social/mass_mailing_custom_unsubscribe/hooks.py

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# Copyright 2018 David Vidal <david.vidal@tecnativa.com>
# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
from odoo import api, SUPERUSER_ID
def post_init_hook(cr, registry):
"""Ensure all existing contacts are going to work as v10"""
env = api.Environment(cr, SUPERUSER_ID, {})
contacts = env['mail.mass_mailing.contact'].search([])
for contact in contacts:
if len(contact.list_ids) <= 1:
continue
list_1 = contact.list_ids[0]
for list_ in contact.list_ids - list_1:
contact.copy({"list_ids": [(6, 0, list_.ids)]})
contact.list_ids = list_1