/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

1 vote257 views1 answer
Django filter not equal to
Python Django
8 votes252 views2 answers
What does class meta do in django
Python Django
0 vote253 views1 answer
Django save another class data while saving a class
Python Django
0 vote233 views1 answer
Delete file in django terminal
Python Django
0 vote223 views1 answer
405 status code django
Python Django
0 vote261 views1 answer
How to get a mock image in django?
Python Django
0 vote222 views1 answer
Get users except superuser django
Python Django
0 vote264 views1 answer
Fetch last record from django model
Python Django
31 votes300 views6 answers
Django admin create superuser
Python Django
0 vote207 views1 answer
Django form is onvalid
Python Django