1 files changed, 31 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/type/json.rb b/activerecord/lib/active_record/type/json.rb
new file mode 100644
index 0000000000..1728bd3a8e
--- /dev/null
+++ b/activerecord/lib/active_record/type/json.rb
@@ -0,0 +1,31 @@
+module ActiveRecord
+  module Type
+    class Json < Type::Value # :nodoc:
+      include Type::Helpers::Mutable
+
+      def type
+        :json
+      end
+
+      def deserialize(value)
+        if value.is_a?(::String)
+          ::ActiveSupport::JSON.decode(value) rescue nil
+        else
+          value
+        end
+      end
+
+      def serialize(value)
+        if value.is_a?(::Array) || value.is_a?(::Hash)
+          ::ActiveSupport::JSON.encode(value)
+        else
+          value
+        end
+      end
+
+      def accessor
+        ActiveRecord::Store::StringKeyedHashAccessor
+      end
+    end
+  end
+end