From b5443053fdb3418cc4d3fd9eee92c4b342d545cb Mon Sep 17 00:00:00 2001
From: Irka <ipeshinskaya@gmail.com>
Date: Sat, 2 Aug 2014 10:06:39 +0200
Subject: [PATCH] MT#8433 Don't clear contract_balances on invoice deletion.

As far as I remember it is rudiment of old invoicing schema,
when balance supposed to be changed on invoice issue. Web interfaces
allows to remove invoices, it led to removed balance => fixed.
---
 lib/NGCP/Schema/Result/contract_balances.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/NGCP/Schema/Result/contract_balances.pm b/lib/NGCP/Schema/Result/contract_balances.pm
index a8d42fa7..a79887ab 100644
--- a/lib/NGCP/Schema/Result/contract_balances.pm
+++ b/lib/NGCP/Schema/Result/contract_balances.pm
@@ -75,7 +75,7 @@ __PACKAGE__->belongs_to(
   {
     is_deferrable => 1,
     join_type     => "LEFT",
-    on_delete     => "CASCADE",
+    on_delete     => "SET NULL",
     on_update     => "CASCADE",
   },
 );