title: incompatible character encodings: UTF-8 and ASCII-8BIT and thinking_sphinx
body: <p>I have a very common trouble in ruby 1.9.2 and rails 3.0.9 – <strong>incompatible character encodings: UTF-8 and ASCII-8BIT</strong> exception.
  It is raised when i use thinking_sphinx search.</p>
  
  <pre><code>def result
    #return page(1).per(1) #no any exceptions
    return search('').page(1).per(1) #if I use this an exception is raised when i try to render partial
  end
  </code></pre>
  
  <p>Then the result of this method is used in the partial</p>
  
  <pre><code>render Trademarks.result
  </code></pre>
  
  <p>I use both erb and haml (makeup man use html, and I prefer to use haml), but it's allowed by haml referrence.</p>
  
  <p>I've tried magic comments, default_internal, external and some other advices, but with no results. Any ideas?</p>