Odoo-18.0-20251222/base_time_window/readme/USAGE.md

Example implementation for the mixin can be found in module test_base_time_window.

As a time window will always be linked to a related model thourgh a M2o relation, when defining the new model inheriting the mixin, one should pay attention to the following points in order to have the overlapping check work properly:

• Define class property `_overlap_check_field`: This must state the M2o field to use for the to check of overlapping time window records linked to a specific record of the related model.
• Add the M2o field to the related model in the `api.constrains`:

For example:

class PartnerTimeWindow(models.Model):
    _name = 'partner.time.window'
    _inherit = 'time.window.mixin'

    partner_id = fields.Many2one(
        res.partner', required=True, index=True, ondelete='cascade'
    )

    _overlap_check_field = 'partner_id'

    @api.constrains('partner_id')
    def check_window_no_overlaps(self):
        return super().check_window_no_overlaps()