Fix system status page in SPA

CHANGELOG.rst

@@ -13,6 +13,7 @@ Added
 ~~~~~
 
 * GraphQL schema for Rooms
+* Provide API endpoint for system status.
 * [Dev] UpdateIndicator Vue Component to display the status of interactive pages
 * [Dev] DeleteDialog Vue Component to unify item deletion in the new frontend
 
@@ -38,6 +39,7 @@ Fixed
 * When the Celery worker wasn't able to execute all tasks in time, notifications were sent multiple times.
 * Changing the maintenance mode state spawned another SPA instance in the iframe
 * Phone numbers couldn't be in regional format.
+* System status view wasn't accessible through new frontend if a check failed.
 
 `3.0b3`_ - 2023-03-19
 ---------------------

aleksis/core/urls.py

@@ -38,6 +38,7 @@ urlpatterns = [
         "oauth/authorized_tokens/", views.TemplateView.as_view(template_name="core/vue_index.html")
     ),
     path("oauth/", include("oauth2_provider.urls", namespace="oauth2_provider")),
+    path("system_status/", views.SystemStatusAPIView.as_view(), name="system_status_api"),
     path(
         "django/",
         include(

aleksis/core/views.py

@@ -493,7 +493,6 @@ class SystemStatus(PermissionRequiredMixin, MainView):
     context = {}
 
     def get(self, request, *args, **kwargs):
-        status_code = 500 if self.errors else 200
         task_results = []
 
         if app.control.inspect().registered_tasks():
@@ -505,12 +504,11 @@ class SystemStatus(PermissionRequiredMixin, MainView):
 
         context = {
             "plugins": self.plugins,
-            "status_code": status_code,
             "tasks": task_results,
             "DEBUG": settings.DEBUG,
             "form": MaintenanceModeForm(),
         }
-        return self.render_to_response(context, status=status_code)
+        return self.render_to_response(context)
 
     def post(self, request, *args, **kwargs):
         form = MaintenanceModeForm(request.POST)
@@ -532,6 +530,18 @@ class SystemStatus(PermissionRequiredMixin, MainView):
         return self.get(request, *args, **kwargs)
 
 
+class SystemStatusAPIView(PermissionRequiredMixin, MainView):
+    """Provide information about system status as JSON."""
+
+    permission_required = "core.view_system_status_rule"
+
+    @method_decorator(never_cache)
+    def get(self, request, *args, **kwargs):
+        status_code = 500 if self.errors else 200
+
+        return self.render_to_response_json(self.plugins, status_code)
+
+
 class TestPDFGenerationView(PermissionRequiredMixin, RenderPDFView):
     template_name = "core/pages/test_pdf.html"
     permission_required = "core.test_pdf_rule"