NoMethodError - undefined method `timestamp_sort_order' for Paper trail issue after upgrading Rails 4.2

Question

I used paper_trail to tracking transnational changes when I migrated rails 3.2 to rails 4.2, have got below issue:

NoMethodError - undefined method `t

Answer 1

got this on rails 6.0.0beta3 because I patched papertrail and forgot to add PaperTrail::VersionConcern, e.g.:

module PaperTrail
  class Version < ::ActiveRecord::Base
    include PaperTrail::VersionConcern
  end
end

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PaperTrail::Rails::Engine.eager_load! did not fix it for me

looking at the source code it's calling it directly on an ActiveRecord::Base model, it's defined on PaperTrail::VersionConcern.