Unable to serialize as ActiveSupport::HashWithIndifferentAccess anymore

Question

For reasons that I\'m so far completely unable to decipher, I\'m no longer able to use ActiveSupport::HashWithIndifferentAccess anymore.

The relevant part of model l

Answer 1

If you can, switch over to syck.

In application.rb:

require 'yaml'
YAML::ENGINE.yamler = 'syck'