Add location_json field for location coordinate

Author: susilnem

local_units/models.py

@@ -360,6 +360,15 @@ def __str__(self):
         branch_name = self.local_branch_name or self.english_branch_name
         return f"{branch_name} ({self.country.name})"
 
+    def location_json(self):
+        """
+        Returns location in JSON format
+        """
+        return {
+            "lat": self.location.y,
+            "lng": self.location.x,
+        }
+
 
 class LocalUnitChangeRequest(models.Model):
 

local_units/views.py

@@ -94,11 +94,11 @@ def update(self, request, *args, **kwargs):
         # Creating a new change request for the local unit
         LocalUnitChangeRequest.objects.create(
             local_unit=local_unit,
-            previous_data=serializer,
+            previous_data=serializer.data,
             status=LocalUnitChangeRequest.Status.PENDING,
             triggered_by=request.user,
         )
-        return response.Response(serializer)
+        return response.Response(serializer.data)
 
     @extend_schema(request=None, responses=PrivateLocalUnitSerializer)
     @action(