roundup/actions.py

   1 #
   2 # Copyright (C) 2009 Stefan Seefeld
   3 # All rights reserved.
   4 # For license terms see the file COPYING.txt.
   5 #
   6
   7 from roundup.exceptions import *
   8 from roundup import hyperdb
   9 from roundup.i18n import _
  10
  11 class Action:
  12     def __init__(self, db, translator):
  13         self.db = db
  14         self.translator = translator
  15
  16     def handle(self, *args):
  17         """Action handler procedure"""
  18         raise NotImplementedError
  19
  20     def execute(self, *args):
  21         """Execute the action specified by this object."""
  22
  23         self.permission(*args)
  24         return self.handle(*args)
  25
  26
  27     def permission(self, *args):
  28         """Check whether the user has permission to execute this action.
  29
  30         If not, raise Unauthorised."""
  31
  32         pass
  33
  34
  35     def gettext(self, msgid):
  36         """Return the localized translation of msgid"""
  37         return self.translator.gettext(msgid)
  38
  39
  40     _ = gettext
  41
  42
  43 class Retire(Action):
  44
  45     def handle(self, designator):
  46
  47         classname, itemid = hyperdb.splitDesignator(designator)
  48
  49         # make sure we don't try to retire admin or anonymous
  50         if (classname == 'user' and
  51             self.db.user.get(itemid, 'username') in ('admin', 'anonymous')):
  52             raise ValueError(self._(
  53                 'You may not retire the admin or anonymous user'))
  54
  55         # do the retire
  56         self.db.getclass(classname).retire(itemid)
  57         self.db.commit()
  58
  59
  60     def permission(self, designator):
  61
  62         classname, itemid = hyperdb.splitDesignator(designator)
  63
  64         if not self.db.security.hasPermission('Edit', self.db.getuid(),
  65                                               classname=classname, itemid=itemid):
  66             raise Unauthorised(self._('You do not have permission to '
  67                                       'retire the %(classname)s class.')%classname)
  68