[IMP] website_sale: Add hook for custom search domain

In case we want to search on other fields than name or default_code,
or eventually on the descriptions, we need to reverse the domain
that is built using AND and OR operators from osv.expression which
is something we would prefer to avoid anytime.

By adding a hook to add custom domains, it allows to search on whatever
extra fields we would like to search on.

closes odoo/odoo#159340

X-original-commit: 54c0b97594fb1f489163e993afd0df12cf877501
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>

addons/website_sale/controllers/main.py

@@ -177,6 +177,9 @@ class WebsiteSale(payment_portal.PaymentPortal):
         order = post.get('order') or request.env['website'].get_current_website().shop_default_sort
         return 'is_published desc, %s, id desc' % order
 
+    def _add_search_subdomains_hook(self, search):
+        return []
+
     def _get_shop_domain(self, search, category, attrib_values, search_in_description=True):
         domains = [request.website.sale_product_domain()]
         if search:
@@ -188,6 +191,9 @@ class WebsiteSale(payment_portal.PaymentPortal):
                 if search_in_description:
                     subdomains.append([('website_description', 'ilike', srch)])
                     subdomains.append([('description_sale', 'ilike', srch)])
+                extra_subdomain = self._add_search_subdomains_hook(srch)
+                if extra_subdomain:
+                    subdomains.append(extra_subdomain)
                 domains.append(expression.OR(subdomains))
 
         if category: