#!/usr/bin/env python # -*- coding: utf-8 -*- """ openslides.system.models ~~~~~~~~~~~~~~~~~~~~~~~~ Models for the system app. :copyright: 2011 by the OpenSlides team, see AUTHORS. :license: GNU GPL, see LICENSE for more details. """ from pickle import dumps, loads import base64 from django.db import models from django.utils.translation import ugettext as _ DEFAULT_DATA = { 'event_name': 'OpenSlides', 'event_description': 'Presentation and voting system', 'agenda_countdown_time': 60, 'application_min_supporters': 4, 'application_preamble': 'Die Versammlung möge beschließen,', 'application_pdf_ballot_papers_selection': '1', 'application_pdf_title': _('Applications'), 'assignment_pdf_ballot_papers_selection': '1', 'assignment_pdf_title': _('Elections'), 'system_url': 'http://127.0.0.1:8000', 'system_welcometext': 'Welcome to OpenSlides!', } class ConfigStore(models.Model): key = models.CharField(max_length=100, primary_key=True) value = models.CharField(max_length=100) def __unicode__(self): return self.key class Meta: verbose_name = 'config' permissions = ( ('can_manage_system', "Can manage system configuration"), ) # TODO: # I used base64 to save pickled Data, there has to be another way see: # http://stackoverflow.com/questions/2524970/djangounicodedecodeerror-while-storing-pickled-data class Config(object): def load_config(self): self.config = {} for key, value in ConfigStore.objects.all().values_list(): self.config[key] = loads(base64.decodestring(str(value))) def __getitem__(self, key): try: self.config except AttributeError: self.load_config() try: return self.config[key] except KeyError: pass try: return DEFAULT_DATA[key] except KeyError: return None def __setitem__(self, key, value): try: c = ConfigStore.objects.get(pk=key) except ConfigStore.DoesNotExist: c = ConfigStore(pk=key) c.value = base64.encodestring(dumps(value)) c.save() self.config[key] = value