Rails - Nov 2006 - mapping resources twice ?

Named changed to protect the innocent.


So I have

map.resources :stories do |story|
   story.resources :comments
end

This lets me have /story/1/comments or /story/1/comment/3.

If I want to still have access to plain old /comments to give me all
comments across all stories do I need to have:

map.resources :comments

map.resources :stories do |story|
   story.resources :comments
end


Is this allowed ?  Can I map the same resource into two different
contexts ?

Alan

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Hi --

On Mon, 27 Nov 2006, Alan Francis wrote:
>
> Named changed to protect the innocent.
>
>
> So I have
>
> map.resources :stories do |story|
>   story.resources :comments
> end
>
> This lets me have /story/1/comments or /story/1/comment/3.
>
> If I want to still have access to plain old /comments to give me all
> comments across all stories do I need to have:
>
> map.resources :comments
>
> map.resources :stories do |story|
>   story.resources :comments
> end
>
>
> Is this allowed ?  Can I map the same resource into two different
> contexts ?
The thing is, when you call resources, you create methods called
comments_url, comment_url, etc.  So if you create those methods twice,
the second set take precedence.

There are a couple of things you can do.  One is [untested so tweak if
I''ve mistyped it]:

   map.resources :comments
   map.resources :stories do |story|
     story.resources :comments, :name_prefix => "inner_"
   end

Now you''ll have:

   comment_url(@comment)
   inner_comment_url(@story, @comment)

You can also add the :name_prefix to the plain comments resources, if
you''d rather have it work that way.

Another thing you can do -- but be warned; it''s very experimental, and
also may or may not suit your schema -- is use my Inferred Routes
plugin.  This allows you to do just the nested route, and then when
you do:

   comment_url(@comment)

the plugin will infer:

   comment_url(@comment.story, @comment)

You can get the plugin at:
http://www.risleydale.net/svn/inferred_routes/tags/0.1.1


David

-- 
                   David A. Black |
dblack-TKXtfPMJ4Ozk1uMJSBkQmQ@public.gmane.org
Author of "Ruby for Rails"   [1] | Ruby/Rails training &
consultancy [3]
DABlog (DAB''s Weblog)        [2] | Co-director, Ruby Central, Inc.  
[4]
[1] http://www.manning.com/black | [3] http://www.rubypowerandlight.com
[2] http://dablog.rubypal.com    | [4] http://www.rubycentral.org

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>    map.resources :comments
>    map.resources :stories do |story|
>      story.resources :comments, :name_prefix => "inner_"
>    end
> 
> Now you''ll have:
> 
>    comment_url(@comment)
>    inner_comment_url(@story, @comment)
Hi David,

That looks like it''ll fit the bill perfectly.

 map.resources :comments, :name_prefix => "all_"

 map.resources :stories do |story|
    story.resources :comments, :name_prefix => "story_"
 end

Giving me all_comments_url (not likely to use singular here) and 
story_comment_url(@story, @comment)

Sweet.

Alan

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