#!/usr/bin/env python # -*- coding: utf-8 -*- """ openslides.agenda.models ~~~~~~~~~~~~~~~~~~~~~~~~ Models for the agenda app. :copyright: 2011–2013 by OpenSlides team, see AUTHORS. :license: GNU GPL, see LICENSE for more details. """ from datetime import datetime from time import time from django.contrib.auth.models import AnonymousUser from django.contrib.contenttypes import generic from django.contrib.contenttypes.models import ContentType from django.core.urlresolvers import reverse from django.db import models from django.utils.translation import ugettext as _ from django.utils.translation import ugettext_lazy, ugettext_noop from mptt.models import MPTTModel, TreeForeignKey from openslides.projector.api import (get_active_slide, update_projector, update_projector_overlay, start_countdown, stop_countdown) from openslides.projector.models import SlideMixin from openslides.utils.exceptions import OpenSlidesError from openslides.utils.person.models import PersonField class Item(SlideMixin, MPTTModel): """ An Agenda Item MPTT-model. See http://django-mptt.github.com/django-mptt/ """ slide_callback_name = 'agenda' AGENDA_ITEM = 1 ORGANIZATIONAL_ITEM = 2 ITEM_TYPE = ( (AGENDA_ITEM, ugettext_lazy('Agenda item')), (ORGANIZATIONAL_ITEM, ugettext_lazy('Organizational item'))) title = models.CharField(null=True, max_length=255, verbose_name=ugettext_lazy("Title")) """ Title of the agenda item. """ text = models.TextField(null=True, blank=True, verbose_name=ugettext_lazy("Text")) """ The optional text of the agenda item. """ comment = models.TextField(null=True, blank=True, verbose_name=ugettext_lazy("Comment")) """ Optional comment to the agenda item. Will not be shoun to normal users. """ closed = models.BooleanField(default=False, verbose_name=ugettext_lazy("Closed")) """ Flag, if the item is finished. """ type = models.IntegerField(max_length=1, choices=ITEM_TYPE, default=AGENDA_ITEM, verbose_name=ugettext_lazy("Type")) """ Type of the agenda item. See Item.ITEM_TYPE for more information. """ duration = models.CharField(null=True, blank=True, max_length=5, verbose_name=ugettext_lazy("Duration (hh:mm)")) """ The intended duration for the topic. """ parent = TreeForeignKey('self', null=True, blank=True, related_name='children') """ The parent item in the agenda tree. """ weight = models.IntegerField(default=0, verbose_name=ugettext_lazy("Weight")) """ Weight to sort the item in the agenda. """ content_type = models.ForeignKey(ContentType, null=True, blank=True) """ Field for generic relation to a related object. Type of the object. """ object_id = models.PositiveIntegerField(null=True, blank=True) """ Field for generic relation to a related object. Id of the object. """ # TODO: rename it to object_pk content_object = generic.GenericForeignKey() """ Field for generic relation to a related object. General field to the related object. """ speaker_list_closed = models.BooleanField( default=False, verbose_name=ugettext_lazy("List of speakers is closed")) """ True, if the list of speakers is closed. """ class Meta: permissions = ( ('can_see_agenda', ugettext_noop("Can see agenda")), ('can_manage_agenda', ugettext_noop("Can manage agenda")), ('can_see_orga_items', ugettext_noop("Can see orga items and time scheduling of agenda"))) class MPTTMeta: order_insertion_by = ['weight'] def save(self, *args, **kwargs): super(Item, self).save(*args, **kwargs) active_slide = get_active_slide() active_slide_pk = active_slide.get('pk', None) if (active_slide['callback'] == 'agenda' and unicode(self.parent_id) == unicode(active_slide_pk)): update_projector() def __unicode__(self): return self.get_title() def get_absolute_url(self, link='detail'): """ Return the URL to this item. The link can be detail, update or delete. """ if link == 'detail' or link == 'view': return reverse('item_view', args=[str(self.id)]) if link == 'update' or link == 'edit': return reverse('item_edit', args=[str(self.id)]) if link == 'delete': return reverse('item_delete', args=[str(self.id)]) if link == 'projector_list_of_speakers': return '%s&type=list_of_speakers' % super(Item, self).get_absolute_url('projector') if link == 'projector_summary': return '%s&type=summary' % super(Item, self).get_absolute_url('projector') return super(Item, self).get_absolute_url(link) def get_title(self): """ Return the title of this item. """ if not self.content_object: return self.title try: return self.content_object.get_agenda_title() except AttributeError: raise NotImplementedError('You have to provide a get_agenda_title method on your related model.') def get_title_supplement(self): """ Return a supplement