/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 vote246 views1 answer
Django form label in template
Python Django
1 vote278 views2 answers
How to get user id django
Python Django
0 vote252 views1 answer
Django Signup form
Python Django
0 vote256 views1 answer
Basic get method in class based view django
Python Django
0 vote252 views1 answer
Django admin required decorator
Python Django
29 votes313 views5 answers
Static dirs django
Python Django
0 vote265 views1 answer
Custom permission class django rest framework
Python Django
0 vote264 views1 answer
Whitelist the ip address django
Python Django
25 votes295 views2 answers
Django create app command
Python Django
15 votes257 views4 answers
Q django
Python Django