Django 1.1的新功能
Counter.objects.get_or_create(name = name)
Counter.objects.filter(name = name).update(count = F('count')+1)
或使用F表达式：
counter, _ = Counter.objects.get_or_create(name = name)
counter.count = F('count') +1
counter.save( update_fields=["count"] )
请记住指定要更新的字段，否则您可能在模型的其他可能字段上遇到竞争条件！
602392714
清零编程群