I am getting object has no attribute update in my Django Website - django

Question

I have a crud application and would like to update the items. I have checked some solutions online which explains that the .update method can't be used like this but for only a queryset. I don't know how to update the information manually. Thanks
views.py
def UpdateReservation(request, pk):
table_exists = Reservation.objects.get(id=pk)
form = ReservationForm(instance=table_exists)
if request.method == "POST":
if request.POST['table']:
request.POST = request.POST.copy()
table_exists = Reservation.objects.get(id=pk)
try:
if table_exists:
time = form['time']
people = form['people']
comment = form['comment']
date_reserved = form['date_reserved']
email = form['email']
phone = form['phone']
first_name = form['first_name']
resrv = table_exists.update(email=email, first_name=first_name, people=people, time=time, date_reserved=date_reserved, comment=comment, table=table_exists)
resrv.save()
messages.success(request, "you have successfully edited.")
return redirect(request.path)
else:
messages.error(request, "Unable to edit.")
return redirect(request.path)
except Exception as e:
messages.error(request, "Unknown error" + str(e))
return redirect(request.path)
context = {"form":form}
return render(request, "dashboard/super/admin/update_reserve.html", context)
After trying that, it returns the error, Unknown error'Reservation' object has no attribute 'update'

Answer 1

It is better to validate the form and update the individual fields with respective values and then save the object. The view should be as follows:
from django.shortcuts import get_object_or_404
def UpdateReservation(request, pk):
table_exists = get_object_or_404(Reservation, id=pk)
form = ReservationForm(instance=table_exists)
if request.method == "POST":
form = ReservationForm(request.POST, instance=table_exists)
if form.is_valid():
time = form['time']
people = form['people']
comment = form['comment']
date_reserved = form['date_reserved']
email = form['email']
phone = form['phone']
first_name = form['first_name']
table_exists.email = email
table_exists.first_name = first_name
table_exists.people = people
table_exists.time = time
table_exists.date_reserved = date_reserved
table_exists.comment = comment
table_exists.save()
messages.success(request, "you have successfully edited.")
return redirect(request.path)
else:
messages.error(request, "Unable to edit.")
return redirect(request.path)
context = {"form": form}
return render(request, "dashboard/super/admin/update_reserve.html", context)

Answer 2

You should use model like this:
table_exists = Reservation.objects.get(id=pk)
table_exists.email = email
table_exists.first_name = first_name
table_exists.people = people
table_exists.time = time
table_exists.date_reserved = date_reserved
table_exists.comment = comment
table_exists.table = table_exists
table_exists.save()