计划django自定义命令 [英] Scheduling django custom command

问题描述

我无法让我的自定义命令按计划运行。我试过一个cronjob和 django-chronograph ，但我似乎不能得到它

I am having difficulty getting my custom command to run on schedule. I have tried a cronjob and django-chronograph, but I can't seem to get it to run like it can (successfully) from the command line.

我只是在Ubunutu上使用django在本地开发应用程序。

I'm just developing an app locally using django installed on Ubunutu.

我有一个自定义命令，我用来清除大于30天的日志条目。为了反复测试，我改变它，以便它只删除一个有点任意条目：

I have a custom command that I use to clear out log entries that are greater than 30 days old. In order to test it repeatedly, I altered it so that it only deletes one somewhat arbitrary entry:

from datetime import datetime, timedelta
from hitcount.models import Hit
from django.core.management.base import BaseCommand, CommandError

class Command(BaseCommand):
    args = '<days>'
    help = 'Clear out all Hits that occured over "days" days ago'

    def handle(self, *args, **options):
        list = Hit.objects.filter(created__lt = datetime.now()-timedelta(days=2) )
        list[0].delete()

        self.stdout.write('Hit deleted - %s' % list[0])

此命令（del_hit.py）位于以下结构：

This command (del_hit.py) is located in the following structure:

/project_dir
   /app
      /management
         __init__.py
         /commands
            __init__.py
            del_hit.py

我可以从我的project_dir成功运行这个命令

As I stated, I can successfully run this command from my project_dir

python manage.py del_hit

我尝试安装 django-chronograph 。它似乎非常有用。它识别我的命令，并允许我从下拉列表中选择它。我按照指示应用cron：

I tried installing django-chronograph. It seems very useful. It recognized my command and allowed me to select it from a drop down list. I applied the cron as instructed:

• 
  
  • 
    
    • ul>
      
    • 
      
      • /home/vadmin/development/python/my_proj/manage.py cron
      
      

      但是，当它试图执行命令时，它在日志中给我以下错误：

      However, when it tries to execute the command, it gives me the following error in the log:

      The job failed to run. The exception was :
      
      Unknown command: u'del_hit'
      
      Traceback (most recent call last):
      
      File "/home/vadmin/development/python/my_proj/chronograph/models.py", line 213, in handle_run
      call_command(self.command, *args, **options)
      
      File "/usr/lib/python2.6/dist-packages/django/core/management/__init__.py", line 155, in call_command
      raise CommandError("Unknown command: %r" % name)
      
      CommandError: Unknown command: u'del_hit'
      

      我试图从标准视图自己运行命令： p>
      
      

      I tried running the command myself from a standard view:

      from django.core.management import call_command
      def test_del(request):
          list = Hit.objects.filter(created__lt = datetime.now()-timedelta(days=2) )
      
          args = []
          options = {}
          call_command('del_hit', *args, **options)
      
      return render_to_response('test.html', {'del_hit_item':list[0]})
      

      成功执行。

      最后，我尝试设置一个cronjob，

      Finally, I tried to setup a cronjob to execute every hour

      30 * * * * python /home/vadmin/development/python/my_proj/manage.py del_hit
      

      这不起作用。

      一些帮助使我的自定义命令使用django-chronograph（最好）或简单的cronjob 按计划运行

      推荐答案

      尝试更新您调用的命令以首先执行cd，然后单击

      Try updating the command you call to do a 'cd' first,

      （cd / home / vadmin / development / python / my_proj&& ./manage.py del_hit）

      这篇关于计划django自定义命令的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！