Django snippets: uuid model field

Django snippets: uuid model field

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)