ensure create_index is called on get_connection

entities.py

@@ -61,6 +61,7 @@
     }
 
     def get_connection(self):
+        self.create_index()
         return es.get_connection(self._cw.vreg.config)
 
     def create_index(self, index_name=None, custom_settings=None):
@@ -71,7 +72,7 @@
             settings = {}
             deep_update(settings, self.settings)
             deep_update(settings, custom_settings)
-        es.create_index(self.get_connection(), index_name, settings)
+        es.create_index(es.get_connection(self._cw.vreg.config), index_name, settings)
 
 
 class IFullTextIndexSerializable(view.EntityAdapter):