[FIX] base_substate: track template on substate

base_substate/models/__init__.py

@@ -1,2 +1,3 @@
 from . import base_substate
 from . import base_substate_mixin
+from . import mail_thread

base_substate/models/base_substate_mixin.py

@@ -28,23 +28,6 @@ def check_substate_id_value(self):
                     }
                 )
 
-    def _track_template(self, tracking):
-        res = super()._track_template(tracking)
-        first_rec = self[0]
-        changes, tracking_value_ids = tracking[first_rec.id]
-        if "substate_id" in changes and first_rec.substate_id.mail_template_id:
-            res["substate_id"] = (
-                first_rec.substate_id.mail_template_id,
-                {
-                    "auto_delete_message": True,
-                    "subtype_id": self.env["ir.model.data"].xmlid_to_res_id(
-                        "mail.mt_note"
-                    ),
-                    "notif_layout": "mail.mail_notification_light",
-                },
-            )
-        return res
-
     def _get_default_substate_id(self, state_val=False):
         """Gives default substate_id"""
         search_domain = self._get_default_substate_domain(state_val)

base_substate/models/mail_thread.py

@@ -0,0 +1,25 @@
+# Copyright 2023 Ecosoft Co., Ltd. (http://ecosoft.co.th)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import models
+
+
+class MailThread(models.AbstractModel):
+    _inherit = "mail.thread"
+
+    def _track_template(self, changes):
+        res = super()._track_template(changes)
+        first_rec = self[0]
+        if "substate_id" in changes and first_rec.substate_id.mail_template_id:
+            res["substate_id"] = (
+                first_rec.substate_id.mail_template_id,
+                {
+                    "composition_mode": "comment",
+                    "auto_delete_message": True,
+                    "subtype_id": self.env["ir.model.data"]._xmlid_to_res_id(
+                        "mail.mt_note"
+                    ),
+                    "email_layout_xmlid": "mail.mail_notification_light",
+                },
+            )
+        return res