/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

3 votes180 views3 answers
Simple jwt django
Python Django
0 vote196 views1 answer
Check this id exist in database django
Python Django
2 votes226 views1 answer
Django orm timestamp field
Python Django
1 vote179 views3 answers
Django reverse
Python Django
0 vote135 views1 answer
Summation django queryset
Python Django
0 vote192 views1 answer
Django rest framework not getting form
Python Django
0 vote198 views2 answers
Django create view filter options
Python Django
16 votes189 views6 answers
Django models
Python Django
0 vote191 views1 answer
Django import settings variables
Python Django
2 votes190 views3 answers
How to set indian timezone in django
Python Django