Extract an explicit type caster class

1 files changed, 19 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/type_caster/map.rb b/activerecord/lib/active_record/type_caster/map.rb
new file mode 100644
index 0000000000..03c9e8ff83
--- /dev/null
+++ b/activerecord/lib/active_record/type_caster/map.rb
@@ -0,0 +1,19 @@
+module ActiveRecord
+  module TypeCaster
+    class Map
+      def initialize(types)
+        @types = types
+      end
+
+      def type_cast_for_database(attr_name, value)
+        return value if value.is_a?(Arel::Nodes::BindParam)
+        type = types.type_for_attribute(attr_name.to_s)
+        type.type_cast_for_database(value)
+      end
+
+      protected
+
+      attr_reader :types
+    end
+  end
+end