[NEW] event_track_copy

event_track_copy/models/__init__.py

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+from . import event_track
+from . import event_event

event_track_copy/models/event_event.py

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+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+from odoo import fields, models, api, Command
+import logging
+_logger = logging.getLogger(__name__)
+
+class EventEvent(models.Model):
+    _inherit = "event.event"
+    
+    track_ids = fields.One2many(copy=True) #enable copy for event tracks

event_track_copy/models/event_track.py

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+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+from odoo import fields, models, api, Command
+from datetime import timedelta
+import logging
+
+_logger = logging.getLogger(__name__)
+
+
+class EventTrack(models.Model):
+    _inherit = "event.track"
+
+    event_id = fields.Many2one(ondelete='cascade') #delete event tracks when delete event