oca-technical/odoo-bringout-oca-maintenance-maintenance_request_sequence/maintenance_request_sequence/models/maintenance_request.py

# Copyright 2019 Creu Blanca
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

from odoo import api, fields, models


class MaintenanceRequest(models.Model):

    _inherit = "maintenance.request"
    _rec_names_search = ["code"]

    code = fields.Char(readonly=True, copy=False, default="/")

    @api.model_create_multi
    def create(self, vals_list):
        for vals in vals_list:
            if vals.get("code", "/") == "/":
                team_id = vals.get("maintenance_team_id")
                sequence = self.env["maintenance.team"].browse(
                    team_id
                ).sequence_id or self.env.ref(
                    "maintenance_request_sequence.seq_maintenance_request_auto"
                )
                vals["code"] = sequence.next_by_id()
        return super().create(vals_list)