Upgrade to Django 2.1 using pip-tools

Closes #88

apps/map/models.py

@@ -246,7 +246,7 @@ class CaseStudy(models.Model):
     # User who submitted case study
     author = models.ForeignKey(
             User,
-            models.SET_NULL,
+            on_delete=models.SET_NULL,
             blank=True,
             null=True,
             editable=False
@@ -927,7 +927,8 @@ class CaseStudy(models.Model):
         SpatialRefSys,
         null=True,
         blank=True,
-        default=4326
+        default=4326,
+        on_delete=models.PROTECT
     )
 
     # 4.3.3

apps/map/views.py

@@ -147,6 +147,7 @@ class Drafts(LoginRequiredMixin, View):
 
     def get(self, request):
         draft = self.get_object(request)
+
         if draft == None:
             return HttpResponse(status=404) # Not Found
         else:
@@ -155,13 +156,14 @@ class Drafts(LoginRequiredMixin, View):
     def put(self, request):
         # Find an existing object is there is one
         draft = self.get_object(request)
+
         if draft == None:
             # If there isn't, create a new draft...
-            draft = CaseStudyDraft(author=request.user, data=request.body)
+            draft = CaseStudyDraft(author=request.user, data=request.body.decode())
             draft.save()
             return HttpResponse(status=201) # Created
         else:
-            draft.data = request.body
+            draft.data = request.body.decode()
             draft.save()
             return HttpResponse(status=200) # OK