From d2a11678ef18c992739276daf139a2c5f0266341 Mon Sep 17 00:00:00 2001
From: Benjamin Fleischer <github@benjaminfleischer.com>
Date: Tue, 24 Nov 2015 14:07:48 -0600
Subject: [PATCH] ActiveModel::AttributeAssignment requires
 Model#respond_to_missing?

---
 test/fixtures/poro.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/fixtures/poro.rb b/test/fixtures/poro.rb
index 28ee08d5..573b3fa8 100644
--- a/test/fixtures/poro.rb
+++ b/test/fixtures/poro.rb
@@ -16,6 +16,12 @@ class Model < ActiveModelSerializers::Model
     end
   end
 
+  # required for ActiveModel::AttributeAssignment#_assign_attribute
+  # in Rails 5
+  def respond_to_missing?(method_name, _include_private = false)
+    attributes.key?(method_name.to_s.tr('=', '').to_sym) || super
+  end
+
   def cache_key_with_digest
     "#{cache_key}/#{FILE_DIGEST}"
   end