嵌套控制器资源，如何更新和销毁？

Question

按照教程帮助我在控制器中创建实例。换句话说，事务是在信封控制器上创建的。就像博客文章中的 cmets。

一切正常，但我现在不知道如何编辑交易或销毁交易。我所需要的只是找到如何编辑现有的东西。让我向您展示我目前所拥有的：

在views/envelopes/edit中（表单代码是从您可以创建新交易的地方复制的）

 <% @envelope.transactions.each do |transaction|%>
   <%= form_for [@envelope, @envelope.transactions.build] do |f| %> <!--??? NEED EDIT INSTEAD OF BUILD ???-->
     <%= f.text_field :name, "value" => transaction.name %>
     <%= f.text_field :cash, "value" => transaction.cash %>
     <%= f.submit "Submit" %> 
   <% end %>
   <%= link_to "Remove", root_path %>  <!--??? WANT TO REMOVE TRANSACTION ???-->
 <% end %>

在 routes.rb 中

  resources :envelopes do 
    resources :transactions
  end

在事务控制器中

class TransactionsController < ApplicationController
  def create
    @envelope = Envelope.find(params[:envelope_id])
    @transaction = @envelope.transactions.build(transaction_params)#(params[:transaction])
    @transaction.save

    @envelope.update_attributes :cash => @envelope.cash - @transaction.cash

    redirect_to edit_envelope_path(@envelope)
  end

  def destroy
    # ???
  end

  def update
    # ???
  end

  def transaction_params
    params.require(:transaction).permit(:cash, :name, :envelope_id)
  end
end

Answer 1

  def update
    @transaction = @envelope.transactions.find(params[:id])
    if @transaction.update(transaction_params)
      redirect to @envelope, notice: 'Transaction was successfully updated'
    else
      redirect_to @envelope, notice: 'Transaction was not updated'
    end
  end

  def destroy
    @transaction.destroy
    redirect_to @envelope, notice: 'Text here'
  end