title: How To Access Model Class Variable in Django Admin Change Form Template Before Save
body: <p>Say I have a model in which I have a class variable called <code>documentation</code>. I want to access the <code>documentation</code> class variable in the given models change form template. How can I do this? After the instance has been saved I can access the class variable in the template with <code>{{original.documentation}}</code>.</p>
  
  <p><strong>Example Model</strong></p>
  
  <pre><code>class Person(models.Model):
      # How do I access this variable in my change form template 
      # before saving the new instace?
      documentation = "The Person model will be used for all staff including researchers, professors, and authors."
  
      first_name = models.CharField(max_length=255)
  </code></pre>