django-bigfeat 0.1.0

Custom field to add multiple boolean features using a BigIntegerField.

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Django BigFeat
==============

Django BigFeat is custom field to add up to 63 boolean features using a BigIntegerField.

Quick start
-----------

from django.db import models
from bigfeat import BigFeatField

class ModelWithOptionalFeatures(models.Model):
FEATURES = {
'FEATURE_1' : 0x0000000000000001,
'FEATURE_2' : 0x0000000000000002,
'FEATURE_3' : 0x0000000000000004,
'FEATURE_4' : 0x0000000000000008,
...
'FEATURE_61' : 0x1000000000000000,
'FEATURE_62' : 0x2000000000000000,
'FEATURE_63' : 0x4000000000000000,
}
features = BigFeatField(masks=FEATURES)

m = ModelWithOptionalFeatures.objects.get(id=1)
print m.features.feature_1
if m.features.feature_2:
print m.features.feature_3 if m.features.feature_4 else m.features.feature_5
print m.features

Notes
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The most significant bit (0x8000000000000000) cannot be used since
BigIntegerField is stored as a signed integer and will cause an OverflowError