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# -*- coding: utf-8 -*-
# Copyright 2018 Tecnativa <https://www.tecnativa.com>
# Copyright 2018 Eficent <http://www.eficent.com>
# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
import logging
_logger = logging.getLogger(__name__)
def pre_init_hook(cr):
"""
This pre-creates before ORM related computation the field `res_model`,
for avoiding an error when writing back the value on virtual records
created by recurring events. No need of writing any possible value, as
this is a new feature not available in v10.
See https://github.com/OCA/OpenUpgrade/blob/11.0/addons/calendar
/migrations/11.0.1.0/pre-migration.py
"""
_logger.info('Pre-creating column res_model in table calendar_event')
cr.execute("""SELECT column_name
FROM information_schema.columns
WHERE table_name='calendar_event' AND
column_name='res_model'""")
if not cr.fetchone():
cr.execute(
"""
ALTER TABLE calendar_event
ADD COLUMN res_model
character varying;
COMMENT ON COLUMN calendar_event.res_model
IS 'Document Model Name';
""")