title: Access outer loop property in nested 'foreach'
body: <p>I have a nested foreach loop in Knockout.js and I want to access a property from the current object in the outer loop inside the inner loop.</p>
  
  <pre><code>&lt;!-- ko foreach: graduationDateRows --&gt;                  
    &lt;tr&gt;
      &lt;td class="center" data-bind="text: CalendarYear"&gt;&lt;/td&gt;  
      &lt;!-- ko foreach: $root.graduationDatesHeaders --&gt;
      &lt;td class="center" data-bind="text: /* !here! */"&gt;&lt;/td&gt; 
      &lt;td&gt;&lt;/td&gt;
      &lt;!-- /ko --&gt;                                                                  
    &lt;/tr&gt; 
  &lt;!-- /ko --&gt;
  </code></pre>
  
  <p>How would I do this?</p>