do |stock|
      if stock.title.start_with?('blah')
        #grab stock price data from blah.com
        url = "blah"+stock.symbol
        doc = Nokogiri::HTML(open(url))
        price = doc.at_css(".value").text[/\d+\.\d+/]
        save_stock(stock, price)
      end


    end
  end


  end
end

对于其他网站,我的rake任务几乎相同,并且没有将定价数据保存两次。我正在使用Amazon RDS db,如果这会影响任何事情。

1 个答案:

答案 0 :(得分:1)

原来这是git跟踪的一个问题,我在本地删除了文件,但忘记了

git rm oldraketask.rake

碰巧包含一个rake任务,其名称与我正在运行的任务相同,因此heroku连续运行两个rake任务,首先是新文件,然后是来自heroku服务器的旧文件中的一个。