如何修复以下错误：在 rails 3.2 中为 #<ActionDispatch：：路由：：映射器：0x3f8ee48> 定义方法"PUT"？

Question

我目前正在尝试为我的rails应用程序创建一个购物车，一旦填充我的购物车应该保存在会话中。

每次我尝试运行服务器来测试是否工作，似乎我的路由根本不工作…

见下面我的路线。Rb，我的购物车控制器和索引。

任何帮助都将不胜感激。

routes.rb

    Sewingsupplies::Application.routes.draw do
  get "cart/index"
  get "cart/success"
  PUT "/cart/:id" => "cart#add"
  DELETE "/cart/:id" => "cart#remove"
  DELETE "/cart" => "cart#clear"
  POST "/cart/checkout"
  devise_for :admins
  resources :catalogues

  devise_for :users

车控制器

      def index
        sessions[:cart] = {}
        render 'cart/index'
      end
      def success
      end

      def add
        @catalogue = Catalogue.find(params[:id])
        cart = sessions[:cart]
        cart = {:catalogue => @catalogue.name,category => @catalogue.category, :code => @catalogue.code , :colour=> @catalogue.colour, :description => @catalogue.description, :image  => @catalogue.image , :unitprice => += @catalogue.unitprice, :unitquantity => +=1, :unitweight => += @catalogue.unitweight }
        sessions[:cart] = cart
        render 'cart/add'
      end
end

和我的索引页

<h1>Listing catalogues</h1>
<table>
  <tr>
    <th>Name</th>
    <th>Code</th>
    <th>Category</th>
    <th>Description</th>
    <th>Unitprice</th>
    <th>Unitquantity</th>
    <th>Unitweight</th>
    <th>Colour</th>
    <th>Image</th>
    <th>User</th>
    <th></th>
    <th></th>
    <th></th>
    <th></th>
  </tr>
<% @catalogues.each do |catalogue| %>
  <tr>
    <td><%= catalogue.name %></td>
    <td><%= catalogue.code %></td>
    <td><%= catalogue.category %></td>
    <td><%= catalogue.description %></td>
    <td><%= catalogue.unitprice %></td>
    <td><%= catalogue.unitquantity %></td>
    <td><%= catalogue.unitweight %></td>
    <td><%= catalogue.colour %></td>
    <td><%= image_tag(catalogue.image, :width => 150) if catalogue.image.present?%></td>
    <td><%= catalogue.user.email %></td>
    <td><%= link_to 'Show', catalogue %></td>
    <td><%= link_to 'Edit', edit_catalogue_path(catalogue) %></td>
    <td><%= link_to 'Destroy', catalogue, method: :delete, data: { confirm: 'Are you sure?' } %></td>
    <td><%= link_to "Add to cart", controller: "cart", action: "add", id: @catalogue.id, method: :post %></td>
  </tr>
<% end %>
</table>
<br />
<%= link_to "View cart", controller: "cart", action: "index" %>
<%= link_to 'New Catalogue', new_catalogue_path %>

Answer 1

在你的路由中。你已经用大写的PUT和DELETE定义了路由。定义像put和delete这样的小写路由，因为它们是ActionDispatch::Routing::Mapper类的方法，用来为你的应用程序设置路由。因为ruby是区分大小写的，你需要用正确的大小写来调用这个方法。