Resolve "Show invitation code when existing person without email is invited, otherwise show that email was send"

Closes #651 (closed)

aleksis/core/views.py

@@ -1458,7 +1458,21 @@ class InvitePersonByID(PermissionRequiredMixin, SingleObjectMixin, View):
             invite.save()
 
             invite.send_invitation(self.request)
-            messages.success(self.request, _("Person was invited successfully."))
+
+            if person.email:
+                messages.success(
+                    self.request,
+                    _(
+                        "Person was invited successfully and an email "
+                        "with further instructions has been send to them."
+                    ),
+                )
+            else:
+                readable_key = "-".join(wrap(key, packet_size))
+                messages.success(
+                    self.request,
+                    f"{_('Person was invited successfully. Their key is')} {readable_key}.",
+                )
         else:
             messages.success(self.request, _("Person was already invited."))