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process_action(*args)

Override AbstractController::Base’s process_action to run the process_action callbacks around the normal behavior.

Source: show | on GitHub 

    # File actionpack/lib/abstract_controller/callbacks.rb, line 16
16:     def process_action(*args)
17:       run_callbacks(:process_action, action_name) do
18:         super
19:       end
20:     end