[IMP] - set date_invoice as default group by for forecast pivot view

contract_forecast/models/contract.py

@@ -11,11 +11,14 @@ class AccountAnalyticAccount(models.Model):
     @api.multi
     def action_show_contract_forecast(self):
         self.ensure_one()
+        context = {'search_default_groupby_date_invoice': True}
+        context.update(self.env.context)
+
         return {
             "type": "ir.actions.act_window",
             "name": _("Contract Forecast"),
             "res_model": "contract.line.forecast.period",
             "domain": [("contract_id", "=", self.id)],
             "view_mode": "pivot,tree",
-            "context": self.env.context,
+            "context": context,
         }

contract_forecast/views/contract_line_forecast_period.xml

@@ -19,7 +19,7 @@
                     <filter string="Date End" name="groupby_date_end"
                             context="{'group_by':'date_end'}"/>
                     <filter string="Date Invoice" name="groupby_date_invoice"
-                            context="{'group_by':'date_invoice'}"/>
+                            context="{'group_by':'date_invoice:day'}"/>
                 </group>
             </search>
         </field>
@@ -48,8 +48,8 @@
         <field name="model">contract.line.forecast.period</field>
         <field name="arch" type="xml">
             <pivot string="Contract Forecast">
-                <field name="product_id" type="row"/>
-                <field name="date_invoice" type="col"/>
+                <field name="product_id" type="col"/>
+                <field name="date_invoice" type="row"/>
                 <field name="price_subtotal" type="measure"/>
             </pivot>
         </field>