FIX: Update auth framework

RIGS/urls.py

@@ -1,3 +1,4 @@
+from django.urls import path
 from django.conf.urls import url
 from django.contrib.auth.views import PasswordResetView
 
@@ -16,8 +17,7 @@ urlpatterns = [
     url('^$', login_required(views.Index.as_view()), name='index'),
     url(r'^closemodal/$', views.CloseModal.as_view(), name='closemodal'),
 
-    url('^user/login/$', views.login, name='login'),
-    url('^user/login/embed/$', xframe_options_exempt(views.login_embed), name='login_embed'),
+    path('user/login/embed/', xframe_options_exempt(views.LoginEmbed.as_view()), name='login_embed'),
 
     url(r'^user/password_reset/$', PasswordResetView.as_view()),
 

RIGS/versioning.py

@@ -184,8 +184,7 @@ class RIGSVersion(Version):
         versions = RIGSVersion.objects.get_for_object_reference(self.content_type.model_class(), thisId).select_related("revision", "revision__user").all()
 
         try:
-            previousVersion = versions.filter(revision_id__lt=self.revision_id).latest(
-                field_name='revision__date_created')
+            previousVersion = versions.filter(revision_id__lt=self.revision_id).latest('revision__date_created')
         except ObjectDoesNotExist:
             return False
 

RIGS/views.py

@@ -3,6 +3,7 @@ from django.http.response import HttpResponseRedirect
 from django.http import HttpResponse
 from django.urls import reverse_lazy, reverse, NoReverseMatch
 from django.views import generic
+from django.contrib.auth.views import LoginView
 from django.db.models import Q
 from django.shortcuts import get_object_or_404
 from django.core import serializers
@@ -34,28 +35,15 @@ class Index(generic.TemplateView):
         return context
 
 
-def login(request, **kwargs):
-    if request.user.is_authenticated:
-        next = request.GET.get('next', '/')
-        return HttpResponseRedirect(next)
-    else:
-        from django.contrib.auth.views import login
-
-        return login(request)
-
-
 # This view should be exempt from requiring CSRF token.
 # Then we can check for it and show a nice error
 # Don't worry, django.contrib.auth.views.login will
 # check for it before logging  the user in
-@csrf_exempt
-def login_embed(request, **kwargs):
-    if request.user.is_authenticated:
-        next = request.GET.get('next', '/')
-        return HttpResponseRedirect(next)
-    else:
-        from django.contrib.auth.views import login
+class LoginEmbed(LoginView):
+    template_name = 'registration/login_embed.html'
 
+    @csrf_exempt
+    def dispatch(self, request, *args, **kwargs):
         if request.method == "POST":
             csrf_cookie = request.COOKIES.get('csrftoken', None)
 
@@ -63,7 +51,7 @@ def login_embed(request, **kwargs):
                 messages.warning(request, 'Cookies do not seem to be enabled. Try logging in using a new tab.')
                 request.method = 'GET'  # Render the page without trying to login
 
-        return login(request, template_name="registration/login_embed.html", authentication_form=forms.EmbeddedAuthenticationForm)
+        return super().dispatch(request, *args, **kwargs)
 
 
 """