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copied!<p><a href="https://stackoverflow.com/questions/8863257/changing-view-formats-in-rails-3-1-delivering-mobile-html-formats-fallback-on/9493617#9493617">Possible Duplicate of</a> <a href="https://stackoverflow.com/questions/8863257/changing-view-formats-in-rails-3-1-delivering-mobile-html-formats-fallback-on/9493617#9493617">Changing view formats in rails 3.1 (delivering mobile html formats, fallback on normal html)</a></p> <p>However, I struggled with this exact same problem and came up with a fairly elegant solution that met my needs perfectly. Here is my answer from the other post. </p> <p>I think I've found the best way to do this. I was attempting the same thing that you were, but then I remembered that in rails 3.1 introduced <a href="http://railscasts.com/episodes/269-template-inheritance" rel="nofollow noreferrer">template inheritance</a>, which is exactly what we need for something like this to work. I really can't take much credit for this implementation as its all laid out there in that railscasts link by Ryan Bates.</p> <p>So this is basically how it goes. </p> <p>Create a subdirectory in <code>app/views</code>. I labeled mine <code>mobile</code>.</p> <p>Nest all view templates you want to override in the same structure format that they would be in the views directory. <code>views/posts/index.html.erb -> views/mobile/posts/index.html.erb</code></p> <p>Create a <code>before_filter</code> in your <code>Application_Controller</code> and do something to this effect.</p> <pre><code> before_filter :prep_mobile def is_mobile? request.user_agent =~ /Mobile|webOS|iPhone/ end def prep_mobile prepend_view_path "app/views/mobile" if is_mobile? end </code></pre> <p>Once thats done, your files will default to the mobile views if they are on a mobile device and fallback to the regular templates if a mobile one is not present. </p>

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