erp5_commerce: Allow define dates when decide for the price

Dates are necessary for calculate Price using predicate.

bt5/erp5_commerce/SkinTemplateItem/portal_skins/erp5_commerce/Resource_getPriceCalculationDefaultContext.xml

@@ -83,6 +83,13 @@ if len(context.getVariationRangeCategoryList()):\n
       variation_category = request.get(variation_base_category, default_variation)\n
       variation_dict[variation_base_category] = variation_category\n
 \n
+if date is None:\n
+  variation_dict["start_date"] = DateTime()\n
+  variation_dict["stop_date"] = DateTime()+0.00001\n
+else:\n
+  variation_dict["start_date"] = date\n
+  variation_dict["stop_date"] = date+0.00001\n
+\n
 if web_site_value is not None:\n
   price_currency_value = web_site_value.WebSite_getShoppingCartDefaultCurrency()\n
 else:\n
@@ -95,7 +102,7 @@ return movement\n
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>**kw</string> </value>
+            <value> <string>date=None, **kw</string> </value>
         </item>
         <item>
             <key> <string>_proxy_roles</string> </key>

bt5/erp5_commerce/bt/revision

-324
+325
\ No newline at end of file