title: Django model to admin, integer fields and textfield are not visible in admin section
body: <pre><code>class Student(models.Model):
      first_name = models.CharField(max_length=30)
      last_name = models.CharField(max_length=30)
      father_name = models.CharField(max_length=60)
      age = models.SmallIntegerField
      created = models.DateTimeField(auto_now=False, auto_now_add=True)
      modified = models.DateTimeField(auto_now=True, auto_now_add=False)
      address = models.TextField
      email = models.EmailField(default="")
      id = models.AutoField
      std = models.SmallIntegerField
      remarks = models.TextField
  </code></pre>
  
  <p>I have created a model called Student and added it to Django admin and migrated it. There was no problem with migration. When I tried to add a new student via admin page, I am only getting following fields, How can I get integer fields like  age in UI?
  <a href="https://i.stack.imgur.com/lXQA3.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lXQA3.jpg" alt="enter image description here"></a></p>