title: Django choices. How to set default option?
body: <p>How to set default <code>STATUSES</code> option ?</p>
  
  <pre><code>class Order(models.Model):
      STATUSES = (
          (u'E', u'Expected'),
          (u'S', u'Sent'),
          (u'F', u'Finished'),
      )
  
      status = models.CharField(max_length=2, null=True, choices=STATUSES)
  </code></pre>