Fixing Local Request

local_request.rb

module ActionDispatch
  class Request < Rack::Request
    def local?
      false
    end
  end
end

show_exceptions.rb

def render_exception(env, exception)
  log_error(exception)
  exception = original_exception(exception)

  request = Request.new(env)
  if @consider_all_requests_local || request.local?
    rescue_action_locally(request, exception)
  else
    rescue_action_in_public(exception)
  end
  rescue Exception => failsafe_error
    $stderr.puts "Error during failsafe response: #{failsafe_error}\n  #{failsafe_error.backtrace * "\n  "}"
    FAILSAFE_RESPONSE
 end