better sessions2trash.py, thanks Jim

VERSION

@@ -1 +1 @@
-Version 2.2.1 (2012-10-24 16:04:05) stable
+Version 2.2.1 (2012-10-25 08:17:22) stable

scripts/sessions2trash.py

@@ -23,6 +23,7 @@ Typical usage:
 """
 
 from __future__ import with_statement
+from gluon import current
 from gluon.storage import Storage
 from optparse import OptionParser
 import cPickle
@@ -93,10 +94,7 @@ class SessionSetDb(SessionSet):
     def get(self):
         """Return list of SessionDb instances for existing sessions."""
         sessions = []
-        tablename = 'web2py_session'
-        from gluon import current
-        (record_id_name, table, record_id, unique_key) = \
-            current.response._dbtable_and_field
+        table = current.response.session_db_table
         for row in table._db(table.id > 0).select():
             sessions.append(SessionDb(row))
         return sessions
@@ -121,9 +119,7 @@ class SessionDb(object):
         self.row = row
 
     def delete(self):
-        from gluon import current
-        (record_id_name, table, record_id, unique_key) = \
-            current.response._dbtable_and_field
+        table = current.response.session_db_table
         self.row.delete_record()
         table._db.commit()