add parent project in timesheet

cor_custom/models/analytic.py

@@ -16,7 +16,17 @@ class AccountAnalyticLine(models.Model):
     start_time = fields.Float(string='Start Time', digits=(16, 2))
     end_time = fields.Float(string='End Time', digits=(16, 2))
     unit_amount = fields.Float('Duration', default=0.0)
-    sub_project = fields.Many2one('project.project', string='Sub Project', related='project_id.sub_project', readonly=True)
+    parent_project = fields.Many2one('project.project', string='Parent Project')
+    #sub_project = fields.Many2one('project.project', string='Sub Project')
+
+    @api.onchange('project_id')
+    def _onchange_parent_project_id(self):
+        if self.project_id and self.project_id.sub_project:
+            self.parent_project = self.project_id.sub_project.id
+        else:
+            self.parent_project = False
+
+
 
     @api.onchange('employee_id')
     def _onchange_employee_id(self):

cor_custom/views/analytic_view.xml

@@ -51,7 +51,7 @@
                 <field name="end_time" widget="float_time"/>
             </xpath>
             <xpath expr="//field[@name='unit_amount']" position="after">
-                <field name="sub_project"/>
+                <field name="parent_project"/>
             </xpath>
         </field>
     </record>