Field.default should accept callables

[Adrian Holovaty]

Field.default should accept callables, which would be evaluated at the time that the default value was set.

Example:

default=datetime.datetime.now

[hugo]

how about allowing full callbacks that get passed in a self reference? That would make from your sample:

default=lambda self: datetime.datetime.now()

but would allow cool things like:

default=lambda self: self.otherfield.lower()

Sure, those could be done by _pre_save, too, but defaults kick in before validators, while _pre_save kicks in afer validators, so you often have to set blank=True to allow _pre_save to set the default on new records.

[Adrian Holovaty]

Oooh, I like it!

[Adrian Holovaty]

This was fixed at some point a while ago.