not getting updated fields using django signals

Question

I am trying to fetch the updated fields using django signals.when i update the model using update view and call the post_save i get the update_fields as None in the kwargs. How to get the updated fields using django signals ??

signals.py

from .models import Department
from django.db.models.signals import post_save
from django.dispatch import receiver

@receiver(post_save, sender=Department)
def department_history(sender, created, **kwargs):
 update = kwargs['update_fields']

views.py

class DepartmentEditView(LoginRequiredMixin, SuccessMessageMixin,PermissionRequiredMixin, UpdateView):

model = Department
form_class = DepartmentForm
success_url = reverse_lazy('departments:departments')
success_message ="%(department_name)s was Updated Sucessfully "
template_name_suffix = '_update'
permission_required = ('departments.change_department',)

try change to `def department_history(sender, instance=Department(), created, update_fields, **kwargs):` and check `update_fields` again — Ngoc Pham, Jan 28 '19 at 06:51
try this: `def department_history(sender, instance, created, **kwargs): if created: update = kwargs['update_fields'] ` — Ahtisham, Jan 28 '19 at 07:18
during update the created is False only in create it is True refer:- https://docs.djangoproject.com/en/2.1/topics/signals/#defining-and-sending-signals — beginners, Jan 28 '19 at 07:25

score 0 · Answer 1 · answered Jan 29 '19 at 12:40

0

just update the code in views.py

def form_valid():
    obj=form.save(commit=False)
    obj.save(update_fields=['field_name'])

updated field name can be get using form.changed_data

answered Jan 29 '19 at 12:40

beginners

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not getting updated fields using django signals

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