You can add a field via inheritance
If you still need to keep a reference to the original Site object/row, you can use multi-table inheritance
from django.contrib.sites.models import Site
class MySite(Site):
new_field = models.CharField(...)
def new_method(self):
# do something new
This allows you to have regular Site
objects, that may be extended by your MySite
model, in which case you can e.g. access the extra fields and methods through site.mysite
, e.g. site.mysite.new_field
.
Through model inheritance, you cannot alter an ancestor field
Through inheritance you cannot hide ancestor fields, because Django will raise a FieldError if you override any model field in any ancestor model.
And I wouldn't venture and write a custom DB migration for this, because then if you update Django, you may get schema conflicts with the Site model.
So here's what I would do if I wanted to store more info that the ancestor model allows:
class SiteLongName(Site):
long_name = models.CharField(max_length=60)
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