On Jan 11, 3:24 am, "Sasuke" <zhouj...@gmail.com> wrote: > Hi all, > I'm using the form's clean() method to do validation for models in admin. The > validation we need to do is to make sure there are no more than a certain > number of items totally submitted. So I calculate the total number of items > in the clean() method and check whether it is in the given range. But the > exact total number is difficult ot get because I don't know whether the newly > submitted form'data is a modified item that is already submitted or it's a > newly added item. So is there any way in the clean() method to know whether > the form's data is a newly added item or a modified one? > Thanks to all.
Check the value of self.instance. If it exists, and it has a pk, then it is a modification rather than an add. -- DR.
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