Added signal for traveller updates

Added contact emails to family inline

busManager/traveller/signals.py

@@ -0,0 +1,23 @@
+from django.db.models.signals import post_save, post_delete
+from django.dispatch import receiver
+
+from traveller.models import TravellerRoute, Family
+
+
+@receiver(post_save, sender=TravellerRoute)
+@receiver(post_delete, sender=TravellerRoute)
+def update_traveller_dates(sender, instance, **kwargs):
+    traveller = instance.traveller
+    traveller.recalculate_travel_dates()
+    traveller.save(update_fields=[
+        "travel_start_date",
+        "travel_end_date",
+        "is_active",
+    ])
+
+@receiver(post_save, sender=Family)
+@receiver(post_delete, sender=Family)
+def update_traveller_address(sender, instance, **kwargs):
+    traveller = instance.traveller
+    traveller.update_address_from_families()
+    traveller.save(update_fields=["address"])