chore

device.py

@@ -19,7 +19,7 @@ class SaleDevice(ModelSQL, ModelView):
     journals = fields.Many2Many('sale.device.account.statement.journal',
         'device', 'journal', 'Journals', depends=['company'],
         domain=[
-            ('company', '=', Eval('company')),
+            ('company', '=', Eval('company', -1)),
             ]
         )
     journal = fields.Many2One('account.statement.journal', "Default Journal",

sale.py

@@ -30,7 +30,7 @@ class Sale(metaclass=PoolMeta):
                                       'get_residual_amount',
                                       searcher='search_residual_amount')
     sale_device = fields.Many2One('sale.device', 'Sale Device',
-                                  domain=[('shop', '=', Eval('shop'))],
+                                  domain=[('shop', '=', Eval('shop', -1))],
                                   depends=['shop'], states={
                                       'readonly': Eval('state') != 'draft',
                                   })
@@ -40,8 +40,11 @@ class Sale(metaclass=PoolMeta):
         super(Sale, cls).__setup__()
         cls._buttons.update({
             'wizard_sale_payment': {
-                'invisible': Eval('state') == 'done',
-                'readonly': Not(Bool(Eval('lines'))),
+                'invisible': (Eval('state') == 'done') | (Eval(
+                    'residual_amount', 0) == 0),
+                'readonly': Not(Bool(Eval('lines'))) | (Eval(
+                    'residual_amount', 0) == 0),
+                'depends': ['state', 'residual_amount']
             },
             'wizard_change_payment_method': {},
                 })
@@ -225,7 +228,7 @@ class ChangePaymentMethodForm(ModelView):
                                  'Allowed Statement', readonly=True)
     payment = fields.Many2One(
         'account.statement.line', "Payment", required=True,
-        domain=[('sale', '=', Eval('sale'))])
+        domain=[('sale', '=', Eval('sale', -1))])
 
 
 class ChangePaymentMethod(Wizard):

sale.xml

@@ -13,7 +13,7 @@ copyright notices and license terms. -->
         <record model="ir.action.act_window" id="act_payment_form">
             <field name="name">Payments</field>
             <field name="res_model">account.statement.line</field>
-            <field name="domain" eval="[If(Eval('active_ids', []) == [Eval('active_id')], ('sale', '=', Eval('active_id')), ('sale', 'in', Eval('active_ids')))]" pyson="1"/>
+            <field name="domain" eval="[If(Eval('active_ids', []) == [Eval('active_id'), -1], ('sale', '=', Eval('active_id', -1)), ('sale', 'in', Eval('active_ids', [])))]" pyson="1"/>
         </record>
         <record model="ir.action.keyword" id="act_open_payment_keyword1">
             <field name="keyword">form_relate</field>

user.py

@@ -12,14 +12,15 @@ __all__ = ['User']
 
 class User(metaclass=PoolMeta):
     __name__ = "res.user"
-    sale_device = fields.Many2One('sale.device', 'Sale Device',
-            domain=[('shop', '=', Eval('shop'))],
-            depends=['shop']
-    )
+    sale_device = fields.Many2One(
+        'sale.device', 'Sale Device', domain=[
+            ('shop', '=', Eval('shop', -1))
+        ], depends=['shop'])
 
     @classmethod
     def __setup__(cls):
         super(User, cls).__setup__()
+        cls._context_fields.insert(0, 'sale_device')
         if 'sale_device' not in cls._preferences_fields:
             cls._preferences_fields.extend([
                     'sale_device',