Rails form_for 与嵌套资源：“没有路由匹配”

发布于 2024-12-14 12:38:58 字数 983 浏览 3 评论 0原文

我的 routes.rb 文件中有以下嵌套资源。内部资源指定控制器名称。

resources :batches, :except => [:new], :path => "sets" do
  resources :tags, :controller => "batches_tags"
end

在 BatchesTags#new 的视图中，我尝试构建一个表单：

<%= form_for [@batch, @tag], :url => batch_tag_path do |f| %>
  ...
<% end %>

尝试加载此页面 (/sets/1/tags/new) 为我提供了一个 ActionController：：路由错误，消息如下：

没有路线匹配 {:action=>"show", :controller=>"batches_tags"}

但是当我运行 $ rake paths 时，它清楚地显示了这条路线确实存在：

batch_tag GET    /sets/:batch_id/tags/:id(.:format)        {:action=>"show", :controller=>"batches_tags"}

有谁知道如何修复这个错误？

编辑：

在Batches#show视图中，我使用相同的batch_tag_path函数并且它工作得很好：

<%= link_to "...", batch_tag_path(@batch, tag) %>

原文

I have the following nested resources in my routes.rb file. The inner resource specifies a controller name.

resources :batches, :except => [:new], :path => "sets" do
  resources :tags, :controller => "batches_tags"
end

In the view for BatchesTags#new, I am trying to build a form:

<%= form_for [@batch, @tag], :url => batch_tag_path do |f| %>
  ...
<% end %>

Attempting to load this page (/sets/1/tags/new) gives me a ActionController::RoutingError with the message:

No route matches {:action=>"show", :controller=>"batches_tags"}

But when I run $ rake routes, it clearly shows this route does exist:

batch_tag GET    /sets/:batch_id/tags/:id(.:format)        {:action=>"show", :controller=>"batches_tags"}

Does anyone know how to fix this error?

Edit:

In the view for Batches#show, I use that same batch_tag_path function and it works perfectly:

<%= link_to "...", batch_tag_path(@batch, tag) %>

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梦冥 2024-12-21 12:38:58

事实证明，虽然 batch_tag_path 是一条有效的路由（使得“无路由匹配”错误消息非常混乱），但我需要的路径是复数的 batch_tags_path，如 $ rake paths 输出所示：

batch_tags GET    /sets/:batch_id/tags(.:format)   {:action=>"index", :controller=>"batches_tags"}
           POST   /sets/:batch_id/tags(.:format)   {:action=>"create", :controller=>"batches_tags"}

也许错误消息意味着 batch_tag_path 不是 POST 的有效路由？

It turns out that, while batch_tag_path is a valid route (making the "No route matches" error message very confusing), the path I needed was the pluralized batch_tags_path, as seen in this $ rake routes output:

batch_tags GET    /sets/:batch_id/tags(.:format)   {:action=>"index", :controller=>"batches_tags"}
           POST   /sets/:batch_id/tags(.:format)   {:action=>"create", :controller=>"batches_tags"}

Perhaps the error message meant that batch_tag_path wasn't a valid route for POST?

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