You must use ModelForms .
(updated)
1) In your models.py you define the choice:
CELLSERPRO_CHOICES = (
('ver', 'Verizon'),
('att', 'AT&T'),
('tmo', 'T-Mobile'),
('spr', 'Sprint'),
)
2) In your models.py inside the "class Author" you define the cellSerpro field as follows:
class Author(models.Model):
cellSerpro = models.CharField(max_length=3, choices=CELLSERPRO_CHOICES)
3) In your forms.py (create it if you don't have one), you define the form as follows:
class AuthorForm(ModelForm):
class Meta:
model = Author
4) , .