From 0b5c50c1007070c73bfbea58b6ef7bf5755085f9 Mon Sep 17 00:00:00 2001
From: Helmut Merz <helmutm@cy55.de>
Date: Sun, 17 Jul 2016 09:58:05 +0200
Subject: [PATCH] avoid loading of all subchildren in check for nested listing

---
 browser/concept_macros.pt | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/browser/concept_macros.pt b/browser/concept_macros.pt
index 7bbea5a..0bad111 100644
--- a/browser/concept_macros.pt
+++ b/browser/concept_macros.pt
@@ -183,14 +183,17 @@
                          tal:attributes="value related/uidToken" />
                 </td>
               </tr>
-              <tr tal:define="children python:list(related.unique(related.children()));
-                              resources python:list(related.resources())"
-                  tal:condition="python:list_nested and (children or resources)">
-                <td tal:condition="item/showCheckboxes|nothing" />
-                <td colspan="5">
-                  <metal:list use-macro="item/template/macros/list_nested" />
-                </td>
-              </tr>
+              <tal:nested condition="list_nested">
+                <tr tal:define="children python:
+                        list(related.unique(related.children()));
+                                resources python:list(related.resources())"
+                    tal:condition="python:children or resources">
+                  <td tal:condition="item/showCheckboxes|nothing" />
+                  <td colspan="5">
+                    <metal:list use-macro="item/template/macros/list_nested" />
+                  </td>
+                </tr>
+              </tal:nested>
             </tal:item>
           </tal:items>
           </tbody>