def create
      @subscriber = Subscriber.new(subscriber_params)

      if @subscriber.save
        redirect_to subscribers_url, notice: 'Successed to create.'
      else
        redirect_to subscribers_url, alert: 'Failed to create.'
      end
    end
def create
      @subscriber = Subscriber.new(subscriber_params)

      if @subscriber.save
        redirect_to subscribers_url, notice: 'Successed to create.'
      else
        redirect_to subscribers_url, alert: 'Failed to create.'
      end
    end
POST /subscribers