From a741208f80dd33420a56486bd9ed2b0b9862234a Mon Sep 17 00:00:00 2001
From: Ryuta Kamizono <kamipo@gmail.com>
Date: Mon, 12 Nov 2018 03:39:28 +0900
Subject: Ensure casting by decimal attribute when querying

Related 34cc301f03aea2e579d6687a9ea9782afc1089a0.

`QueryAttribute#value_for_database` calls only `type.serialize`, and
`Decimal#serialize` is a no-op unlike other attribute types.

Whether or not `serialize` will invoke `cast` is undefined in our test
cases, but it actually does not work properly unless it does so for now.
---
 activemodel/lib/active_model/type/decimal.rb | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'activemodel/lib/active_model/type')

diff --git a/activemodel/lib/active_model/type/decimal.rb b/activemodel/lib/active_model/type/decimal.rb
index e8ee18c00e..b37dad1c41 100644
--- a/activemodel/lib/active_model/type/decimal.rb
+++ b/activemodel/lib/active_model/type/decimal.rb
@@ -12,6 +12,10 @@ module ActiveModel
         :decimal
       end
 
+      def serialize(value)
+        cast(value)
+      end
+
       def type_cast_for_schema(value)
         value.to_s.inspect
       end
-- 
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