hooks.py

# License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl).

from odoo import SUPERUSER_ID
from odoo.api import Environment

new_field_code_added = False


def create_code_equal_to_id(cr):
    cr.execute(
        "SELECT column_name FROM information_schema.columns "
        "WHERE table_name = 'crm_claim' AND column_name = 'code'"
    )
    if not cr.fetchone():
        cr.execute("ALTER TABLE crm_claim ADD COLUMN code character varying;")
        cr.execute("UPDATE crm_claim SET code = id;")
        global new_field_code_added
        new_field_code_added = True


def assign_old_sequences(cr, registry):
    if not new_field_code_added:
        # the field was already existing before the installation of the addon
        return

    env = Environment(cr, SUPERUSER_ID, {})

    sequence_model = env["ir.sequence"]

    claims = env["crm.claim"].search([], order="id")
    for claim in claims:
        claim.code = sequence_model.next_by_code("crm.claim")