[json_style] Add yet-another attribut resolution method to mode=search results

bt5/erp5_hal_json_style/SkinTemplateItem/portal_skins/erp5_hal_json_style/ERP5Document_getHateoas.py

@@ -8,6 +8,7 @@ import time
 from email.Utils import formatdate
 import re
 from zExceptions import Unauthorized
+from Products.ERP5Type.Utils import UpperCase
 
 if REQUEST is None:
   REQUEST = context.REQUEST
@@ -1244,14 +1245,27 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
 
         else:
           contents_value = search_property_getter(search_result, select)
-
+          if contents_value is None:
+            accessor_name = 'get' + UpperCase(select)
+            # check for attribute getter in the whole chain of acquisition
+            # why? because it does not work otherways (it's most probably wrong)
+            try:
+              # this was copied out from ListsBoxHTMLRenderer
+              if hasattr(search_result, accessor_name):
+                contents_value = getattr(search_result, accessor_name)()
+            except (AttributeError, KeyError, Unauthorized):
+              context.log("Could not evaluate {} nor {} on {}".format(
+                select, accessor_name, search_result))
+
+          context.log("search_property_getter({!s}, {}) -> {!s}".format(
+            search_result, select, contents_value))
           if contents_value is not None:
             if same_type(contents_value, DateTime()):
               # Serialize DateTime
               contents_value = contents_value.rfc822()
             elif isinstance(contents_value, datetime.date):
               contents_value = formatdate(time.mktime(contents_value.timetuple()))
-            elif getattr(contents_value, 'translate', None) is not None:
+            elif hasattr(contents_value, 'translate'):
               contents_value = "%s" % contents_value
 
           contents_item[select] = contents_value