cooperative-market/beesdoo_base/models/membercard.py

from odoo import models, fields, api
import uuid

class MemberCard(models.Model):

    def _get_current_user(self):
        return self.env.uid

    def _compute_bar_code(self):
        rule = self.env['barcode.rule'].search([('name', '=', 'Customer Barcodes')])[0]
        size = 13 - len(rule.pattern)
        ean = rule.pattern + str(uuid.uuid4().fields[-1])[:size]
        return ean[0:12] + str(self.env['barcode.nomenclature'].ean_checksum(ean))

    _name = 'member.card'
    _order = 'create_date desc'

    valid = fields.Boolean(default=True, string="Active")
    barcode = fields.Char("Barcode", oldname='ean13', default=_compute_bar_code)
    partner_id = fields.Many2one('res.partner') #, default=_get_current_client)
    responsible_id = fields.Many2one('res.users', default=_get_current_user, string="Responsible")
    end_date = fields.Date(readonly=True, string="Expiration Date")
    comment = fields.Char("Reason", required=True)