patches/PythonScript.py: patch showAsXML related methods.

product/ERP5Type/patches/PythonScript.py

@@ -50,3 +50,12 @@ PythonScript.manage = manage_editForm
 PythonScript.manage_main = manage_editForm
 PythonScript.manage_editDocument = manage_editForm
 PythonScript.manage_editForm = manage_editForm
+
+# following methods are design for showAsXML function:
+def pyscript_getBody(self):
+  return self._body
+def pyscript_getParams(self):
+  return self._params
+
+PythonScript.getBody = pyscript_getBody
+PythonScript.getParams = pyscript_getParams