uuid model field
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from django.db import models
import uuid
class UUIDField(models.CharField) :
def __init__(self, *args, **kwargs):
kwargs['max_length'] = kwargs.get('max_length', 64 )
kwargs['blank'] = True
models.CharField.__init__(self, *args, **kwargs)
def pre_save(self, model_instance, add):
if add :
value = str(uuid.uuid4())
setattr(model_instance, self.attname, value)
return value
else:
return super(models.CharField, self).pre_save(model_instance, add)
class Example(models.Model) :
uuid = UUIDField(primary_key=True, editable=False)
name = models.CharField(max_length=32)
value = models.CharField(max_length=255, blank=True)
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