Fixed Values are not retained in forms (event, job and shift) #742

Modified post view of forms to retain the values of submitted form
when there is an error in form validation to increase users experience.

Fixes #742

vms/event/views.py

@@ -217,13 +217,40 @@ def post(self, request, *args, **kwargs):
                     return HttpResponseRedirect(reverse('event:list'))
             else:
                 data = request.POST.copy()
+                try:
+                    country_name = data.get('country', '')
+                    country = Country.objects.get(name=country_name)
+                except ObjectDoesNotExist:
+                    country = None
+                try:
+                    state_name = data.get('state', '')
+                    state = Region.objects.get(name=state_name)
+                except ObjectDoesNotExist:
+                    state = None
+                try:
+                    city_name = data.get('city', '')
+                    city = City.objects.get(name=city_name)
+                except ObjectDoesNotExist:
+                    city = None
+                for field in data.keys():
+                    data[field] = data.get(field, '')
+                try:
+                    data['start_date'] = form.cleaned_data['start_date']
+                except KeyError:
+                    data['start_date'] = ''
                 try:
                     data['end_date'] = form.cleaned_data['end_date']
                 except KeyError:
                     data['end_date'] = ''
+                state_list = Region.objects.filter(country=country)
+                city_list = City.objects.filter(region=state)
                 form = EventForm(data)
                 return render(request, 'event/edit.html', {
                     'form': form,
+                    'country_list': Country.objects.all(),
+                    'state_list': state_list,
+                    'city_list': city_list,
+                    'event': event
                 })