logging.rb

  before_action do
    begin
      trace = ApplicationController.class_variable_get(:@@trace_reference)
    rescue NameError
      trace = TracePoint.new(:call) do |tp|
        source_path = tp.path

        if source_path.include?('/app/controllers/') || source_path.include?('/app/models/')
          begin
            puts [
              ' ' * caller.length,
              tp.defined_class.to_s,
              '::',
              tp.method_id,
              ' [',
              tp.path,
              ':',
              tp.lineno,
              ']'
            ].join
          rescue
            require 'pry'
            binding.pry
          end
        end
      end

      ApplicationController.class_variable_set(:@@trace_reference, trace)
    end

    trace.enable
  end

  after_action do
    ApplicationController.class_variable_get(:@@trace_reference).disable
  end