如何推送@host变量，以便在提交表单时能够正常工作？

  def new
    signed_in_checker
    @review = Review.new
    @host = Host.find(params[:id])
  end

  def create
    @review = Review.new(review_params)
    @review.user_id = current_user[:id]
    @review.host_id = @host
    if @review.save
      redirect_to @host
    else
      render 'new'
    end
  end
  def new
    signed_in_checker
    @review = R