dnscms: better organizer chooser, fixes slugs for organizers, better slugs

dnscms/events/views.py

@@ -1,6 +1,24 @@
 from django.utils.translation import gettext_lazy as _
+from wagtail.admin.forms import WagtailAdminModelForm
 from wagtail.admin.viewsets.chooser import ChooserViewSet
 
+from dnscms.utils import slugify
+from events.models import EventOrganizer
+
+
+class EventOrganizerCreationForm(WagtailAdminModelForm):
+    class Meta:
+        model = EventOrganizer
+        fields = ["name", "association", "external_url"]
+
+    def save(self, commit=True):
+        instance = super().save(commit=False)
+        if not instance.slug:
+            instance.slug = slugify(instance.name)
+        if commit:
+            instance.save()
+        return instance
+
 
 class EventOrganizerChooserViewSet(ChooserViewSet):
     model = "events.EventOrganizer"
@@ -10,7 +28,7 @@ class EventOrganizerChooserViewSet(ChooserViewSet):
     choose_one_text = _("Choose an organizer")
     choose_another_text = _("Choose another organizer")
     edit_item_text = _("Edit this organizer")
-    form_fields = ["name", "association", "external_url"]
+    creation_form_class = EventOrganizerCreationForm
 
 
 event_organizer_chooser_viewset = EventOrganizerChooserViewSet("event_organizer_chooser")