Added cached readonly field "address" to traveler to allow search functionally and reduce database lookups

busManager/coord/models.py

@@ -182,6 +182,7 @@ class Traveller(models.Model):
     year_level = models.CharField(max_length=2, choices=YEAR)
     bus_stops = models.ManyToManyField(BusStop, through='TravellerRoute', blank=True)
     distance_to_school = models.PositiveSmallIntegerField(blank=True, null=True)
+    address = models.CharField(max_length=100, default="")
 
     travel_start_date = models.DateField(blank=True, null=True)
     travel_end_date = models.DateField(blank=True, null=True)
@@ -211,6 +212,7 @@ class Traveller(models.Model):
 
     def save(self, *args, **kwargs):
         self._update_active_status()
+        self._repopulate_address()
         super(Traveller, self).save(*args, **kwargs)
 
     def _is_active(self):
@@ -259,14 +261,15 @@ class Traveller(models.Model):
             stops = 1
         return f"${str(cost * stops)}"
 
-    def address(self):
+    def _repopulate_address(self):
         families = Family.objects.filter(traveller__id__exact=self.id)
         if families.count() == 0:
-            return ""
-        if families.count() == 1:
+            self.address = ""
+        elif families.count() == 1:
             family = families.first()
-            return f"{family.residential_address} {family.residential_suburb}"
-        return "Multiple"
+            self.address = f"{family.residential_address} {family.residential_suburb}"
+        else:
+            self.address = "Multiple"
 
     def get_parsed_numbers(self, parents=False, emergency=False):
         return []  # Moved to family model. To remove from traveller model