Django：確定哪個用戶在使用post_delete信號時正在刪除

Question

我希望管理員在某些對象被刪除時得到通知，但我也想確定哪個用戶正在執行刪除操作。

可能嗎？

這是代碼：

# models.py 
# signal to notify admins when nodes are deleted 
from django.db.models.signals import post_delete 
from settings import DEBUG 

def notify_on_delete(sender, instance, using, **kwargs): 
    ''' Notify admins when nodes are deleted. Only for production use ''' 
    if DEBUG: 
     #return False 
     pass 
    # prepare context 
    context = { 
     'node': instance, 
     'site': SITE 
    } 
    # notify admins that want to receive notifications 
    notify_admins(instance, 'email_notifications/node-deleted-admin_subject.txt', 'email_notifications/node-deleted-admin_body.txt', context, skip=False) 

post_delete.connect(notify_on_delete, sender=Node) 

Answer 1

我懷疑它可能使用內置的信號（沒有User隱含綁在delete操作，因爲Django的loose coupling的數據庫層不處理與HttpRequest對象）。我會創造我自己的信號，它提供了一個user參數，並在任何視圖刪除操作發生的，喜歡的東西把它：

# myapp/signals.py 
from django.dispatch import Signal 
my_post_delete = Signal(providing_args=['instance', 'user']) 

# myapp/models.py 
from myapp.signals import my_post_delete 
... 
my_post_delete.connect(notify_on_delete, sender=Node) 

# myapp/views.py 
from myapp.signals import my_post_delete 
... 
@login_required 
def my_delete_view(request, ...) 
    ... 
    instance = Node.objects.get(...) 
    instance.delete() 
    my_post_delete.send(sender=Node, instance=instance, user=request.user)