fix event slug being empty

ephios/core/models/events.py

@@ -119,7 +119,7 @@ def __str__(self):
         return str(self.title)
 
     def get_canonical_slug(self):
-        return slugify(self.title)
+        return slugify(self.title) or str(self.id)
 
     def get_absolute_url(self):
         from django.urls import reverse

tests/core/test_event_detail.py

@@ -9,3 +9,15 @@ def test_slug_redirect(django_app, volunteer, event):
     assert response.location  # is a redirect
     response = response.follow()
     assert event.title in response
+
+
+def test_event_slug_with_empty_name(django_app, volunteer, event):
+    event.title = ""
+    event.save()
+    response = django_app.get(
+        reverse("core:event_detail", kwargs=dict(pk=event.pk, slug="nottheactualslug")),
+        user=volunteer,
+    )
+    assert response.location  # is a redirect
+    response = response.follow()
+    assert event.description in response