From 89c734289289d1bdc766e207ca3695008b7aace1 Mon Sep 17 00:00:00 2001
From: Andy Brett <andy@andybrett.com>
Date: Wed, 3 Mar 2021 08:12:19 -0800
Subject: [PATCH] memoize UnitPrices object

---
 app/serializers/api/variant_serializer.rb | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/app/serializers/api/variant_serializer.rb b/app/serializers/api/variant_serializer.rb
index b701d709f0..60ae1f441d 100644
--- a/app/serializers/api/variant_serializer.rb
+++ b/app/serializers/api/variant_serializer.rb
@@ -41,10 +41,16 @@ class Api::VariantSerializer < ActiveModel::Serializer
   end
 
   def unit_price_price
-    price_with_fees / VariantUnits::UnitPrices.new(object).unit_price_denominator
+    price_with_fees / unit_prices.denominator
   end
 
   def unit_price_unit
-    VariantUnits::UnitPrices.new(object).unit_price_unit
+    unit_prices.unit
+  end
+
+  private
+
+  def unit_prices
+    @unit_prices ||= VariantUnits::UnitPrices.new(object)
   end
 end