

def clean(self):
    seen_drinks = []
    for drink in self.cleaned_data:
        if (drink['name'] in seen_drinks):
            raise ValidationError('You may only specify a drink once.')
        seen_drinks.append(drink['name'])

dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/tests/regressiontests/forms/tests/formsets.py BaseFavoriteDrinksFormSet.clean/original