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"""
21. Specifying 'choices' for a field
Most fields take a ``choices`` parameter, which should be a tuple of tuples
specifying which are the valid values for that field.
For each field that has ``choices``, a model instance gets a
``get_fieldname_display()`` method, where ``fieldname`` is the name of the
field. This method returns the "human-readable" value of the field.
"""
from django.db import models
GENDER_CHOICES = (
('M', 'Male'),
('F', 'Female'),
)
class Person(models.Model):
name = models.CharField(max_length=20)
gender = models.CharField(max_length=1, choices=GENDER_CHOICES)
def __unicode__(self):
return self.name
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