Rails - 控制器：注意 - 添加变量？

发布于 2024-10-03 10:50:19 字数 752 浏览 3 评论 0原文

我很陌生，但有一个关于修改脚手架的基本问题：通知添加变量。例如，rails 为我创建了以下 create 方法：

 def create
    @order = Order.new(params[:order])

    respond_to do |format|
      if @order.save
        format.html { redirect_to(@order, :notice => 'Order was successfully created.') }
        format.xml  { render :xml => @order, :status => :created, :location => @order }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @order.errors, :status => :unprocessable_entity }
      end
    end
  end

我要做的就是向 :notice 添加一个变量，以便它可以具体打印创建的订单（或使用 update 方法编辑的订单）。我尝试了一些基本的东西，例如传递 <%= order.id %>，尽管我觉得这在控制器中看起来不自然？

在此脚手架的这种格式中是否可以添加动态值？或者说这违反了惯例。

我很感谢您的帮助，如果这很新鲜，我很抱歉。

原文

I'm green behind the ears, but had a basic question about modifying the scaffolding's :notice to add a variable. For example, rails created the following create method for me:

 def create
    @order = Order.new(params[:order])

    respond_to do |format|
      if @order.save
        format.html { redirect_to(@order, :notice => 'Order was successfully created.') }
        format.xml  { render :xml => @order, :status => :created, :location => @order }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @order.errors, :status => :unprocessable_entity }
      end
    end
  end

What I'm looking to do is add a variable to :notice so that it would print specifically what order was created (or edited with the update method). I tried some basic things using such as passing <%= order.id %>,though I felt this seemed unnatural within the controller?

Is adding a dynamic value possible within this format of this scaffolding? Or is it against the convention.

I appreciate the help, sorry if this is very newbish.

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叹沉浮 2024-10-10 10:50:19

Beestings 是将动态值插入到 ruby 字符串中的首选方法。因此，如果您希望在 :notice 中添加 @order.id，您可以这样做：

 def create
    @order = Order.new(params[:order])

    respond_to do |format|
      if @order.save
        format.html { redirect_to(@order, :notice => "Order id # #{@order.id} was successfully created.") }
        format.xml  { render :xml => @order, :status => :created, :location => @order }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @order.errors, :status => :unprocessable_entity }
      end
    end
  end

Beestings are the preferred way to insert dynamic values into strings in ruby. So if you wanted @order.id in your :notice, you could do this:

 def create
    @order = Order.new(params[:order])

    respond_to do |format|
      if @order.save
        format.html { redirect_to(@order, :notice => "Order id # #{@order.id} was successfully created.") }
        format.xml  { render :xml => @order, :status => :created, :location => @order }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @order.errors, :status => :unprocessable_entity }
      end
    end
  end

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