def as_field(cls):
        field = object.__new__(FormAsField)
        field.__dict__.update(cls._root_field.__dict__)
        field.form_class = cls
        field.validators = cls._root_field.validators[:]
        field.fields = cls._root_field.fields.copy()
        return field
Returns a field object for this form.  The field object returned
dataset/ETHPy150Open mitsuhiko/fungiform/fungiform/forms.py/FormMeta.as_field