Ruby-on-rails 用于自定义操作的 Rails 3 表单
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Rails 3 Form For Custom Action
提问by Andrew
I'm having trouble routing a form to a custom action in Rails 3. Here are my routes:
我在 Rails 3 中将表单路由到自定义操作时遇到问题。以下是我的路由：
resources :photos do
resources :comments
collection do
get 'update_states'
end
member do
put 'upload'
end
end
Here's the form_for:
这是form_for：
form_for @photo, :remote => true, :url => { :action => upload_photo_path(@photo) }, :html => { :multipart => :true, :method => 'put' } do |f|
And here's the error message:
这是错误消息：
No route matches {:action=>"/photos/42/upload", :controller=>"photos"}
... this is especially frustrating because "photos/:id/upload" is exactlythe correct action for this form.
...这尤其令人沮丧，因为“photos/:id/upload”正是此表单的正确操作。
What am I missing?
我错过了什么？
EDITS - Here are the original Photo-related routes:
编辑 - 以下是与照片相关的原始路线：
photo_comments GET /photos/:photo_id/comments(.:format) {:action=>"index", :controller=>"comments"}
POST /photos/:photo_id/comments(.:format) {:action=>"create", :controller=>"comments"}
new_photo_comment GET /photos/:photo_id/comments/new(.:format) {:action=>"new", :controller=>"comments"}
edit_photo_comment GET /photos/:photo_id/comments/:id/edit(.:format) {:action=>"edit", :controller=>"comments"}
photo_comment GET /photos/:photo_id/comments/:id(.:format) {:action=>"show", :controller=>"comments"}
PUT /photos/:photo_id/comments/:id(.:format) {:action=>"update", :controller=>"comments"}
DELETE /photos/:photo_id/comments/:id(.:format) {:action=>"destroy", :controller=>"comments"}
update_states_photos GET /photos/update_states(.:format) {:action=>"update_states", :controller=>"photos"}
upload_photo PUT /photos/:id/upload(.:format) {:action=>"upload", :controller=>"photos"}
photos GET /photos(.:format) {:action=>"index", :controller=>"photos"}
POST /photos(.:format) {:action=>"create", :controller=>"photos"}
new_photo GET /photos/new(.:format) {:action=>"new", :controller=>"photos"}
edit_photo GET /photos/:id/edit(.:format) {:action=>"edit", :controller=>"photos"}
photo GET /photos/:id(.:format) {:action=>"show", :controller=>"photos"}
PUT /photos/:id(.:format) {:action=>"update", :controller=>"photos"}
DELETE /photos/:id(.:format) {:action=>"destroy", :controller=>"photos"}
Here are the relevant routes when I changed the route to match 'upload':
以下是我将路线更改为时的相关路线match 'upload'：
photo_comments GET /photos/:photo_id/comments(.:format) {:action=>"index", :controller=>"comments"}
POST /photos/:photo_id/comments(.:format) {:action=>"create", :controller=>"comments"}
}
new_photo_comment GET /photos/:photo_id/comments/new(.:format) {:action=>"new", :controller=>"comments"}
edit_photo_comment GET /photos/:photo_id/comments/:id/edit(.:format) {:action=>"edit", :controller=>"comments"}
photo_comment GET /photos/:photo_id/comments/:id(.:format) {:action=>"show", :controller=>"comments"}
PUT /photos/:photo_id/comments/:id(.:format) {:action=>"update", :controller=>"comments"}
DELETE /photos/:photo_id/comments/:id(.:format) {:action=>"destroy", :controller=>"comments"}
update_states_photos GET /photos/update_states(.:format) {:action=>"update_states", :controller=>"photos"}
upload_photo /photos/:id/upload(.:format) {:action=>"upload", :controller=>"photos"}
photos GET /photos(.:format) {:action=>"index", :controller=>"photos"}
POST /photos(.:format) {:action=>"create", :controller=>"photos"}
new_photo GET /photos/new(.:format) {:action=>"new", :controller=>"photos"}
edit_photo GET /photos/:id/edit(.:format) {:action=>"edit", :controller=>"photos"}
photo GET /photos/:id(.:format) {:action=>"show", :controller=>"photos"}
PUT /photos/:id(.:format) {:action=>"update", :controller=>"photos"}
DELETE /photos/:id(.:format) {:action=>"destroy", :controller=>"photos"}
Unfortunately 'match' didn't work any better...
不幸的是，“匹配”没有更好的效果......
-- EDIT --
- 编辑 -
Just to confirm another scenario here... with this in the routes:
只是为了确认这里的另一个场景......在路线中使用这个：
resources :photos do
resources :comments
collection do
get 'update_states'
end
member do
match 'upload'
end
end
and this in the view:
这在视图中：
form_for @photo, :remote => true, :url => { :action => 'upload' }, :html => { :multipart => :true, :id => 'photo_upload' } do |f|
form_for @photo, :remote => true, :url => { :action => 'upload' }, :html => { :multipart => :true, :id => 'photo_upload' } do |f|
I still get:
我仍然得到：
No route matches {:action=>"upload", :controller=>"photos"}
No route matches {:action=>"upload", :controller=>"photos"}
回答by davemyron
What if you did just :url => upload_photo_path(@photo)?
如果你只是这样做:url => upload_photo_path(@photo)呢？
It seems a little strange that you'd be uploading to a member though. Is this just a creation method (in which case you should just POST to the collection path)?
不过，您要上传给会员似乎有点奇怪。这只是一种创建方法吗（在这种情况下，您应该只 POST 到集合路径）？
回答by LisaD
I had the same problem and finally worked through to a solution which I'm not sure was reached in the above case, since the original poster moved on to another approach.
我遇到了同样的问题，最终找到了一个解决方案，我不确定在上述情况下是否达到了该解决方案，因为原始海报转向了另一种方法。
My routes had
我的路线有
resources :members do
member do
get "invite"
post 'register'
end
end
And "rake routes" included
和“耙路线”包括
register_member POST /members/:id/register(.:format) {:protocol=>"http", :action=>"register", :controller=>"members"}
Yet I kept getting the error
但我一直收到错误
Started POST "/members/149/register" for 127.0.0.1 at 2012-04-13 13:18:35 -0700
ActionController::RoutingError (No route matches "/members/149/register"):
Rendered /Users/lisa/.rvm/gems/ruby-1.9.2-p180@stv/gems/actionpack-3.0.9/lib/action_dispatch/middleware/templates/rescues/routing_error.erb within rescues/layout (1.1ms)
and the problem was limited only to the form generated by Rails according to the below form_for (note I confirmed this using HTTP client to manually POST to the URL and saw it was finding the route)
并且问题仅限于 Rails 根据下面的 form_for 生成的表单（注意我使用 HTTP 客户端确认了这一点，手动 POST 到 URL 并看到它正在查找路由）
<%= form_for @account, :url => register_member_path(@account.id) do |account_form| %>
...
I checked the method, I checked the path, everything looked good. What I finally noticed, scouring the generated form line by line:
我检查了方法，我检查了路径，一切看起来都很好。我终于注意到了，逐行搜索生成的表单：
<form accept-charset="UTF-8" action="/members/149/register" class="edit_member" id="edit_member_149" method="post">
<div style="margin:0;padding:0;display:inline">
<input name="utf8" type="hidden" value="✓" />
<input name="_method" type="hidden" value="put" />
<input name="authenticity_token" type="hidden" value="74pkMgRHfdowSfzjJGMILkAsivVNrJZ0iWYXRUgxyF0=" />
</div>
...
Notice the hidden input name="_method". I wish the fact that Rails was interpreting this as a PUT had shown up in the logs, that would have made my debugging a lot faster. I fixed it by telling the form explicitly to use the POST method, which of course it was already, but telling it that removed the hidden _method override. I assume there's some facet about @account which triggered Rails to use the _method parameter, but @account should be an existing record.
注意隐藏的输入名称="_method"。我希望 Rails 将其解释为 PUT 已显示在日志中，这将使我的调试速度更快。我通过明确告诉表单使用 POST 方法来修复它，当然它已经是这样，但是告诉它删除了隐藏的 _method 覆盖。我假设 @account 有一些方面触发 Rails 使用 _method 参数，但 @account 应该是现有记录。
回答by David Sulc
Your urlparameter should be
你的url参数应该是
:url => { :action => "upload" }
:url => { :action => "上传" }
(Original reply)
（原回复）
I would bet it's because your route expects a PUTand your form is sending a POST(probably because @photo = Photo.new). You have several options:
我敢打赌这是因为您的路线需要 aPUT而您的表单正在发送 a POST（可能是因为@photo = Photo.new）。您有多种选择：
- Change your route to
post 'upload' - Create your form with
form_for @photo, :as => :postwith the rest of your arguments - Make sure
@photois an existing record (e.g. by callingcreateinstead ofnew)
- 将您的路线更改为
post 'upload' form_for @photo, :as => :post使用其余参数创建表单- 确保
@photo是现有记录（例如通过调用create而不是new）
The most appropriate choice is probably one of the first 2.
最合适的选择可能是前两个之一。
