Remove hardcoded value

Use request (populated by site template) or current context to determine the web site. Also cleaned some comments and docstrings.

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

@@ -55,12 +55,20 @@
   needed to provide a default price for a given resource\n
 \n
   TODO:\n
-  - support input parameters (**kw) to specialize\n
-    price calculation\n
+  - add support to input parameters (**kw) so that it\n
+    is possible specialize price calculation\n
 """\n
 from Products.ERP5Type.Document import newTempMovement\n
 \n
-web_site_value = context.getPortalObject().web_site_module.weinparis # hack cause no way to know default site....\n
+# Try to find out the current web site\n
+web_site_value = context.REQUEST.get(\'current_web_site\', None)\n
+if web_site_value is None:\n
+  web_site_value = context.getWebSiteValue()  \n
+  if web_site_value is None:\n
+    raise ValueError("Could not determine the current web site to compute default currency of price")\n
+\n
+# If this resource is variated, initialize the default\n
+# variation context\n
 variation_dict = {}\n
 if len(context.getVariationRangeCategoryList()):\n
   request = context.REQUEST\n
@@ -75,6 +83,7 @@ if len(context.getVariationRangeCategoryList()):\n
       default_variation = default_variation[0]\n
       variation_category = request.get(variation_base_category, default_variation)\n
       variation_dict[variation_base_category] = variation_category\n
+\n
 movement = newTempMovement(context, "temp_pricing_movement", resource_value=context,\n
                            price_currency_value=web_site_value.WebSite_getShoppingCartDefaultCurrency(),\n
                            **variation_dict)\n