Question

我想设置cron job来删除超过两分钟的屏幕截图，并且每两分钟运行一次cron作业。

schedule.rb文件的内容

every 2.minutes do
  runner 'screenshot.delete_old', output: {error: "#{path}/log/error.log", standard: "#{path}/log/cron.log"}
end

Model Screenshot.rb文件的内容

def self.delete_old
       # @old_screenshots = Screenshot.where('Screenshot.created_at < ?', Time.now)
        #@old_screenshots.delete_all
        #@screenshot.delete_old
        #Screenshot.delete
        screenshot_ids = screenshot.find(:all, :conditions =>            ["created_at ", 2.minutes.ago])
        if screenshot_ids.size > 0
             screenshot.destroy(screenshot_ids)
             puts "#{screenshot_ids.size} screenshots have been deleted!"
        end
    end

我更新了crontab文件并运行了rails服务器，希望删除screeshots。但它没有用。有人可以帮我吗？感谢。

Answer 1

Ruby中的类应该有首字母，也许你应该尝试：

every 2.minutes do
  runner 'Screenshot.delete_old', output: {error: "#{path}/log/error.log", standard: "#{path}/log/cron.log"}
end

和你的模特：

def self.delete_old
  screenshot_ids = Screenshot.where('created_at < ?', 2.minutes.ago))
  if screenshot_ids.size > 0
    Screenshot.destroy(screenshot_ids)
    puts "#{screenshot_ids.size} screenshots have been deleted!"
  end
end

每当gem设置一个cron作业时使用

1 个答案: