Return the default in case of a missing predecessor.

bt5/erp5_wendelin/DocumentTemplateItem/portal_components/document.erp5.DataArrayViewLine.py

@@ -51,7 +51,11 @@ class DataArrayViewLine(DataArray):
       createExpressionContext(None, portal=getindex),
       "python: portal[%s]" %self.getIndexExpression()
     )
-    zbigarray = self.getPredecessorValue().getArray()
+    # if missing predecessor return the default
+    predecessor_value = self.getPredecessorValue()
+    if predecessor_value is None:
+      return default
+    zbigarray = predecessor_value.getArray()
     try:
       array_view = zbigarray[index]
     except TypeError:

bt5/erp5_wendelin/DocumentTemplateItem/portal_components/document.erp5.DataArrayViewLine.xml

@@ -6,12 +6,6 @@
     </pickle>
     <pickle>
       <dictionary>
-        <item>
-            <key> <string>_recorded_property_dict</string> </key>
-            <value>
-              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
-            </value>
-        </item>
         <item>
             <key> <string>default_reference</string> </key>
             <value> <string>DataArrayViewLine</string> </value>
@@ -55,28 +49,13 @@
         <item>
             <key> <string>workflow_history</string> </key>
             <value>
-              <persistent> <string encoding="base64">AAAAAAAAAAM=</string> </persistent>
+              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
             </value>
         </item>
       </dictionary>
     </pickle>
   </record>
   <record id="2" aka="AAAAAAAAAAI=">
-    <pickle>
-      <global name="PersistentMapping" module="Persistence.mapping"/>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>data</string> </key>
-            <value>
-              <dictionary/>
-            </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
-  <record id="3" aka="AAAAAAAAAAM=">
     <pickle>
       <global name="PersistentMapping" module="Persistence.mapping"/>
     </pickle>
@@ -89,7 +68,7 @@
                 <item>
                     <key> <string>component_validation_workflow</string> </key>
                     <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAQ=</string> </persistent>
+                      <persistent> <string encoding="base64">AAAAAAAAAAM=</string> </persistent>
                     </value>
                 </item>
               </dictionary>
@@ -98,13 +77,15 @@
       </dictionary>
     </pickle>
   </record>
-  <record id="4" aka="AAAAAAAAAAQ=">
+  <record id="3" aka="AAAAAAAAAAM=">
     <pickle>
-      <global name="WorkflowHistoryList" module="Products.ERP5Type.patches.WorkflowTool"/>
+      <global name="WorkflowHistoryList" module="Products.ERP5Type.Workflow"/>
     </pickle>
     <pickle>
-      <tuple>
-        <none/>
+      <dictionary>
+        <item>
+            <key> <string>_log</string> </key>
+            <value>
               <list>
                 <dictionary>
                   <item>
@@ -117,7 +98,9 @@
                   </item>
                 </dictionary>
               </list>
-      </tuple>
+            </value>
+        </item>
+      </dictionary>
     </pickle>
   </record>
 </ZopeData>