Minor fix

sale.py

@@ -1,7 +1,7 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 from __future__ import unicode_literals
-from datetime import date
+from datetime import date, datetime
 from trytond.pool import PoolMeta, Pool
 from trytond.model import fields
 from trytond.pyson import Eval
@@ -24,18 +24,22 @@ class Sale(metaclass=PoolMeta):
     consumer = fields.Many2One('party.consumer', 'Consumer')
     table_assigned = fields.Many2One('sale.shop.table', 'Table Assigned',
         domain=[
-            ('shop', '=', Eval('shop'))
+            ('shop', '=', Eval('shop')),
         ])
     productions = fields.Function(fields.One2Many('production', None, 'Productions'), 'get_productions')
     delivery_time = fields.Numeric('Delivery Time (Min)', help="In Minutes")
-    # kind = fields.Selection([
-    #     ('', ''),
-    #     ('delivery', 'Delivery'),
-    #     ('take_away', 'Take Away'),
-    #     ('to_table', 'To Table'),
-    #     ], 'Kind Order')
-    # kind_string = kind.translated('kind')
-    shipping_time = fields.Time('Shipping Time')
+    order_status = fields.Selection([
+        ('', ''),
+        ('draft', 'Draft'),
+        ('commanded', 'Commanded'),
+        ('in_preparation', 'In Preparation'),
+        ('dispatched', 'Dispatched'),
+        ('delivered', 'Delivered'),
+        ('rejected', 'Rejected'),
+        ('cancelled', 'Cancelled'),
+        ], 'Order Status')
+    order_status_string = order_status.translated('order_status')
+    shipping_time = fields.DateTime('Shipping Time')
     waiting_time = fields.Function(fields.Integer('Shipping Time',
         help="In Minutes"), 'get_waiting_time')
 
@@ -48,9 +52,14 @@ class Sale(metaclass=PoolMeta):
             'message_error': 'Error: %s',
         },)
 
+    @staticmethod
+    def default_order_status():
+        return 'draft'
+
     def get_waiting_time(self, name=None):
+        now = datetime.now()
         if self.state in ('draft', 'quotation', 'confirmed', 'processing'):
-            delta = int((self.write_date - self.create_date).seconds / 60)
+            delta = int((now - self.create_date).seconds / 60)
             return delta
 
     @classmethod

view/sale_pos_form.xml

@@ -9,6 +9,8 @@ copyright notices and license terms. -->
         <field name="kind"/>
         <label name="consumer"/>
         <field name="consumer"/>
+        <label name="order_status"/>
+        <field name="order_status"/>
         <label name="table_assigned"/>
         <field name="table_assigned" widget="selection"/>
         <label name="delivery_time"/>