Set only once date when computing purchase and sale prices

modules/purchase/product.py

@@ -164,7 +164,6 @@ class Product(metaclass=PoolMeta):
         ProductSupplier = pool.get('purchase.product_supplier')
         ProductSupplierPrice = pool.get('purchase.product_supplier.price')
 
-        today = Date.today()
         context = Transaction().context
         prices = {}
 
@@ -179,6 +178,7 @@ class Product(metaclass=PoolMeta):
             currency = Currency(context['currency'])
         elif context.get('company'):
             currency = Company(context['company']).currency
+        date = context.get('purchase_date') or Date.today()
 
         for product in products:
             unit_price = product._get_purchase_unit_price(quantity=quantity)
@@ -205,7 +205,6 @@ class Product(metaclass=PoolMeta):
                 unit_price = Uom.compute_price(
                     default_uom, unit_price, product_uom)
             if currency and default_currency and unit_price is not None:
-                date = context.get('purchase_date') or today
                 with Transaction().set_context(date=date):
                     unit_price = Currency.compute(
                         default_currency, unit_price, currency, round=False)

modules/sale/product.py

@@ -150,7 +150,6 @@ class Product(metaclass=PoolMeta):
         Currency = pool.get('currency.currency')
         Date = pool.get('ir.date')
 
-        today = Date.today()
         context = Transaction().context
         prices = {}
 
@@ -166,6 +165,7 @@ class Product(metaclass=PoolMeta):
         company = None
         if context.get('company'):
             company = Company(context['company'])
+        date = context.get('sale_date') or Date.today()
 
         for product in products:
             unit_price = product._get_sale_unit_price(quantity=quantity)
@@ -178,7 +178,6 @@ class Product(metaclass=PoolMeta):
                         product.default_uom, unit_price, product.sale_uom)
             if currency and company and unit_price is not None:
                 if company.currency != currency:
-                    date = Transaction().context.get('sale_date') or today
                     with Transaction().set_context(date=date):
                         unit_price = Currency.compute(
                             company.currency, unit_price,