pos/pos_meal_voucher/models/product_template.py

# Copyright (C) 2020 - Today: GRAP (http://www.grap.coop)
# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).

from odoo import api, fields, models


class ProductTemplate(models.Model):
    _inherit = 'product.template'

    meal_voucher_ok = fields.Boolean(
        string="Meal Voucher",
        help="Check this box if the product can be paid with meal vouchers."
    )

    @api.onchange("categ_id")
    def onchange_categ_id(self):
        for template in self:
            template.meal_voucher_ok = template.categ_id.meal_voucher_ok