/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 vote320 views1 answer
Template tag django
Python Django
0 vote410 views1 answer
Relation api profile does not exist django
Python Django
0 vote314 views1 answer
Import sqlite to mysql django
Python Django
0 vote322 views1 answer
Django serializer get image list
Python Django
-4 votes278 views4 answers
Latest version of django
Python Django
0 vote337 views1 answer
Django collectstatic with auto yes
Python Django
0 vote300 views1 answer
Django project files
Python Django
0 vote324 views1 answer
How to create urls in django
Python Django
4 votes299 views2 answers
Django reset database
Python Django
0 vote306 views1 answer
The webpage at http://127.0.0.1:8000/ might be temporarily down or it may have moved permanently to a new web address. django
Python Django