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copied!<p>The <a href="http://api.rubyonrails.org/classes/ActionDispatch/Routing/Mapper/Base.html#method-i-match" rel="nofollow"><code>match</code> method</a> should recognize the <code>:id</code>:</p> <blockquote> <p>Any options not seen here are passed on as params with the url.</p> </blockquote> <p>I don't know why <code>:id</code> and <code>:page_id</code> are being treated differently. You could use <a href="http://guides.rubyonrails.org/routing.html#defining-defaults" rel="nofollow"><code>:defaults</code></a> to set default values in <code>params</code> though:</p> <blockquote> <p>You can also define other defaults in a route by supplying a hash for the <code>:defaults</code> option. This even applies to parameters that you do not specify as dynamic segments.</p> </blockquote> <p>So try this:</p> <pre><code>Page.all.each do |page| page.url = "/" + page.self_and_ancestors.map { |p| p.slug }.join("/") page.save match page.url => "pages#show", :defaults => { :id => page.id } end </code></pre> <p>Note that that will update each <code>page</code> every time your <code>routes.rb</code> is loaded and that might not be what you're looking for. You might want to put the URL setting elsewhere and just have this:</p> <pre><code>Page.all.each do |page| match page.url => 'pages#show', :defaults => { :id => page.id } end </code></pre> <p>in your <code>routes.rb</code>.</p> <p>The usual approach for this would be to have one route:</p> <pre><code>get '/:slug' => 'pages#show', :constraints => { :slug => %r([\p{Alnum}_.-/]+) } </code></pre> <p>And then use the <code>:slug</code> instead of the <code>:id</code> to find the page:</p> <pre><code>def show @page = Page.find_by_url(params[:slug]) #... end </code></pre> <p>Then you don't have to worry about dynamic routes at all, you just need to make sure the <code>url</code>s are right and that they're indexed. The precise form of the <code>:constraints</code> that you use would depend on what your <code>url</code> values look like. You'll also want to put this route at the bottom of your <code>routes.rb</code>.</p>

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