title: carrierwave doesn't render, path exists but image doesn't show up
body: <p>ive been trying to render a picture from carrierwave. i believe it is uploaded correctly because when i view the page source, i see</p>
  
  <pre><code>&lt;img alt="Photo_44" src="/uploads/user/image/59/Photo_44.jpg" /&gt;
  </code></pre>
  
  <p>however by clicking on that src url, i get</p>
  
  <pre><code>No route matches [GET] "/uploads/user/image/59/Photo_44.jpg"
  </code></pre>
  
  <p>im using the default settings for carrierwave. the image does correctly get uploaded to my image column in my users table and locally, the path </p>
  
  <p>sasha/Desktop/rails_projects/myproject/public/uploads/user/image/59/Photo_44.jpg</p>
  
  <p>exists as well. however it won't display correctly. ive been following the railscasts</p>
  
  <p><a href="http://railscasts.com/episodes/253-carrierwave-file-uploads?autoplay=true" rel="nofollow">http://railscasts.com/episodes/253-carrierwave-file-uploads?autoplay=true</a></p>
  
  <p>and reading</p>
  
  <p><a href="https://github.com/jnicklas/carrierwave" rel="nofollow">https://github.com/jnicklas/carrierwave</a></p>
  
  <p>but i cant seem to figure out what is wrong. where i upload the image is here</p>
  
  <pre><code>&lt;%= form_for(resource, :as =&gt; resource_name, :url =&gt; registration_path(resource_name), 
              :html =&gt; { :method =&gt; :put, :multipart =&gt; true }) do |f| %&gt;
      &lt;%= devise_error_messages! %&gt;
      &lt;%= render '/shared/fields', object: f.object, f: f %&gt;
      &lt;%= f.submit "Save changes", :class =&gt; "btn btn-large btn-primary", :style =&gt;"display:block;" %&gt;
      &lt;div class="edit_avatar" &gt;
          &lt;%= f.file_field :image %&gt;
      &lt;/div&gt;
  &lt;% end %&gt;
  </code></pre>
  
  <p>and im trying to render it by...</p>
  
  <pre><code>&lt;%= image_tag @user.image_url.to_s %&gt;
  </code></pre>
  
  <p>what am i doing wrong?
  help would be appreciated = )
  thank you</p>