CODEWITHSUNDEEP
djangodjango-forms
Indika Rajapaksha
Indika Rajapaksha

Reputation: 1168

Populating field values in django forms

I want to know the best way to assign a generated value for model field in a django form. Here is the code for what I need to implement the logic.

Model:

class Booking:
    number = models.CharField(max_length=8)
    category = models.CharField(max_length=2)
    ref = models.CharField(max_length=10)

What I need to do is, store the combination of number + category in ref field when model is saved. I know there are two methods called save() and clean() available for this. But I'm not sure which one is the best to use.

Thanks.

Upvotes: 0

Views: 44

Answers (1)

Johan
Johan

Reputation: 3611

You can do this with a custom save function in the Booking model.

class Booking(models.Model):
    ...
    def save(self, *args, **kwargs):
        self.ref = "%s%s" % (self.number, self.category)
        super(Booking, self).save(*args, **kwargs)

Upvotes: 1

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