Dusty-
The route generation is not fully baked yet. At this point you pass
in a hash to fill in the missing parts of the routes. I'm open for
suggestions about how this should work though.
Cheers-
-Ezra
On Jul 18, 2007, at 11:23 PM, Dusty Doris wrote:
> I have a question about the usage of Merb::Controller#url. When I
> have nested resources, requesting the new action works differently
> than I expected. I was wondering what the intended usage is.
>
> For example:
>
> Say I have
>
> r.resources :articles do |article|
> article.resources :article_attachments
> end
>
> irb(main):002:0> show_routes
>
> [:articles, "/articles"]
> [:article_attachments, "/articles/:article_id/article_attachments"]
> [:article_attachment, "/articles/:article_id/article_attachments/:id"]
> [:edit_article_attachment, "/articles/:article_id/
> article_attachments/:id/edit"]
> [:new_article_attachment, "/articles/:article_id/
> article_attachments/new"]
> [:custom_new_article_attachment,
> "/articles/:article_id/article_attachments/new/:action"]
> [:article, "/articles/:id"]
> [:edit_article, "/articles/:id/edit"]
> [:new_article, "/articles/new"]
> [:custom_new_article, "/articles/new/:action"]
> => nil
>
> If I find an article:
>
> irb(main):003:0> article = Article.find(1)
>
> => #<Article:0x341f2b4 @attributes={"intro"=>nil,
> "updated_at"=>"2007-07-18 21:31:35", "title"=>"asdf", "body"=>nil,
> "id"=>"1", "article_attachments_count"=>"2", "published_at"=>nil,
> "created_at"=>"2007-07-18 21:31:35"}>
>
> And an attachment of that article:
> irb(main):004:0> attachment = article.article_attachments.find(1)
>
> => #<ArticleAttachment:0x3410b60 @attributes={"content_type"=>"asdf",
> "updated_at"=>"2007-07-18 21:38:08", "public"=>"t", "id"=>"1",
> "filename"=>"asdf", "article_id"=>"1", "position"=>"1",
> "created_at"=>"2007-07-18 21:38:08"}>
>
> My expectation was that I would pass the object I want to evaluate to
> the url method. This works when I use edit_article_attachment. (note
> I added some debug puts statements in there before and after the
> SECTION_REGEXP sub)
>
> irb(main):005:0> url(:edit_article_attachment,attachment)
>
> --path before: /articles/:article_id/article_attachments/:id/edit
> --path after: /articles/1/article_attachments/1/edit
>
> => "/articles/1/article_attachments/1/edit"
>
> However, when having a new form on the page, I typically create the
> new action with an empty instance of that model.
>
> irb(main):006:0> new_attachment = article.article_attachments.new
>
> => #<ArticleAttachment:0x3406e94 @attributes={"content_type"=>nil,
> "updated_at"=>nil, "public"=>true, "filename"=>nil, "article_id"=>nil,
> "position"=>nil, "created_at"=>nil}, @new_record=true>
>
> But, that model doesn't yet have the article_id attached to it, so the
> url generation fails.
>
> irb(main):007:0> url(:new_article_attachment,new_attachment)
>
> --path before: /articles/:article_id/article_attachments/new
> --path after: /articles//article_attachments/new
>
> => "/articles//article_attachments/new"
>
> My expectation was that you should send the object that it is nested
> from, (before I realized what that regex match was doing). But I see
> that its looking for association id, rather than just the id, so that
> also fails.
>
> irb(main):008:0> url(:new_article_attachment,article)
>
> --path before: /articles/:article_id/article_attachments/new
> --path after: /articles//article_attachments/new
>
> => "/articles//article_attachments/new"
>
> However, an easy work around is to simply pass it a hash with the
> correct information in it.
>
> irb(main):009:0> url(:new_article_attachment,{:article_id =>
> article.id})
>
> --path before: /articles/:article_id/article_attachments/new
> --path after: /articles/1/article_attachments/new
>
> => "/articles/1/article_attachments/new"
>
> Is that the intended behavior?
>
>
> Thanks!
>
> Dusty Doris
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-- Ezra Zygmuntowicz
-- Founder & Ruby Hacker
-- [EMAIL PROTECTED]
-- Engine Yard, Serious Rails Hosting
-- (866) 518-YARD (9273)
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