feat(user): Add a type guard to extract the user from a request

src/dgsi/models.py

@@ -5,6 +5,7 @@ from typing import Optional, Self
 from asgiref.sync import async_to_sync
 from django.contrib.auth.models import AbstractUser
 from django.db import models
+from django.http import HttpRequest
 from django.utils.translation import gettext_lazy as _
 from kanidm.exceptions import NoMatchingEntries
 from kanidm.models.person import Person
@@ -87,6 +88,14 @@ class User(AbstractUser):
     )
     # accepted_terms = models.ManyToManyField(TermsAndConditions)
 
+    @classmethod
+    def from_request(cls, request: HttpRequest) -> Self:
+        u = request.user
+
+        assert isinstance(u, cls)
+
+        return u
+
     @cached_property
     @async_to_sync
     async def kanidm(self) -> Optional[KanidmProfile]:

src/dgsi/views.py

@@ -61,8 +61,7 @@ class ProfileView(LoginRequiredMixin, TemplateView):
     template_name = "dgsi/profile.html"
 
     def get_context_data(self, **kwargs):
-        u = self.request.user
-        assert isinstance(u, User)
+        u = User.from_request(self.request)
 
         return super().get_context_data(
             displayname=f"{u.first_name} {u.last_name}",