now, edit view properly gets existing data and properly updates accordingly

widget_aguandhischipmunks/assignments/urls.py

@@ -4,6 +4,7 @@ from . import views
 # url for assignments
 urlpatterns = [
     path('', views.assignments_view, name='assignment'),
+    path('add', views.AssignmentAddListView.as_view(), name="assignment_add" ),
     path('<int:pk>/details', views.AssignmentDetailView.as_view(), name='assignment_details'),
-     path('add', views.AssignmentAddListView.as_view(), name="assignment_add" ),
+    path('<int:pk>/edit', views.AssignmentEditView.as_view(), name='assignment_edit'),
 ]
\ No newline at end of file

widget_aguandhischipmunks/assignments/views.py

@@ -29,11 +29,11 @@ class AssignmentAddListView(CreateView):
             # pass the pk and redirect. 
             return redirect('assignment_details', pk = new_assignment.pk)
         else:
-            return render(request, 'book_details.html', {'form': form})
+            return render(request, 'assignment_details.html', {'form': form})
         
 # assignment for edditing CBV implementation. 
-class BookEditView(UpdateView):
-    model = Assignment()
+class AssignmentEditView(UpdateView):
+    model = Assignment
     form_class = AddAssignmentForm
     template_name = 'assignment-edit.html'
 
@@ -45,4 +45,4 @@ class BookEditView(UpdateView):
             # pass the pk and redirect. 
             return redirect('assignment_details', pk = update_assignment.pk)
         else:
-            return render(request, 'book_details.html', {'form': form})
+            return render(request, 'assignment_details.html', {'form': form})
\ No newline at end of file