[refactoring] split IFullTextIndexSerializable.serialize method to ease overriding

cubicweb_elasticsearch/entities.py

@@ -109,6 +109,12 @@
         attrs.extend(self.custom_indexable_attributes)
         return attrs
 
+    def process_attributes(self):
+        data = {}
+        for attr in self.fulltext_indexable_attributes:
+            data[attr] = getattr(self.entity, attr)
+        return data
+
     def serialize(self, complete=True):
         entity = self.entity
         if complete:
@@ -118,6 +124,4 @@
             'eid': entity.eid,
             'cwuri': entity.cwuri,
         }
-        for attr in self.fulltext_indexable_attributes:
-            data[attr] = getattr(entity, attr)
         # TODO take a look at what's in entity.cw_relation_cache
@@ -123,4 +127,5 @@
         # TODO take a look at what's in entity.cw_relation_cache
+        data.update(self.process_attributes())
         return data