Question

我收到此行的NoMethodError＆lt;％= link_to“删除”，delete_product_path（p），：confirm =＆gt; “你确定吗？”，：method =＆gt; ：删除％＆gt;或＆lt;％= link_to“删除”，delete_product_path（p），：confirm =＆gt; “你确定吗？”，：method =＆gt; ：删除％＆gt; ..我使用了我的路线资源..

问题：为什么？

注意：我也试过＆lt;％= link_to'删除'，delete_product_path（p）就像视频说的那样，它不适用于我

查看

<html>
<head>
    <title>MY STORE!</title>
</head>
<body>
    <h1><align="center"> WELCOME TO MY STORE</h1>
    <%= link_to 'Add Product', new_product_path %>
    <table border = "1" width="100%">
        <tr>
            <td>ID</td>
            <td>Name</td>
            <td>Image</td>

            <td>Size</td>
            <td>Price</td>
            <td>Created At</td>
            <td>Updated At</td>
            <td>Action</td>
        </tr>
        <% @product.each do |p| %>

        <tr>
            <td><%= p.id %></td>
            <td><%= p.name %></td>

            <td><%= p.size %></td>
            <td><%= p.price %></td>
            <td><%= p.created_at.strftime("%B, %d, %Y") %></td>
            <td><%= p.updated_at.strftime("%B, %d, %Y") %></td>
            <td>
            <%= link_to 'View', product_path(p) %>
            <%= link_to 'Edit', edit_product_path(p) %>
            <%= link_to 'Delete', delete_product_path(p), :confirm => "Are you sure?", :method => :delete %>
            </td>
        </tr>
        <% end %>

    </table>
</body>
</html>

路线

Rails.application.routes.draw do
 resources :products
  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end

控制器

class ProductsController < ApplicationController
  def index
    @product = Product.all.order('created_at DESC')

  end
  def show
    @post = Product.find(params[:id])
  end
  def new
    @product = Product.new
  end
  def create
    @post = Product.new(post_params)
    if @post.save
    redirect_to (products_path)
    else
    redirect_to (new_product_path)
    end
  end
  def edit
    @product = Product.find(params[:id])

  end
  def update
    @product = Product.find(params[:id])
    if @product.update_attributes(post_params)
    redirect_to (products_path)
    else
    redirect_to (products_path)
    end
  end
  def delete
    @product = Product.find(params[:id])
  end
  def destroy
    @product = Product.find(params[:id])
    @product.destroy
    redirect_to(products_path)

端私人的 def post_params params.require（：product）.permit（：name，：size，：price）端

end

Answer 1

你想要的是

<%= link_to 'Delete', p, method: :delete, data: { confirm: 'Are you sure?' } %>

路线是

/products/:id

因此命名路径不是delete_product_path。它是具有id的产品路径，并且使用方法delete来销毁它。

从控制器中删除delete方法并像这样设置destroy方法

  # DELETE /products/1
  # DELETE /products/1.json
  def destroy
    @product = Product.find(params[:id])
    @product.destroy
    respond_to do |format|
      format.html { redirect_to products_url, notice: 'Product was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

它寻找的方法是破坏。你永远不会打电话给＃34; .destroy＆＃34;这是实际删除记录的动作。你的方法所做的是根据id找到它，这就是它显示的原因。

产品中的NoMethodError＃delete方法中的索引

1 个答案: