So it would seem that there is huge level of subtly in how these path helpers
behave based on how your pluralize the helper. So, what I should have written
(and what now appears to work) was:
<%= form_for @thread, :as => :thread, :url => thread_message_path(@thread,
@message) do |f| %>
So that's thread_message_path, not thread_messages_path.
However, despite trying other options, it seems I still have to specify the
HTTP verb as part of the 'new' case:
<%= form_for @thread, :as => :thread, :url => thread_messages_path(@thread),
:html => {:method => :post} do |f| %>
Failing to specify :post results in the form thinking it should be PUTing
instead of POSTing:
<form action="/threads/1/messages" class="thread_edit" id="thread_edit"
method="post"><div style="margin:0;padding:0;display:inline"><input
name="_method" type="hidden" value="put" />
-Mike
On May 30, 2010, at 8:05 PM, Michael Jurewitz wrote:
> Hi there,
>
> I can't seem to get form_for to work correctly with the URL I'm providing for
> a set of nested resources. Here's what I'm doing in routes.rb:
>
> resources :threads do
> resources :messages
> end
>
> And then I've got the following form that I'm building as part of
> /threads/1/messages/1/edit. Both @thread and @message are set by the
> controller
>
> ....
> <%= form_for @thread, :as => :thread, :url => thread_messages_path(@thread,
> @message) do |f| %>
> <%= fields_for :message do |m| %>
> .....
> <% end %>
> <%= submit_tag "Update Message" %>
> <% end %>
>
> This is producing the following HTML:
>
> <form action="/threads/1/messages.1" class="thread_edit" id="thread_edit"
> method="post"><div style="margin:0;padding:0;display:inline"><input
> name="_method" type="hidden" value="put" />
>
> Notice that while the HTTP method is correctly PUT, the form action ends in
> .1 instead of /1, which is confusing the router.
>
>
> Curiously, the 'new' case seems to be getting properly constructed, though I
> had to manually specify the :method to properly generate the URL:
>
> <%= form_for @thread, :as => :thread, :url => thread_messages_path, :html =>
> {:method => :post} do |f| %>
> <%= fields_for :message do |m| %>
> ...
> <% end %>
> <%= submit_tag "Create Reply" %>
> <% end %>
>
>
> Am I doing something obviously wrong or is this a deficiency in the path
> convenience methods? Note that I am using ":as =>" all over the place
> because the name of my model object (which is actually "Axthread") does not
> cleanly map to a named route, and using "thread" as a model name is not an
> option.
>
> -Mike
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