Tuesday, October 26, 2010

Re: Query field across multiple django models

On 26 oct, 15:48, Ed <edmund.rog...@gmail.com> wrote:
> I do like this a lot.  If I use post_save, is there a way to grab the
> field that is altered?

Nope, you have to use "pre_save" for this, load another (yet
unmodified) copy of your model instance, and diff both.

> I know the admin page seems to be able to
> determine the changed field. . .


ModelForms do keep a copy of the initial state so they can tell what
went modified.

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