I've got a simple newsletter app with a subscription model with fields email and city. In this model I set unique_together('email', 'city') to avoid having subscription duplicates.
class Subscription(models.Model):
email = models.EmailField(_('Email'), max_length=75)
create_date = models.DateField(_("开发者_如何学PythonCreation Date"))
city = models.ForeignKey(City)
class Meta:
unique_together = ('email', 'city')
I created a forms.ModelForm from this model:
class SubscriptionForm(forms.ModelForm):
class Meta:
model = Subscription
This is ok when I create a subscription, but when I want to delete a subscription, using the same form, the form does not validate when setting an existing email/subject pair because of the unique_together in the model. Is there any way to bypass this validation rule or should I write a specific form to unsubscribe?
Thank you
You can probably override the unique_together
in your SubscriptionForm
but this will remove the validation from your form (and will fail when you will save your model).
Or you can create a new UnSubscriptionForm
that will override this unique_together
setting only for unsubscription.
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