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    <p>I'm not sure whether I understand your question. (it's 3:41 AM here)</p> <p>From what I see, you directly access <code>auction_id</code> method, instead of using <code>pike_path(auction, item)</code> that'd use <code>#to_param</code>.</p> <p>Also, it might fail for <code>auction/123/item/1</code> because you haven't changed your controller.</p> <p>I think it'd be helpful to describe how to get working slugs.</p> <p>Broadly speaking, if you override <code>#to_param</code>, IDs no longer works. It means, that if you go with slugs, every time polymorpic URL is generated (eg, <code>link_to object, object</code>), it passes to_param's value. It is worth noting that you must change your controller as well.</p> <p>Personally I think that the best way to generate slugs easily is to use techno-weenie's <a href="http://github.com/technoweenie/permalink_fu/tree/master" rel="noreferrer">permalink_fu</a>, adding <code>has_permalink</code> to your model, and then, override <code>to_param</code>. For example</p> <pre><code>class Auction &lt; ActiveRecord::Base has_permalink :title, :slug end </code></pre> <p>assuming that you have slug, a string field, and want to slugize your title.</p> <p>You also need to adjust your controller:</p> <pre><code>class AuctionsController &lt; ApplicationController def show @auction = Auction.find_by_slug(params[:id]) || raise(ActiveRecord::RecordNotFound) respond_to do |format| format.html # show.html.erb end end </code></pre> <p>Then, you can generate routes, in the views, this way:</p> <pre><code>link_to @action, @action </code></pre> <p>By the way, you should NOT sort your actions in the view. The best way is to use <code>named_scope</code>.</p>
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    1. COyou can use `find_by_slug!` which raises exception unless found
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