odoo-pos-addons/pos_restaurant_table_booking/models/restaurant_table.py

# -*- coding: utf-8 -*-
from odoo import models, fields


class RestaurantTable(models.Model):
    _inherit = 'restaurant.table'

    bookable = fields.Boolean(string="Bookable", default=False)

    def name_get(self):
        res = []
        for table in self:
            res.append((table.id, "{} ({} p.)".format(table.name, table.seats)))
        return res