/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 vote303 views4 answers
Pip django graphql
Python Django
2 votes317 views1 answer
Django load model by name
Python Django
1 vote285 views1 answer
Django.db.models avg
Python Django
1 vote334 views1 answer
Cookies in django
Python Django
0 vote338 views1 answer
How to run django server outside world
Python Django
0 vote328 views1 answer
Get ip address in django
Python Django
2 votes381 views2 answers
Django queryset is in list
Python Django
0 vote325 views1 answer
Python django model range validation
Python Django
0 vote350 views1 answer
How to form .cleaned data in class based views in django
Python Django
0 vote271 views1 answer
Create and add many to many field in django
Python Django