Add lot_hist readonly

modules/lot/lot.py

@@ -24,8 +24,14 @@ class Lot(ModelSQL, ModelView):
     
     lot_name = fields.Char("Lot")
     number = fields.Char("Number", readonly=True)
-    lot_qt = fields.Float("Quantity",required=False)
-    lot_unit = fields.Many2One('product.uom', "Unit",required=False)
+    lot_qt = fields.Float("Quantity", required=False,
+        states={
+            'readonly': Eval('lot_type') == 'virtual',
+            })
+    lot_unit = fields.Many2One('product.uom', "Unit", required=False,
+        states={
+            'readonly': Eval('lot_type') == 'virtual',
+            })
     lot_product = fields.Many2One('product.product', "Product")
     lot_type = fields.Selection([
         ('virtual', 'Open'),