我目前正在创建一个rails应用程序,并希望了解如何安排在特定时间运行某些任务.
对于例如管理员希望在早上8:00向他的用户发送电子邮件,并且不想提前醒来发送该电子邮件.因此,他/她希望安排任务在那时发送电子邮件.
那么,有没有一种方法,或者更好的仍然是宝石,允许任务被安排在特定时间运行?谢谢!
解决方法
我首选的解决方案是
Whenever宝石.
有了它,你有schedule.rb文件,它指定何时应该完成某些事情,包括运行rake任务,执行方法,甚至执行任意shell命令:
示例schedule.rb文件,从Whenever自述文件中无耻地复制:
- every 3.hours do
- runner "MyModel.some_process"
- rake "my:rake:task"
- command "/usr/bin/my_great_command"
- end
- every 1.day,:at => '4:30 am' do
- runner "MyModel.task_to_run_at_four_thirty_in_the_morning"
- end
- every :hour do # Many shortcuts available: :hour,:day,:month,:year,:reboot
- runner "SomeModel.ladeeda"
- end
- every :sunday,:at => '12pm' do # Use any day of the week or :weekend,:weekday
- runner "Task.do_something_great"
- end
- every '0 0 27-31 * *' do
- command "echo 'you can use raw cron Syntax too'"
- end
- # run this task only on servers with the :app role in Capistrano
- # see Capistrano roles section below
- every :day,:at => '12:20am',:roles => [:app] do
- rake "app_server:task"
- end