MyMiddleware with PG::ConnectionBad rescue

my_middleware.rb

class MyMiddleware
  def initialize(app)
    @app = app
  end

  def call(env)
    dup._call(env)
  end

  def _call(env)
    Rails.logger.send(:error, "External error ")
    begin
      @app.call(env)
    rescue PG::ConnectionBad => e
      Rails.logger.send(:error, "Internal error #{e} ")
      perform_action(env)
    end
  end

  private

  def perform_action(env)
    return ConfigsController.action(:new).call(env) unless action_create(env)
    ConfigsController.action(:create).call(env)
  end

  def action_create(env)
    env['REQUEST_METHOD'] == "POST" && env['PATH_INFO'] == "/admin/config"
  end
end