/Python/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 vote83 views1 answer
Bfs in python 3
Python
0 vote99 views2 answers
Geckodriver' executable needs to be in path
Python
0 vote109 views1 answer
Taille du liste python
Python
80 votes60 views12 answers
Python3 if else
Python
16 votes105 views2 answers
What is self keyword in python
Python
1 vote112 views1 answer
Reload all extensions discord.py
Python
0 vote92 views1 answer
Pandas earliest date in column
Python
0 vote100 views1 answer
Load py file converted from .ui file
Python
1 vote152 views1 answer
Flask api with parameter
Python Flask
3 votes98 views1 answer
Python ftp upload file
Python