title: wildcard link to parent route reactjs
body: <p>Let's say I have a class handler that would respond on both /handle and /handle/:id.<br>
  I have a problem :<br>
  The component(in this case , the handler class ) that is shown on both pages has buttons that take me from one to an other, for example a button that gets me from /handle to /handle/195 and another that gets me from /handle/195 to /handle. </p>
  
  <p>So a button on /handle having:</p>
  
  <pre><code>onClick={()=&gt;{hashistory.push('/handle/195')}} 
  </code></pre>
  
  <p>which works perfectly, but the one on /handle/195 with:</p>
  
  <pre><code>onClick={()=&gt;{hashistory.push('/handle')}}
  </code></pre>
  
  <p>does not, does anyone know how to redirect to parent URL using hashistory?
  I apologize if my problem was poorly explained. I tried to do my best.</p>
  
  <p>Thanks.</p>