Add class to Django label_tag() output

Question

I need some way to add a class attribute to the output of the label_tag() method for a forms field.

I see that there is the ability to pass in an attrs dictionary a

Answer 1

class CustomBoundField(BoundField):
    def label_tag(self, contents=None, attrs=None):
        if self.field.required:
            attrs = {'class': 'required'}
        return super(CustomBoundField, self).label_tag(contents, attrs)

class ImportViewerForm(forms.Form):
    url = fields.URLField(widget=forms.TextInput(attrs={'class': 'vTextField'}))
    type = fields.ChoiceField(choices=[('o', 'Organisation'), ('p', 'Program')], widget=forms.RadioSelect,
                              help_text='Url contain infornation about this type')
    source = fields.ChoiceField(choices=[('h', 'hodex'), ('s', 'studyfinder')], initial='h', widget=forms.RadioSelect)

    def __getitem__(self, name):
        "Returns a BoundField with the given name."
        try:
            field = self.fields[name]
        except KeyError:
            raise KeyError('Key %r not found in Form' % name)
        return CustomBoundField(self, field, name)

class Media:
    css = {'all': [settings.STATIC_URL + 'admin/css/forms.css']}

You need change method label_tag in BoundField class, and use it in form