django-choices-enum
django-choices-enum allows the usage of the 2.x backport of Python 3.4's enum package (enum34) as choices in Django models.
from django.db import models
from django_choices_enum import ChoicesEnum
class Monster(models.Model):
class Types(str, ChoicesEnum):
BEAST = ('beast', 'Beast')
UNDEAD = ('undead', 'Undead')
HUMAN = ('human', 'Human')
name = models.CharField(max_length=40)
type = models.CharField(max_length=40, choices=Types.choices())
You may now write code like this:
monsters = Monster.objects.filter(type=Monster.Types.BEAST)
for m in monsters:
assert m.type == Monster.Types.BEAST
m = Monster(name='Vampire', type=Monster.Types.UNDEAD)
m.save()
Details
Each enumeration is a class subclassed from the type of the field and the ChoicesEnum type:
class MyIntEnumeration(int, ChoicesEnum):
A = (1, 'Label A')
Each constant is then assigned a tuple of (value, label) as expected by the Django choices parameter. If the constant and label are the same, you may omit the tuple and simply set the constant equal to the value of the choice.
Contributions
I did not really write most of this code. It was found and fixed from a Gist:
