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POIs there a clean way to add functions to a dynamically created namespace?
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  1. POIs there a clean way to add functions to a dynamically created namespace?
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    copied!<p>I am creating a noir webapp, and I need to dynamically create new views and models. I've been following the noir examples, in which the view and the controller for a resource have separate namespaces, and I've found it to be a very clean approach.</p> <p>In keeping with this, I need to be able to dynamically create new namespaces corresponding to views and models, and then intern the appropriate functions in them. My idea was to have macros specified in a separate namespace which, when called in the new namespace, would provide the appropriate routes/partials/whatever. </p> <p>For example (forgive my first defmacro):</p> <pre><code>(ns project.views.proto (:use noir.core hiccup.core hiccup.element hiccup.form)) (defmacro def-all-page [path] `(defpage ~path [] (html [:h1 "Ya'll here"]))) </code></pre> <p>is called from...</p> <pre><code>(ns project.proto (:use [clojure.contrib.with-ns :only [with-ns]]) (create-ns 'foo) (intern 'foo 'path "path") ; In reality, the path is dynamic which is why I intern it (with-ns 'foo (clojure.core/refer-clojure) (use 'noir.core 'hiccup.core 'hiccup.element '[project.views.proto :only [def-all-page]]) (def-all-page path) </code></pre> <p>However, calling this from within my new namespace gives me a NullPointerException. I'd greatly appreciate any help, and whether or not there is a better approach. Like, just using refer for a namespace which contains all the necessary definitions?</p> <p>First post, and I don't think it's a repeat of <a href="https://stackoverflow.com/questions/8371850/variable-passed-to-macro-gets-resolved-in-wrong-namespace">this</a>. Thanks!</p>
 

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