From 37cfe65688b936dc54cc75fca16cd66536ddb7bb Mon Sep 17 00:00:00 2001
From: Andy Brett <andy@andybrett.com>
Date: Sat, 12 Sep 2020 12:32:06 -0700
Subject: [PATCH] migrate existing weight calculators

---
 db/migrate/20200912190210_update_weight_calculators.rb | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 db/migrate/20200912190210_update_weight_calculators.rb

diff --git a/db/migrate/20200912190210_update_weight_calculators.rb b/db/migrate/20200912190210_update_weight_calculators.rb
new file mode 100644
index 0000000000..4ee5a0dfc0
--- /dev/null
+++ b/db/migrate/20200912190210_update_weight_calculators.rb
@@ -0,0 +1,10 @@
+class UpdateWeightCalculators < ActiveRecord::Migration
+  def change
+    Calculator::Weight.each { |calculator|
+      calculator.preferred_unit_from_list = 'kg'
+      calculator.preferred_per_unit = calculator.preferred_per_kg
+      calculator.preferences.delete(:preferred_per_kg)
+      calculator.save
+    }
+  end
+end