Interesting. Good catch. Kind regards, Sithu
*Sent with Shift <https://tryshift.com/?utm_source=SentWithShift&utm_campaign=Sent%20with%20Shift%20Signature&utm_medium=Email%20Signature&utm_content=General%20Email%20Group>* On Wed, Apr 17, 2019 at 9:48 PM Matthew Pava <matthew.p...@iss.com> wrote: > Okay, the model I’m using specifies an __eq__ function without a > corresponding __hash__ function. I’ve opened a pull request with the owner > of that project. > > > > *From:* django-users@googlegroups.com [mailto: > django-users@googlegroups.com] *On Behalf Of *Matthew Pava > *Sent:* Wednesday, April 17, 2019 11:18 AM > *To:* django-users@googlegroups.com > *Subject:* RE: Unhashable TypeError when deleted from model, Django 2.2 > > > > Hi Sithu, > > I would still need to a way determine when a record expires. A Boolean > wouldn’t help in that regard. > > But I think this error has something to do with Django’s delete method. > The filtering aspect works just fine. > > > > *From:* django-users@googlegroups.com [mailto: > django-users@googlegroups.com] *On Behalf Of *Sithembewena L. Dube > *Sent:* Tuesday, April 16, 2019 2:49 PM > *To:* django-users@googlegroups.com > *Subject:* Re: Unhashable TypeError when deleted from model, Django 2.2 > > > > Why not use a boolean field on the model to denote expires? Then if that > field is True, delete the object? I think that would be cheaper and > cleaner, especially with lookups. > > > > Kind regards, > Sithu > > > > *Sent with Shift > <https://tryshift.com/?utm_source=SentWithShift&utm_campaign=Sent%20with%20Shift%20Signature&utm_medium=Email%20Signature&utm_content=General%20Email%20Group>* > > > > On Tue, Apr 16, 2019 at 9:29 PM Matthew Pava <matthew.p...@iss.com> wrote: > > I have a model that has a nullable field called expires. If expires is > null, then the record never expires. > > I’m performing a delete on the model for any record that has an expires > date that has passed, and I keep getting a TypeError that Model is > unhashable. Am I doing something wrong? > > > > Model.objects.filter(expires__lt=timezone.now()).delete() > > > > Here’s the traceback: > > > > Traceback (most recent call last): > > File "\django\core\handlers\exception.py", line 34, in inner > > response = get_response(request) > > File "\django\core\handlers\base.py", line 115, in _get_response > > response = self.process_exception_by_middleware(e, request) > > File "\django\core\handlers\base.py", line 113, in _get_response > > response = wrapped_callback(request, *callback_args, **callback_kwargs) > > File "\django\views\decorators\csrf.py", line 54, in wrapped_view > > return view_func(*args, **kwargs) > > File "\django\views\generic\base.py", line 71, in view > > return self.dispatch(request, *args, **kwargs) > > File "\rest_framework\views.py", line 495, in dispatch > > response = self.handle_exception(exc) > > File "\rest_framework\views.py", line 455, in handle_exception > > self.raise_uncaught_exception(exc) > > File "\rest_framework\views.py", line 492, in dispatch > > response = handler(request, *args, **kwargs) > > File "\rest_framework\decorators.py", line 55, in handler > > return func(*args, **kwargs) > > File "C:\project\general\views.py", line 88, in all_messages_for_user > > Model.objects.filter(expires__lt=timezone.now()).delete() > > File "\django\db\models\query.py", line 710, in delete > > collector.collect(del_query) > > File "\django\db\models\deletion.py", line 192, in collect > > reverse_dependency=reverse_dependency) > > File "\django\db\models\deletion.py", line 94, in add > > if obj not in instances: > > TypeError: unhashable type: 'Model' > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to django-users+unsubscr...@googlegroups.com. > To post to this group, send email to django-users@googlegroups.com. > Visit this group at https://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/f2d2e610ffe04dff85edf80be0c7ad2d%40iss2.ISS.LOCAL > <https://groups.google.com/d/msgid/django-users/f2d2e610ffe04dff85edf80be0c7ad2d%40iss2.ISS.LOCAL?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to django-users+unsubscr...@googlegroups.com. > To post to this group, send email to django-users@googlegroups.com. > Visit this group at https://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/CAH-SnCALGpZGrjVfvkN%2Bt-6Dg6tkX7yW-DhQxyMueTw9rHtqpg%40mail.gmail.com > <https://groups.google.com/d/msgid/django-users/CAH-SnCALGpZGrjVfvkN%2Bt-6Dg6tkX7yW-DhQxyMueTw9rHtqpg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to django-users+unsubscr...@googlegroups.com. > To post to this group, send email to django-users@googlegroups.com. > Visit this group at https://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/cbdab94a9c2b481bbddb1b242009de80%40iss2.ISS.LOCAL > <https://groups.google.com/d/msgid/django-users/cbdab94a9c2b481bbddb1b242009de80%40iss2.ISS.LOCAL?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to django-users+unsubscr...@googlegroups.com. > To post to this group, send email to django-users@googlegroups.com. > Visit this group at https://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/98d2c65cc3964e0181f4cc4d40a531ba%40iss2.ISS.LOCAL > <https://groups.google.com/d/msgid/django-users/98d2c65cc3964e0181f4cc4d40a531ba%40iss2.ISS.LOCAL?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Django users" group. 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