Hello group,
Below is code for manual pre-save integrity check.
I think what I want is for the Validation Error (or an Integrity Error
if I go that way) to end up in forms.errors.
>From the form, I was doing:
return HttpResponseRedirect(reverse(student, args=[s.id]))
when I had a validation error.
Can't quite get it to work from the model.
Thanks for any leg up...
from django.newforms.util import ValidationError # ????
from django.db import IntegrityError # ????
class Change(models.Model):
other class code
def save(self):
if self.id:
record =
Change.objects.exclude(pk=self.id).filter(date=self.date).filter(student=self.student)
if record:
raise ValidationError, 'There is already a change for this
student on this date.'
else:
super(Change, self).save()
else:
record =
Change.objects.filter(date=self.date).filter(student=self.student)
if record:
raise ValidationError, 'There is already a change for this
student on this date.'
else:
super(Change, self).save()
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