add project_task_analytic_account_sync

project_task_analytic_account_sync/models/__init__.py

@@ -0,0 +1,2 @@
+from . import project_project
+from . import project_task

project_task_analytic_account_sync/models/project_project.py

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+# Copyright 2026 Criptomart
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import models
+
+
+class ProjectProject(models.Model):
+    _inherit = "project.project"
+
+    def write(self, vals):
+        res = super().write(vals)
+        if "analytic_account_id" in vals:
+            self.env["project.task"].with_context(active_test=False).search(
+                [("project_id", "in", self.ids)]
+            ).write({"analytic_account_id": vals["analytic_account_id"]})
+        return res
+
+    # No need to override _create_analytic_account: the core method already
+    # calls project.write({'analytic_account_id': ...}) which triggers our
+    # write() override above and propagates the account to all tasks.

project_task_analytic_account_sync/models/project_task.py

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+# Copyright 2026 Criptomart
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, models
+
+
+class ProjectTask(models.Model):
+    _inherit = "project.task"
+
+    @api.depends("project_id.analytic_account_id")
+    def _compute_analytic_account_id(self):
+        super()._compute_analytic_account_id()
+        for task in self:
+            expected = (
+                task.project_id.analytic_account_id if task.project_id else False
+            )
+            if task.analytic_account_id != expected:
+                task.analytic_account_id = expected
+
+    def write(self, vals):
+        if "project_id" in vals and "analytic_account_id" not in vals:
+            # Project changed: force the correct account from the new project
+            new_project = self.env["project.project"].browse(vals["project_id"])
+            vals["analytic_account_id"] = (
+                new_project.analytic_account_id.id if new_project else False
+            )
+        elif "analytic_account_id" in vals and "project_id" not in vals:
+            # Validate provided account against the current project
+            for task in self:
+                expected = (
+                    task.project_id.analytic_account_id.id if task.project_id else False
+                )
+                if vals["analytic_account_id"] != expected:
+                    vals["analytic_account_id"] = expected
+                    break
+        elif "project_id" in vals and "analytic_account_id" in vals:
+            # Both changed: force account from the new project
+            new_project = self.env["project.project"].browse(vals["project_id"])
+            vals["analytic_account_id"] = (
+                new_project.analytic_account_id.id if new_project else False
+            )
+        return super().write(vals)