Fix: Add field total_order

sale_order.py

@@ -13,6 +13,9 @@ class SaleOrder(ModelView, ModelSQL):
     "Sale Order"
     __name__ = 'sale.order'
 
+    company = fields.Many2One(
+        'company.company', "Company", required=True
+    )
     party = fields.Many2One(
         'party.party', "Party", required=True
     )
@@ -23,29 +26,63 @@ class SaleOrder(ModelView, ModelSQL):
     lines = fields.One2Many(
         'order.line', 'order', 'Lines'
     )
-    date = fields.Date("Date", required=True)
+    date = fields.Date("Date", required=True
+    )
+    currency = fields.Many2One(
+        'currency.currency', 'Currency', required=True
+    )
+    total_order = fields.Function(
+        Monetary("Total", currency='currency', digits='currency'),
+        'on_change_with_total_order'
+    )
+
+    @staticmethod
+    def default_company():
+        return Transaction().context.get('company')
 
     @staticmethod
     def default_date():
         return date.today()
 
+    @fields.depends('lines')
+    def on_change_with_total_order(self, name=None):
+        total = Decimal('0.0')
+        if self.lines:
+            for line in self.lines:
+                if line.total_amount:
+                    total += Decimal(line.total_amount)
+        return total
+
+    @classmethod
+    def default_currency(cls, **pattern):
+        pool = Pool()
+        Company = pool.get('company.company')
+        company = pattern.get('company')
+        if not company:
+            company = cls.default_company()
+        if company:
+            return Company(company).currency.id
+
 
 class OrderLine(ModelView, ModelSQL):
     "Order Line"
     __name__ = 'order.line'
 
     company = fields.Many2One(
-        'company.company', "Company", required=True)
+        'company.company', "Company", required=True
+    )
     order = fields.Many2One(
         'sale.order', "Sale"
     )
     currency = fields.Many2One(
-        'currency.currency', 'Currency', required=True)
+        'currency.currency', 'Currency', required=True
+    )
     product = fields.Many2One(
         'product.product', 'Product', required=True
     )
     unit = fields.Many2One(
-        'product.uom', 'Unit')
+        'product.uom', 'Unit'
+    )
     product_uom_category = fields.Function(
         fields.Many2One('product.uom.category', 'Product UOM Category'),
         'on_change_with_product_uom_category'

tests/scenario_sale_order.rst

@@ -41,5 +41,8 @@ Create order::
   >>> line1.quantity = 4.0
   >>> line1.unitprice = Decimal('8400') 
   >>> line1.total_amount = Decimal('33600')
+  >>> order.total_order = Decimal('33600')
   >>> order.save()
+
+