correction

product.py

@@ -47,7 +47,9 @@ class Template(metaclass=PoolMeta):
     'Template'
     __name__ = 'product.template'
 
-    equipment = fields.Boolean('It is equipment')
+    equipment = fields.Boolean('It is equipment',
+                               states={'invisible': Eval('type', 'goods') != 'goods',
+                                       },depends=['type'])
     equipment_type = fields.Selection(_EQUIPMENT_TYPE, 'Equipment type',
                                       states={'required': Eval('equipment', False)},
                                       depends=['equipment']

subscription.py

@@ -57,11 +57,3 @@ class SubscriptionEquipment(ModelSQL):
     
     subscription = fields.Many2One('sale.subscription', 'Subscription', select=True)
     equipment = fields.Many2One('optical_equipment.equipment', 'Equipment', select=True)
-
-    @classmethod
-    def __setup__(cls):
-        super(SubscriptionEquipment, cls).__setup__()
-        cls._order = [
-            ('start_date', 'DESC'),
-            ('id', 'DESC'),
-            ]