mrp_average_cost: Fix decimal precision

product_usability: add link to show history of standard price

product_usability/product.py

@@ -16,6 +16,17 @@ class ProductTemplate(models.Model):
     purchase_ok = fields.Boolean(track_visibility='onchange')
     active = fields.Boolean(track_visibility='onchange')
 
+    def show_product_price_history(self):
+        self.ensure_one()
+        products = self.env['product.product'].search(
+            [('product_tmpl_id', '=', self._context['active_id'])])
+        action = self.env['ir.actions.act_window'].for_xml_id(
+            'product_usability', 'product_price_history_action')
+        action.update({
+            'domain': "[('id', 'in', %s)]" % products.ids,
+        })
+        return action
+
 
 class ProductProduct(models.Model):
     _inherit = 'product.product'
@@ -38,9 +49,26 @@ class ProductProduct(models.Model):
         'unique(default_code)',
         'This internal reference already exists!')]
 
+    def show_product_price_history(self):
+        self.ensure_one()
+        action = self.env['ir.actions.act_window'].for_xml_id(
+            'product_usability', 'product_price_history_action')
+        action.update({
+            'domain': "[('product_id', '=', %d)]" % self.ids[0],
+        })
+        return action
+
 
 class ProductSupplierinfo(models.Model):
     _inherit = 'product.supplierinfo'
 
     name = fields.Many2one(
         domain=[('supplier', '=', True), ('parent_id', '=', False)])
+
+
+class ProductPriceHistory(models.Model):
+    _inherit = 'product.price.history'
+
+    company_currency_id = fields.Many2one(
+        related='company_id.currency_id', readonly=True,
+        string='Company Currency')