From 11ea85221116c92854f6bd0f23cc53cc0ffa949e Mon Sep 17 00:00:00 2001
From: Matt-Yorkley <9029026+Matt-Yorkley@users.noreply.github.com>
Date: Fri, 6 Sep 2019 17:20:41 +0100
Subject: [PATCH] Add migration to reset negative stock levels to zero

---
 db/migrate/20190906151259_reset_negative_stock_levels.rb | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 db/migrate/20190906151259_reset_negative_stock_levels.rb

diff --git a/db/migrate/20190906151259_reset_negative_stock_levels.rb b/db/migrate/20190906151259_reset_negative_stock_levels.rb
new file mode 100644
index 0000000000..ec0be5a4be
--- /dev/null
+++ b/db/migrate/20190906151259_reset_negative_stock_levels.rb
@@ -0,0 +1,6 @@
+class ResetNegativeStockLevels < ActiveRecord::Migration
+  def up
+    # Reset stock to zero for all on_demand variants that have negative stock
+    execute "UPDATE spree_stock_items SET count_on_hand = '0' WHERE count_on_hand < 0 AND backorderable IS TRUE"
+  end
+end