[IMP] website_sale: create hook for website_sale.product rendering values

closes odoo/odoo#102956

X-original-commit: 7ccb3380becfe7ff5a36f93288935ab3882c4542
Signed-off-by: William Braeckman (wbr) <wbr@odoo.com>

addons/website_sale/controllers/main.py

@@ -298,6 +298,10 @@ class WebsiteSale(http.Controller):
             'order': order,
         }
 
+    def _get_additional_shop_values(self, values):
+        """ Hook to update values used for rendering website_sale.products template """
+        return {}
+
     @http.route([
         '/shop',
         '/shop/page/<int:page>',
@@ -475,6 +479,7 @@ class WebsiteSale(http.Controller):
             values['available_max_price'] = tools.float_round(available_max_price, 2)
         if category:
             values['main_object'] = category
+        values.update(self._get_additional_shop_values(values))
         return request.render("website_sale.products", values)
 
     @http.route(['/shop/<model("product.template"):product>'], type='http', auth="public", website=True, sitemap=True)