from datetime import datetime from django.contrib.contenttypes.models import ContentType from django.core.exceptions import ValidationError as DjangoValidationError from django.core.validators import MaxLengthValidator, MinValueValidator from django.utils.translation import ugettext as _ from django.utils.translation import ugettext_lazy from openslides.core.config import ConfigVariable from .models import Item def validate_start_time(value): try: datetime.strptime(value, '%d.%m.%Y %H:%M') except ValueError: raise DjangoValidationError(_('Invalid input.')) def setup_agenda_config(sender, **kwargs): """ Receiver function to setup all agenda config variables. They are not grouped. This function connected to the signal openslides.core.signals.config_signal during app loading. """ # TODO: Use an input type with generic datetime support. yield ConfigVariable( name='agenda_start_event_date_time', default_value='', label=ugettext_lazy('Begin of event'), help_text=ugettext_lazy('Input format: DD.MM.YYYY HH:MM'), weight=210, group=ugettext_lazy('Agenda'), validators=(validate_start_time,)) yield ConfigVariable( name='agenda_show_last_speakers', default_value=1, input_type='integer', label=ugettext_lazy('Number of last speakers to be shown on the projector'), weight=220, group=ugettext_lazy('Agenda'), validators=(MinValueValidator(0),)) yield ConfigVariable( name='agenda_couple_countdown_and_speakers', default_value=False, input_type='boolean', label=ugettext_lazy('Couple countdown with the list of speakers'), help_text=ugettext_lazy('[Begin speech] starts the countdown, [End speech] stops the countdown.'), weight=230, group=ugettext_lazy('Agenda')) yield ConfigVariable( name='agenda_number_prefix', default_value='', label=ugettext_lazy('Numbering prefix for agenda items'), weight=240, group=ugettext_lazy('Agenda'), validators=(MaxLengthValidator(20),)) yield ConfigVariable( name='agenda_numeral_system', default_value='arabic', input_type='choice', label=ugettext_lazy('Numeral system for agenda items'), choices=( {'value': 'arabic', 'display_name': ugettext_lazy('Arabic')}, {'value': 'roman', 'display_name': ugettext_lazy('Roman')}), weight=250, group=ugettext_lazy('Agenda')) def listen_to_related_object_delete_signal(sender, instance, **kwargs): """ Receiver function to change agenda items of a related item that is to be deleted. It is connected to the signal django.db.models.signals.pre_delete during app loading. """ if hasattr(instance, 'get_agenda_title'): for item in Item.objects.filter(content_type=ContentType.objects.get_for_model(sender), object_id=instance.pk): item.title = '< Item for deleted (%s) >' % instance.get_agenda_title() item.content_type = None item.object_id = None item.save()