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POUsing Rails 3.1 assets pipeline to conditionally use certain css
 

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    <p>I’m in the process of building my first solo Rails app using Rails 3.1.rc5. My problem is that I want to have my site render the various CSS files conditionally. I’m using Blueprint CSS and I’m trying to have sprockets/rails render <code>screen.css</code> most of the time, <code>print.css</code> only when printing, and <code>ie.css</code> only when the site is accessed from Internet Explorer.</p> <p>Unfortunately, the default <code>*= require_tree</code> command in the <code>application.css</code> manifest includes everything in the <code>assets/stylesheets</code> directory and results in an unpleasant CSS jumble. My current workaround is a sort of brute-force method where I specify everything individually:</p> <p>In application.css:</p> <pre><code>*= require_self *= require home.css ... *= require blueprint/screen.css </code></pre> <p>In my stylesheets partial (haml):</p> <pre><code>&lt;!--[if lt IE 9] &lt;script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"&gt;&lt;/script&gt; ![endif]--&gt; = stylesheet_link_tag "application" = stylesheet_link_tag 'blueprint/print', media: 'print' &lt;!--[if lt IE8]] = stylesheet_link_tag 'blueprint/ie' ![endif]--&gt; = javascript_include_tag "application" </code></pre> <p>This works but it’s not especially pretty. I’ve done a few hours of searching to even get this far but I’m hoping that there’s some easier way to do it that I’ve just missed. If I could even selectively render certain directories (without including subdirectories) it would make the whole process a lot less rigid.</p> <p>Thanks!</p>
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