问题是你不想让用户重定向，相反，他们只是停留在索引页面，你只是 AJAX 发送表单提交，然后将新记录附加到现有文档中。
因此，让我们开始将表单重构为可重用的部分表单：

# deals/_form.html.haml
= simple_form_for(deal) do |f|
  %div
    = f.input :name
  %div
    = f.submit

然后让我们将表单放到索引视图中：

# deals/index.html.haml
%h1 Deals
= turbo_frame_tag "deal_form" do
  = render "form", deal: @deal

= turbo_frame_tag "deals" do
  = render @deals

我们还需要一个无效的形式提交涡轮流视图：

# deals/new.turbo_stream.haml
= turbo_stream.replace "deal_form" do
  = render partial: "deals/form", locals: { deal: @deal }

这里我们只是使用渐进式增强方法，表单和交易都呈现在初始页面视图中。使用turbo帧而不仅仅是div#deals在这种情况下实际上并没有做那么多，但如果你添加src属性来分解页面，它会在以后发挥作用。
然后，让我们设置控制器来将新交易流传输到列表中，或者在出现错误时“发送表单”。

class DealsController < ApplicationController

  # GET /deals or /deals.json
  def index
    @deals = Deal.all
  end

  # POST /deals or /deals.json
  def create
    @deal = Deal.new(deal_params)
    respond_to do |format|
      if @deal.save
        format.html { redirect_to action: :index, notice: "Deal was successfully created." }
        format.turbo_stream
      else
        format.html do 
          @deals = Deal.all
          render :index, status: :unprocessable_entity
        end
        format.turbo_stream { render :new, status: :unprocessable_entity }
      end
    end
  end

  private
    # Only allow a list of trusted parameters through.
    def deal_params
      params.require(:deal).permit(:name)
    end
end

Turbo还提供了直接为控制器渲染Turbo流的方法，如果您的操作足够简单，不需要视图：

def create
    @deal = Deal.new(deal_params)

    respond_to do |format|
      if @deal.save
        format.html { redirect_to action: :index, notice: "Deal was successfully created." }
        format.turbo_stream do
          render turbo_stream: turbo_stream.before(:deals, partial: "deals/deal", locals: { deal: @deal })
        end 
      else
        format.html { render :new, status: :unprocessable_entity }
        format.turbo_stream do
          render turbo_stream: turbo_stream.replace(:deal_form, partial: "deals/form", locals: { deal: @deal })
        end 
      end
    end
  end