/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 vote175 views1 answer
Django.com
Python Django
0 vote175 views1 answer
How to store a int value in django sessions
Python Django
1 vote174 views1 answer
Use django taggit in template
Python Django
19 votes184 views6 answers
Pip install django
Python Django
0 vote167 views1 answer
Queryset.raw() in django rest framework joining tables
Python Django
0 vote158 views1 answer
Get list of all document in django-elasticsearch-dsl
Python Django
0 vote164 views1 answer
Django override form fields in admin
Python Django
0 vote180 views2 answers
Generate-thumbnails-in-django-with-pil
Python Django
0 vote174 views1 answer
Access field values of form django
Python Django
0 vote160 views1 answer
Back button django template
Python Django