Log response body to production_json.log when a controller responds with a 422 status

We have a number of import errors occurring with 422 errors, and
it's hard to determine why they are happening. This change will
surface the errors in the log lines.

Relates to #47365

1 files changed, 4 insertions, 0 deletions

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index bc60a0a02e8..041837c5410 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -91,6 +91,10 @@ class ApplicationController < ActionController::Base
       payload[:user_id] = logged_user.try(:id)
       payload[:username] = logged_user.try(:username)
     end
+
+    if response.status == 422 && response.body.present? && response.content_type == 'application/json'.freeze
+      payload[:response] = response.body
+    end
   end
 
   # Controllers such as GitHttpController may use alternative methods