title: React Router and onEnter/onChange
body: <p>I want to use <code>onEnter</code> and <code>onChange</code> from React Router, but I don't quite understand how. When I run simple functions from there, it works, like this:</p>
  
  <pre><code>&lt;Route path="/tag/:slug" component={Archives} onChange={() =&gt; { console.log('awd'); }} /&gt;
  </code></pre>
  
  <p>But when I try to use a method from <code>Archives</code> component, it doesn't.</p>
  
  <pre><code>&lt;Route path="/tag/:slug" component={Archives} onChange={this.method()} /&gt;
  </code></pre>
  
  <p>How can I use those methods?</p>