https://ruby-china.org/zorrodjn en-us <p>照着《应用 Rails 进行敏捷开发》做一个购物车系统，处理异常的 action 不能如期工作。</p> <p>app/controllers/carts_controller.rb路径下修改show方法如下：</p> <p># GET /carts/1 # GET /carts/1.json def show begin <a href="/cart" class="user-mention" title="@cart"><i>@</i>cart</a> = Cart.find(params[:id]) rescue ActiveRecord::RecordNotFound logger.error "Attempted to access invalid cart #{params[:id]}" redirect_to store_url, :notice =&gt; 'Invalid cart' else respond_to do |format| format.html # show.html.erb format.xml { render :xml =&gt; <a href="/cart" class="user-mention" title="@cart"><i>@</i>cart</a>} end end end</p> <p>之后在浏览器输入：<a href="http://localhost:3000/carts/asdfasdfadt" rel="nofollow" target="_blank">http://localhost:3000/carts/asdfasdfadt</a>提示错误 ActiveRecord::RecordNotFound in CartsController#show Couldn't find Cart with id=asdfasdfad</p> <p>恳请大神指教，先谢过了！</p> zorrodjn Wed, 19 Mar 2014 20:05:57 +0800 https://ruby-china.org/topics/18018 https://ruby-china.org/topics/18018