revert r20322, movement.getExplanationValue raises an AttributeError in too many cases.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@20476 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Movement_getPriceCalculationOperandDict.xml

@@ -99,9 +99,13 @@ def resourceSalePriceSortMethod(a, b):\n
      else:\n
        return sourceSortMethod(a, b)\n
 \n
-if hasattr(context, \'getExplanationValue\'):\n
+try:\n
   explanation = context.getExplanationValue()\n
-  if explanation is not None:\n
+except AttributeError:\n
+  # Sometime, movements doesn\'t have an explanation.\n
+  explanation = None\n
+\n
+if explanation is not None:\n
   explanation_type = explanation.getPortalType()\n
   # XXX FIXME: Hardcoded values\n
   if "Purchase" in explanation_type:\n
@@ -168,10 +172,10 @@ else:\n
                             <string>destinationSortMethod</string>
                             <string>resourcePurchasePriceSortMethod</string>
                             <string>resourceSalePriceSortMethod</string>
-                            <string>hasattr</string>
-                            <string>context</string>
                             <string>_getattr_</string>
+                            <string>context</string>
                             <string>explanation</string>
+                            <string>AttributeError</string>
                             <string>None</string>
                             <string>explanation_type</string>
                             <string>_write_</string>

product/ERP5/bootstrap/erp5_core/bt/revision

-787
+788
\ No newline at end of file