title: simple OR search with attributes in thinking-sphinx?
body: <p>Is it possible to perform a simple "OR" search in thinking-sphinx? here is a small example in pseudocode.</p>
  
  <pre><code>define_index do
    ...
    has :attr_a, :attr_b
  end
  
  Object.search @q, :conditions =&gt; {...some cond...}, :with =&gt; {:attr_a =&gt; value_a OR :attr_b =&gt; value_b}
  </code></pre>
  
  <p>Thanks</p>