admin: add ?provider for ApplicationCreateView

authentik/admin/views/applications.py

@@ -1,4 +1,6 @@
 """authentik Application administration"""
+from typing import Any
+
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib.auth.mixins import (
     PermissionRequiredMixin as DjangoPermissionRequiredMixin,
@@ -7,6 +9,7 @@ from django.contrib.messages.views import SuccessMessageMixin
 from django.utils.translation import gettext as _
 from django.views.generic import UpdateView
 from guardian.mixins import PermissionRequiredMixin
+from guardian.shortcuts import get_objects_for_user
 
 from authentik.admin.views.utils import BackSuccessUrlMixin, DeleteMessageView
 from authentik.core.forms.applications import ApplicationForm
@@ -30,6 +33,22 @@ class ApplicationCreateView(
     template_name = "generic/create.html"
     success_message = _("Successfully created Application")
 
+    def get_initial(self) -> dict[str, Any]:
+        if "provider" in self.request.GET:
+            try:
+                initial_provider_pk = int(self.request.GET["provider"])
+            except ValueError:
+                return super().get_initial()
+            providers = (
+                get_objects_for_user(self.request.user, "authentik_core.view_provider")
+                .filter(pk=initial_provider_pk)
+                .select_subclasses()
+            )
+            if not providers.exists():
+                return {}
+            return {"provider": providers.first()}
+        return super().get_initial()
+
 
 class ApplicationUpdateView(
     SuccessMessageMixin,

authentik/core/forms/applications.py

@@ -9,7 +9,7 @@ from authentik.lib.widgets import GroupedModelChoiceField
 class ApplicationForm(forms.ModelForm):
     """Application Form"""
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self, *args, **kwargs):  # pragma: no cover
         super().__init__(*args, **kwargs)
         self.fields["provider"].queryset = (
             Provider.objects.all().order_by("pk").select_subclasses()

authentik/providers/saml/api.py

@@ -64,7 +64,7 @@ class SAMLProviderViewSet(ModelViewSet):
         try:
             metadata = DescriptorDownloadView.get_metadata(request, provider)
             return Response({"metadata": metadata})
-        except Provider.application.RelatedObjectDoesNotExist:
+        except Provider.application.RelatedObjectDoesNotExist:  # pylint: disable=no-member
             return Response({"metadata": ""})
 
 

authentik/providers/saml/views/metadata.py

@@ -4,7 +4,6 @@ from django.contrib import messages
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.http import HttpRequest, HttpResponse
 from django.shortcuts import get_object_or_404
-from django.urls.base import reverse_lazy
 from django.utils.translation import gettext_lazy as _
 from django.views import View
 from django.views.generic.edit import FormView