On Thu, Dec 4, 2014 at 4:54 PM, inoyon artlover KLANGRAUSCH
<inoyonartlo...@googlemail.com> wrote:
> Hi there, I got a following Form-Class:
>
>
> class CustomUserprofileInterestsForm(forms.ModelForm):
>
> interests = forms.ModelMultipleChoiceField(
> queryset=Interests.objects.all(),
> widget=forms.CheckboxSelectMultiple)
>
>
> I want to limit the choices for example to 6 of all displayed.
> Is it possible with some optional arguments I don't know somehow?
>
You can write your own clean method on the form, e.g.:
def clean_interests(self):
value = self.cleaned_data['interests']
if len(value) > 6:
raise forms.ValidationError("You can't select more than 6 items.")
return value
See:
https://docs.djangoproject.com/en/1.7/ref/forms/validation/#form-and-field-validation
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