为什么 Rails 需要“link_to"对删除操作不起作用? [英] Why Rails "link_to" does not work for delete action?

问题描述

在 index.html.erb 中我显示所有产品，在每个产品旁边我有 Edit 和 Delete 操作:

In index.html.erb I display all products, and next to each product I have Edit and Delete actions:

<% @products.each do |product| %>
  ...
  <%= link_to("Edit", edit_product_path(product.id), :class => 'action') %>
  <%= link_to("Delete", product, :method => :delete, :class => 'action') %>
  ...
<% end %>

Edit 链接工作正常.但是，Delete 链接不起作用.我收到以下错误:

The Edit link works ok. However, the Delete link does not work. I get the following error:

Unknown action
The action 'show' could not be found for ProductsController

我猜是因为请求方法是GET而不是DELETE.但是，如果我明确设置 :method =>，我不知道为什么会发生这种情况.:删除.

I guess it is because the request method is GET rather than DELETE. But, I don't know why this happens if I set explicitly :method => :delete.

routes.rb 非常简单:

root :to => "products#index"
resources :products

我启用了 Javascript.

I have Javascript enabled.

请提出建议.

推荐答案

您是否在 javascript_include_tag 中指定了 rails.js?这是不显眼的 DELETE 方法工作所必需的.如果您使用 jQuery，那么还有一个 解决方案.

Do you have rails.js specified in a javascript_include_tag? This is required for the unobtrusive DELETE method to work. If you're using jQuery then there's a solution for that too.

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