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POScalatra: Generate reverse route from another Servlet
 

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    <h2>Use-case</h2> <p>I'm writing a simple REST api to evaluate Scalatra for my needs. I have two controllers (servlets?), mounted to <code>/items/*</code> and <code>/categories/*</code> in <code>ScalatraBootstrap</code>. I want a <code>GET</code> request to <code>/items/1</code> to return something like this:</p> <pre><code>{ "name": "item1", "category": { "url": "/categories/1" } } </code></pre> <p>I can't find a way to generate <code>/categories/1</code>. The last section in <a href="http://www.scalatra.org/2.2/guides/http/reverse-routes.html" rel="nofollow">http://www.scalatra.org/2.2/guides/http/reverse-routes.html</a> looks like what I need, except it doesn't describe a way to use the functionality across servlets.</p> <h2>What I tried</h2> <ul> <li>Created a companion object for the servlet responsible for <code>/categories</code>, and tried to use the <code>Route</code> from there. I got an exception with the message <code>requirement failed: routeBasePath requires the servlet to be initialized</code>. This leads me to believe that there's some conceptual limitation that prevents this usage, but then the documentation says that <code>ScalateUrlGeneratorSupport</code> does even more than this. I'm confused.</li> <li>Copy-pasted the trait removed in <a href="https://github.com/ornicar/scalatra/commit/625f8a287d466122d8a0774b71188a62ec07ecb6" rel="nofollow">https://github.com/ornicar/scalatra/commit/625f8a287d466122d8a0774b71188a62ec07ecb6</a>, mixed it into the <code>items</code> servlet, tried to get the route based on the route name. Resulting exception: <code>scala.runtime.BoxedUnit cannot be cast to org.scalatra.Route</code></li> </ul> <p>To make the question explicit: is there a way to use a named <code>Route</code> from one servlet to generate a URL in another servlet?</p> <p>(Please feel free to correct my terminology, I'm coming pretty fresh from Python-land)</p>
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