django-field-attributes / src / templatetags /

from string import strip
from django.template import Library

register = Library()

def field(field, *args, **kwargs):
    Substitute field widget attributes

    if kwargs.pop('required') in [True, 'True', 'required']:
        kwargs['required'] = 'required'
    return {'field': field}

def is_widget(value, arg):
    Check widget class name
    return value.field.widget.__class__.__name__ in map(strip, arg.split(','))
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