From 3c8a798ed5e702e405ab3147a39d8862c18a1e9b Mon Sep 17 00:00:00 2001
From: Joel Lubrano <joel.lubrano@stitchfix.com>
Date: Tue, 10 Sep 2019 16:57:04 -0400
Subject: [PATCH] Add comment explaining the cautious use of
 Rails.application.class.module_parent

---
 lib/stitches/api_key.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/stitches/api_key.rb b/lib/stitches/api_key.rb
index 04b2af8..9081c8a 100644
--- a/lib/stitches/api_key.rb
+++ b/lib/stitches/api_key.rb
@@ -57,6 +57,11 @@ def do_call(env)
 
   private
 
+    # TODO: (jdlubrano)
+    # Once Rails 5 support is no longer necessary, we can simply call
+    # Rails.application.class.module_parent.  The module_parent method
+    # does not exist in Rails <= 5, though, so we need to gracefully fallback
+    # Rails.application.class.parent for Rails versions predating Rails 6.0.0.
     def rails_app_module
       application_class = Rails.application.class
       parent = application_class.try(:module_parent) || application_class.parent