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copied!<p>the documentation seems to indicate this exact behavior is by design:</p> <blockquote> <p>:shallow - If true, paths for nested resources which reference a specific member (ie. those with an :id parameter) will not use the parent path prefix or name prefix.</p> </blockquote> <p>(from <a href="http://api.rubyonrails.org/classes/ActionController/Resources.html#M000501" rel="nofollow noreferrer">http://api.rubyonrails.org/classes/ActionController/Resources.html#M000501</a>)</p> <p>Since using the :shallow option will cause your :path_prefix to be ignored in some cases, if you must always have this prefix you should consider removing the :shallow option. Here's an alternate solution that appears to do what you need:</p> <pre><code>map.with_options :path_prefix => "blog" do |blog| blog.resources :posts do |posts| posts.resources :comments, :only => [:index, :create, :new] end blog.resources :comments, :except => [:index, :create, :new] end </code></pre> <p>Resulting in these routes:</p> <pre><code># posts GET /blog/posts {:controller=>"posts", :action=>"index"} # POST /blog/posts {:controller=>"posts", :action=>"create"} # new_post GET /blog/posts/new {:controller=>"posts", :action=>"new"} # edit_post GET /blog/posts/:id/edit {:controller=>"posts", :action=>"edit"} # post GET /blog/posts/:id {:controller=>"posts", :action=>"show"} # PUT /blog/posts/:id {:controller=>"posts", :action=>"update"} # DELETE /blog/posts/:id {:controller=>"posts", :action=>"destroy"} # post_comments GET /blog/posts/:post_id/comments {:controller=>"comments", :action=>"index"} # POST /blog/posts/:post_id/comments {:controller=>"comments", :action=>"create"} # new_post_comment GET /blog/posts/:post_id/comments/new {:controller=>"comments", :action=>"new"} # edit_comment GET /blog/comments/:id/edit {:controller=>"comments", :action=>"edit"} # comment GET /blog/comments/:id {:controller=>"comments", :action=>"show"} # PUT /blog/comments/:id {:controller=>"comments", :action=>"update"} # DELETE /blog/comments/:id {:controller=>"comments", :action=>"destroy"} </code></pre> <p>Hope this helps!</p>

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