I am just using the admin site in Django. I have 2 Django signals (pre_save and post_save). I would like to have the username of the current user. How would I do that? It does not seem I can send a request Or I did not understand it.
Thanks
Being reluctant to mess around with thread-local state, I decided to try a different approach. As far as I can tell, the post_save
and pre_save
signal handlers are called synchronously in the thread that calls save()
. If we are in the normal request handling loop, then we can just walk up the stack to find the request object as a local variable somewhere. e.g.
from django.db.models.signals import pre_save
from django.dispatch import receiver
@receiver(pre_save)
def my_callback(sender, **kwargs):
import inspect
for frame_record in inspect.stack():
if frame_record[3]=='get_response':
request = frame_record[0].f_locals['request']
break
else:
request = None
...
If there's a current request, you can grab the user
attribute from it.
Note: like it says in the inspect
module docs,
This function relies on Python stack frame support in the interpreter, which isn’t guaranteed to exist in all implementations of Python.