title: how to retrieve data from a foreign key
body: <p>been coding since morning and i cant get any data from the auth_user. i made a class in my model. here's the code:</p>
  
  <pre><code>from django.contrib.auth.models import User as DjangoUser
  ......
  class Author(models.Model):
      """
      Data model that holds posts' authors as shown in author pages
      """
      django_user = models.ForeignKey(DjangoUser, primary_key=True)
      about = models.TextField('About', null=True, blank=True)
      avatar = ImageWithThumbsField('Pic', upload_to=settings.PATH_AVATAR, blank=True, null=True, sizes=settings.SIZES_AVATAR)
  </code></pre>
  
  <p>in my DjangoUser model, i want to get the first_name... </p>
  
  <p>what will i code in my view file to retrieve the first name of the author?</p>
  
  <p>thanks a lot. your answers i greatly appreciated...</p>