[views] use score_entity instead of rql_condition

views.py

@@ -16,7 +16,7 @@
 
 from cubicweb.selectors import (one_line_rset, but_etype, implements,
                                 has_permission, relation_possible, yes,
-                                match_kwargs, rql_condition)
+                                match_kwargs, score_entity)
 from cubicweb.view import EntityView
 from cubicweb.common.uilib import rql_for_eid, cut, safe_cut
 from cubicweb.common.mixins import TreeViewMixIn
@@ -318,8 +318,8 @@
 
 class DelteCommentAction(Action):
     id = 'delete_comment'
-    __select__ = implements('Comment') & has_permission('delete') \
-                 & rql_condition('NOT EXISTS(C comments X)')
+    __select__ = implements('Comment') & \
+                 score_entity(lambda x: not x.reverse_comments and x.has_perm('delete'))
 
     title = _('delete comment')
     category = 'hidden'