Hi,
I'm trying to have a model inherit from another which has a custom
field:
import uuid
from django.db import models
from django.db.models.fields import CharField
class UuidField(CharField): # <------------- The custom field
def __init__(self, verbose_name=None, name=None, auto=False,
**kwargs):
self.auto = auto
kwargs['max_length'] = 36
kwargs['unique'] = True
if auto:
kwargs['editable'] = False
kwargs['blank'] = True
super(UuidField, self).__init__(verbose_name, name, **kwargs)
def pre_save(self, model_instance, add):
value = super(UuidField, self).pre_save(model_instance, add)
if (not value) and self.auto:
# Assign a new value for this attribute if required.
value = str(uuid.uuid1())
setattr(model_instance, self.attname, value)
return value
def get_internal_type(self):
return "UuidField"
Then, I do:
class AbstractClass(models.Model):
uuid = UuidField(auto=True)
name = models.CharField(max_length=80, blank=True)
class Meta:
abstract = True
class MyClass(AbstractClass):
title = models.CharField(max_length=80, blank=True)
The problem is that when I run syncdb, the table 'myclass' only
contains the attributes 'name' and 'title', not 'uuid'.
What am I missing. Do I need to alter the UUIField class to make it
compatible with model inheritance?
Thanks a lot!
Julien
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