module ActiveAdmin::ResourceController::Streaming

def stream_resource(&block)
  headers["X-Accel-Buffering"] = "no"
  headers["Cache-Control"] = "no-cache"
  headers["Last-Modified"] = Time.current.httpdate
  if ActiveAdmin.application.disable_streaming_in.include? Rails.env
    self.response_body = block[String.new]
  else
    self.response_body = Enumerator.new &block
  end
end