title: Access Model Data from Django Base Template
body: <p>I have a model <code>Category</code>, and I want its objects to always be displayed in a navigation menu in my <code>base.html</code> template <em>(which all of my other templates extend)</em>.</p>
  
  <p>I want to learn best-practices so would like to know what the correct/accepted way of providing this data to the template is.</p>