[IMP] hr_timesheet: label on unit_amount

We want the UoM name (encoding timesheet) to be
displayed in the label of unit_amount field.
To do so, the field_view_get is extended to change
the label on the field decorated with the `timesheet_uom`
widget, in the view arch
If a string attribute is set on the field, it is prior;
so we only add label if no one is set to avoid breaking
view inheritance.

Task #39079

addons/hr_timesheet/models/hr_timesheet.py

@@ -77,6 +77,24 @@ class AccountAnalyticLine(models.Model):
         self.filtered(lambda t: t.project_id)._timesheet_postprocess(values)
         return result
 
+    @api.model
+    def fields_view_get(self, view_id=None, view_type='form', toolbar=False, submenu=False):
+        """ Set the correct label for `unit_amount`, depending on company UoM """
+        result = super(AccountAnalyticLine, self).fields_view_get(view_id=view_id, view_type=view_type, toolbar=toolbar, submenu=submenu)
+        result['arch'] = self._apply_timesheet_label(result['arch'])
+        return result
+
+    @api.model
+    def _apply_timesheet_label(self, view_arch):
+        doc = etree.XML(view_arch)
+        encoding_uom = self.env.user.company_id.timesheet_encode_uom_id
+        # Here, we select only the unit_amount field having no string set to give priority to
+        # custom inheretied view stored in database. Even if normally, no xpath can be done on
+        # 'string' attribute.
+        for node in doc.xpath("//field[@name='unit_amount'][@widget='timesheet_uom'][not(@string)]"):
+            node.set('string', _('Duration (%s)') % (encoding_uom.name))
+        return etree.tostring(doc, encoding='unicode')
+
     # ----------------------------------------------------
     # Business Methods
     # ----------------------------------------------------

addons/hr_timesheet/models/project.py

@@ -151,3 +151,10 @@ class Task(models.Model):
                 'company_id': account_id.company_id.id,
             })
         return result
+
+    @api.model
+    def fields_view_get(self, view_id=None, view_type='form', toolbar=False, submenu=False):
+        """ Set the correct label for `unit_amount`, depending on company UoM """
+        result = super(Task, self).fields_view_get(view_id=view_id, view_type=view_type, toolbar=toolbar, submenu=submenu)
+        result['arch'] = self.env['account.analytic.line']._apply_timesheet_label(result['arch'])
+        return result