from trytond.model import fields
from trytond.pool import PoolMeta


class User(metaclass=PoolMeta):
    __name__ = 'res.user'

    digital_signature = fields.Binary(
        'Digital Signature', help='Signature image used on invoice reports.')

    # Alias used by invoice.fodt template
    z_digital_signature = fields.Function(
        fields.Binary('Digital Signature'),
        'get_z_digital_signature')

    def get_z_digital_signature(self, name):
        return self.digital_signature