From de364bba3c091e2f347b4688d62a3abd2d71a049 Mon Sep 17 00:00:00 2001
From: Chris Hill-Scott <me@quis.cc>
Date: Fri, 6 Aug 2021 10:11:24 +0100
Subject: [PATCH] Make `overlapping_areas` a cached property
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It’s quite expensive to calculate and there’s no guarantee we’ll only use it once.
---
 app/broadcast_areas/models.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/broadcast_areas/models.py b/app/broadcast_areas/models.py
index 4cd7f6d3b..b33ee1ee4 100644
--- a/app/broadcast_areas/models.py
+++ b/app/broadcast_areas/models.py
@@ -164,7 +164,7 @@ class CustomBroadcastArea(BaseBroadcastArea):
 
     simple_polygons = polygons
 
-    @property
+    @cached_property
     def overlapping_areas(self):
         if not self.polygons:
             return []