<p>Currently our views are full of very verbose links to users, for example:</p>
<blockquote>
<p>link_to contact.display_name, :controller => 'user', :action => 'view',  :display_name => contact.display_name</p>
</blockquote>
<p>This can be simplified by using the "user_path" method, to something like</p>
<blockquote>
<p>link_to contact.display_name, user_path(contact.display_name)</p>
</blockquote>
<p>Normally this could be made even easier, since rails does the right thing with <code>model_path(model)</code> by default. However, since we use the <code>display_name</code> in the url rather than the <code>id</code>, we first need to define <code>to_param</code> on the User model:</p>
<pre><code>def to_param
  display_name
end
</code></pre>
<p>This then allows the links to be even more straightforward, namely:</p>
<blockquote>
<p>link_to contact.display_name, user_path(contact)</p>
</blockquote>

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