How to pass created object in createview right to updateview in django - django

Question

I have a createview view in my django app:
### Create a Group
class GroupCreateView(CreateView): # {{{
model = Group
form_class = GroupForm
template_name = 'ipaswdb/group/group_form.html'
success_url = '/ipaswdb/group/'
def get_context_data(self, **kwargs):
..do stuff..
def post(self, request, *args, **kwargs):
if self.request.POST.has_key('submit'):
form = GroupForm(request.POST)
if form.is_valid():
### Save the group
self.object = form.save()
#### Adding a provider forces a default location
#if form['default_location'].value() == True:
### We are forcing the creation of a GroupLocation when a new Group is created
gl = GroupLocation(
group = Group.objects.get(pk=self.object.id),
doing_business_as = self.object.group_name,
default_group_location = True,
mailing_address_line_one = self.object.mailing_address_line_one,
mailing_address_line_two = "",
mailing_city = self.object.mailing_city,
mailing_state = self.object.mailing_state,
mailing_zip_code = self.object.mailing_zip_code,
mailing_phone = self.object.mailing_phone,
mailing_fax = self.object.mailing_fax,
contact = self.object.group_contact,
physical_address_line_one = self.object.billing_address_line_one,
physical_address_line_two = "",
physical_city = self.object.billing_city,
physical_state = self.object.billing_state,
physical_zip_code = self.object.billing_zip_code,
physical_phone = self.object.billing_phone,
physical_fax = self.object.billing_fax,
)
gl.save()
new_grploc = gl
self.object.default_location_id = new_grploc.id
self.object.save()
new_group_id = self.object.id
new_grploc_id = new_grploc.id
### Now check the list of providers to see what has changed
print "group_add_provider: ",
print request.POST.getlist('group_add_provider')
add_providers = request.POST.getlist('group_add_provider')
if add_providers:
for pro in add_providers:
add_grploc = GroupLocationProvider(
grouplocation=GroupLocation.objects.get(pk=new_grploc_id),
provider=Provider.objects.get(pk=pro)
)
add_grploc.save()
### Now check the list of insurances to see what has changed
print "group_add_insurance: ",
print request.POST.getlist('group_add_insurance')
add_insurances = request.POST.getlist('group_add_insurance')
if add_insurances:
for ins in add_insurances:
add_grpins = GroupInsurance(
group=Group.objects.get(pk=new_group_id),
insurance=Insurance.objects.get(pk=ins)
)
add_grpins.save()
#return HttpResponseRedirect(self.get_success_url()) #how it used to work, just fine but would go back to my list of groups
return HttpResponseRedirect('ipaswdb:group_detail', self.object.pk) #want it to call my edit view here.
My Url Patterns
app_name = 'ipaswdb'
urlpatterns = [
url(r'^group/(?P<pk>[0-9]+)/$', GroupUpdateView.as_view(), name='group_detail'),
url(r'^group/add/$', GroupCreateView.as_view(), name='group_add'),
..etc..
Got an error but I feel I am closer?
DisallowedRedirect at /ipaswdb/group/add/
Unsafe redirect to URL with protocol 'ipaswdb'
I really want to load the page with the created object but as an updateview
Anyway to do this from the create view?

Answer 1

It is highly recommended to return a redirect request from a successful POST request. Otherwise a user might accidentally create multiple objects by reloading the page. Something like this:
from django.shortcuts import redirect
...
return redirect('name-of-update-url', pk=obj.pk)
If you really do not want to use a redirect, it is a bit more involved. Class based views are not meant to be called directly. The as_view method you use in your urls.py creates a wrapper function which instantiates the class and calls dispatch, which selects the right handler method (get/post/...). But you can't use as_view, because you have a POST request, but probably want to call the get method.
So you have to create an instance of your UpdateView and directly call its get method. With a standard UpdateView, can try something like this:
class GroupCreateView(CreateView):
...
def post(self, request, *args, **kwargs):
...
obj = ... # create your object
update_view = UpdateView()
update_view.request = self.request
update_view.args = []
update_view.kwargs = {'pk': obj.pk}
return update_view.get(self.request)
If you heavily customized your UpdateView, you might have to adapt this.
My go-to resource how Django's class-based views look under the hood is https://ccbv.co.uk