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pythondjangotagsdjango-taggit

How can you limit the maximum number of tags an object can have in django-taggit?

I've been really impressed with the implementation of django-taggit as an application for handling tags within Django. However, I have been unable to find a way to set a maximum number of tags which can be applied to an object - a 'MAX_TAG' if you will. Is this possible? I'd like to limit my application to, for example, only 5 tags per object.

Thanks,

J

Solution

  • I've solved this in the admin model:

    class MyObjectAdminForm(forms.ModelForm):
    class Meta:
        model = MyModel

    def clean_tags(self):
        tags = self.cleaned_data['tags']
        if len(tags) > 3:
            raise ValidationError("....")
        return tags

class MyObjectAdmin(admin.ModelAdmin):
    form = MyObjectAdminForm