Check perms on site model form

bookwyrm/models/site.py

@@ -3,6 +3,7 @@ import datetime
 from urllib.parse import urljoin
 import uuid
 
+from django.core.exceptions import PermissionDenied
 from django.db import models, IntegrityError
 from django.dispatch import receiver
 from django.utils import timezone
@@ -114,6 +115,13 @@ class SiteSettings(models.Model):
             self.invite_question_text = "What is your favourite book?"
         super().save(*args, **kwargs)
 
+    # pylint: disable=no-self-use
+    def raise_not_editable(self, viewer):
+        """Check if the user has the right permissions"""
+        if viewer.has_perm("bookwyrm.edit_instance_settings"):
+            return
+        raise PermissionDenied()
+
 
 class Theme(models.Model):
     """Theme files"""

bookwyrm/views/admin/site.py

@@ -29,7 +29,7 @@ class Site(View):
         if not form.is_valid():
             data = {"site_form": form}
             return TemplateResponse(request, "settings/site.html", data)
-        site = form.save()
+        site = form.save(request)
 
         data = {"site_form": forms.SiteForm(instance=site), "success": True}
         return TemplateResponse(request, "settings/site.html", data)