title: How can I access the primaryText from onChange method of SelectField?
body: <p>How can I access the primaryText from onChange method of SelectField? onChange provides only (event,index,value).</p>
  
  <p>my code:</p>
  
  <pre><code>&lt;SelectField 
      value={props.value} 
      onChange={this.handleChange}&gt; 
         {props.options.map(opt =&gt; { 
               return ( 
                  &lt;MenuItem key={opt._id} value={opt._id} primaryText={opt.name} &gt;&lt;/MenuItem&gt; 
               ); 
            }
         )}
  </code></pre>