check listbox is not none or empty before retrieving object to install

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@9992 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/bootstrap/business_template_installation_workflow.xml

@@ -89,10 +89,9 @@
             <value>
               <tuple>
                 <list>
-                  <string>nexedi</string>
                   <string>acl_users</string>
                 </list>
-                <string>ac</string>
+                <string>aurel</string>
               </tuple>
             </value>
         </item>
@@ -610,7 +609,7 @@
       <dictionary>
         <item>
             <key> <string>Python_magic</string> </key>
-            <value> <string encoding="base64">O/INCg==</string> </value>
+            <value> <string encoding="base64">bfINCg==</string> </value>
         </item>
         <item>
             <key> <string>Script_magic</string> </key>
@@ -671,12 +670,15 @@
         </item>
         <item>
             <key> <string>_body</string> </key>
-            <value> <string>business_template = state_change.object\n
+            <value> <string encoding="cdata"><![CDATA[
+
+business_template = state_change.object\n
 listbox = state_change.kwargs.get(\'listbox\')\n
 workflow_action = state_change.kwargs.get(\'workflow_action\')\n
 \n
 object_to_update = {}\n
-for item in listbox:\n
+if listbox is not None and len(listbox) > 0:\n
+  for item in listbox:\n
     if item[\'choice\']:\n
       object_to_update[item[\'listbox_key\']] = item[\'choice\']\n
 \n
@@ -684,29 +686,29 @@ if workflow_action == \'install_action\':\n
   business_template.install(force=0, object_to_update=object_to_update)\n
 elif workflow_action == \'reinstall_action\':\n
   business_template.reinstall(force=0, object_to_update=object_to_update)\n
-</string> </value>
+
+
+]]></string> </value>
         </item>
         <item>
             <key> <string>_code</string> </key>
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-IChQeXRob24pcwgAAAA8bW9kdWxlPgEAAABzAAAAAA==</string> </value>
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+AAAAAA==</string> </value>
         </item>
         <item>
             <key> <string>_filepath</string> </key>
@@ -746,6 +748,8 @@ IChQeXRob24pcwgAAAA8bW9kdWxlPgEAAABzAAAAAA==</string> </value>
                             <string>listbox</string>
                             <string>workflow_action</string>
                             <string>object_to_update</string>
+                            <string>None</string>
+                            <string>len</string>
                             <string>_getiter_</string>
                             <string>item</string>
                             <string>_getitem_</string>