/Python/Django/Validate delete inline formset django

Validate delete inline formset django

class RequiredImageInlineFormset(forms.models.BaseInlineFormSet):
    """ Makes inline fields required """

    def clean(self):
        # get forms that actually have valid data
        count = 0
        delete_checked = 0
        for form in self.forms:
            try:
                if form.cleaned_data:
                    count += 1
                    if form.cleaned_data['DELETE']:
                        delete_checked += 1
                    if not form.cleaned_data['DELETE']:
                        delete_checked -= 1
            except AttributeError:
                # annoyingly, if a subform is invalid Django explicity raises
                # an AttributeError for cleaned_data
                pass

        # Case no images uploaded
        if count < 1:
            raise forms.ValidationError(
                'At least one image is required.')

        # Case one image added and another deleted
        if delete_checked > 0 and ProductImage.objects.filter(product=self.instance).count() == 1:
            raise forms.ValidationError(
                "At least one image is required.")

Source: stackoverflow.com

Similar codes

0 vote349 views1 answer
Django refresh form db
Python Django
0 vote284 views1 answer
Import ArraField django
Python Django
0 vote284 views2 answers
Get ContentType with django get_model
Python Django
0 vote353 views1 answer
Django fixtures. To dump data
Python Django
0 vote296 views1 answer
Django change foreign key
Python Django
0 vote351 views1 answer
Django Abstract base classe
Python Django
0 vote318 views1 answer
Celery beat command for django celery beat
Python Django
1 vote281 views1 answer
Ls.ProgrammingError: permission denied for table django_migrations
Python Django
1 vote325 views1 answer
Select realted for foreign key table in django
Python Django
0 vote311 views1 answer
Redis in django channels
Python Django