1 files changed, 25 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/type/decimal.rb b/activerecord/lib/active_record/type/decimal.rb
new file mode 100644
index 0000000000..1c0147a797
--- /dev/null
+++ b/activerecord/lib/active_record/type/decimal.rb
@@ -0,0 +1,25 @@
+module ActiveRecord
+  module Type
+    class Decimal < Value # :nodoc:
+      include Numeric
+
+      def type
+        :decimal
+      end
+
+      def klass
+        ::BigDecimal
+      end
+
+      private
+
+      def cast_value(value)
+        if value.respond_to?(:to_d)
+          value.to_d
+        else
+          value.to_s.to_d
+        end
+      end
+    end
+  end
+end