Django admin can't differentiate between empty string and None and
picks empty string which makes sense in most cases.
If you don't like the idea of empty string override the save method
and coerce empty string to None before calling the super classes save,
e.g.
class YourModel(models.Model):
...
def save(self, *args, **kwargs):
if self.naughty_field == '':
self.naughty_field = None
super(YourModel, self).save(*args, **kwargs)
Euan
On Jun 29, 4:15 pm, rahul jain <[email protected]> wrote:
> Hi there !
>
> One of my model fields attribute is set to null="true" to allow None
> values. But if I use admin to save those model objects and leave it
> blank, it saves blank value instead of None.
> How to fix this ?
>
> And Blank value is not None. Blank is "" (empty) but None is NULL in
> databases.
>
> -RJ
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