From fcf5dbd75149cdcf5e2ed93350f321d5f0b61cf0 Mon Sep 17 00:00:00 2001
From: Chris Arcand <chris@chrisarcand.com>
Date: Tue, 3 Jan 2017 22:38:41 -0600
Subject: [PATCH] Add _default_attributes to acts_as_ar_model

_default_attributes is a set of default attributes for the internal API
of ActiveRecord models added in 5.0.1.
---
 lib/acts_as_ar_model.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/acts_as_ar_model.rb b/lib/acts_as_ar_model.rb
index 808a37923dd..fbe4cb4b294 100644
--- a/lib/acts_as_ar_model.rb
+++ b/lib/acts_as_ar_model.rb
@@ -53,6 +53,10 @@ def attribute_types
         @attribute_types ||= Hash.new(ActiveModel::Type::Value.new)
       end
 
+      def _default_attributes
+        @default_attributes ||= ActiveRecord::AttributeSet.new({})
+      end
+
       def attribute_names
         load_schema
         attribute_types.keys