for the title. """ if not self.content_object: return '' try: return self.content_object.get_agenda_title_supplement() except AttributeError: raise NotImplementedError('You have to provide a get_agenda_title_supplement method on your related model.') def set_closed(self, closed=True): """ Changes the closed-status of the item. """ self.closed = closed self.save() @property def weight_form(self): """ Return the WeightForm for this item. """ from openslides.agenda.forms import ItemOrderForm try: parent = self.parent.id except AttributeError: parent = 0 initial = { 'weight': self.weight, 'self': self.id, 'parent': parent, } return ItemOrderForm(initial=initial, prefix="i%d" % self.id) def delete(self, with_children=False): """ Delete the Item. """ if not with_children: for child in self.get_children(): child.move_to(self.parent) child.save() super(Item, self).delete() Item.objects.rebuild() def get_list_of_speakers(self, old_speakers_count=None, coming_speakers_count=None): """ Returns the list of speakers as a list of dictionaries. Each dictionary contains a prefix, the speaker and its type. Types are old_speaker, actual_speaker and coming_speaker. """ speaker_query = Speaker.objects.filter(item=self) # TODO: Why not self.speaker_set? list_of_speakers = [] # Parse old speakers old_speakers = speaker_query.exclude(begin_time=None).exclude(end_time=None).order_by('end_time') if old_speakers_count is None: old_speakers_count = old_speakers.count() last_old_speakers_count = max(0, old_speakers.count() - old_speakers_count) old_speakers = old_speakers[last_old_speakers_count:] for number, speaker in enumerate(old_speakers): prefix = old_speakers_count - number speaker_dict = { 'prefix': '-%d' % prefix, 'speaker': speaker, 'type': 'old_speaker', 'first_in_group': False, 'last_in_group': False} if number == 0: speaker_dict['first_in_group'] = True if number == old_speakers_count - 1: speaker_dict['last_in_group'] = True list_of_speakers.append(speaker_dict) # Parse actual speaker try: actual_speaker = speaker_query.filter(end_time=None).exclude(begin_time=None).get() except Speaker.DoesNotExist: pass else: list_of_speakers.append({ 'prefix': '0', 'speaker': actual_speaker, 'type': 'actual_speaker', 'first_in_group': True, 'last_in_group': True}) # Parse coming speakers coming_speakers = speaker_query.filter(begin_time=None).order_by('weight') if coming_speakers_count is None: coming_speakers_count = coming_speakers.count() coming_speakers = coming_speakers[:max(0, coming_speakers_count)] for number, speaker in enumerate(coming_speakers): speaker_dict = { 'prefix': number + 1, 'speaker': speaker, 'type': 'coming_speaker', 'first_in_group': False, 'last_in_group': False} if number == 0: speaker_dict['first_in_group'] = True if number == coming_speakers_count - 1: speaker_dict['last_in_group'] = True list_of_speakers.append(speaker_dict) return list_of_speakers def get_next_speaker(self): """ Returns the speaker object of the person who is next. """ try: return self.speaker_set.filter(begin_time=None).order_by('weight')[0] except IndexError: # The list of speakers is empty. return None class SpeakerManager(models.Manager): def add(self, person, item): if self.filter(person=person, item=item, begin_time=None).exists(): raise OpenSlidesError(_( '%(person)s is already on the list of speakers of item %(id)s.') % {'person': person, 'id': item.id}) if isinstance(person, AnonymousUser): raise OpenSlidesError( _('An anonymous user can not be on lists of speakers.')) weight = (self.filter(item=item).aggregate( models.Max('weight'))['weight__max'] or 0) return self.create(item=item, person=person, weight=weight + 1) class Speaker(models.Model): """ Model for the Speaker list. """ objects = SpeakerManager() person = PersonField() """ ForeinKey to the person who speaks. """ item = models.ForeignKey(Item) """ ForeinKey to the AgendaItem to which the person want to speak. """ begin_time = models.DateTimeField(null=True) """ Saves the time, when the speaker begins to speak. None, if he has not spoken yet. """ end_time = models.DateTimeField(null=True) """ Saves the time, when the speaker ends his speach. None, if he is not finished yet. """ weight = models.IntegerField(null=True) """ The sort order of the list of speakers. None, if he has already spoken. """ class Meta: permissions = ( ('can_be_speaker', ugettext_noop('Can put oneself on the list of speakers')), ) def save(self, *args, **kwargs): super(Speaker, self).save(*args, **kwargs) self.check_and_update_projector() def delete(self, *args, **kwargs): super(Speaker, self).delete(*args, **kwargs) self.check_and_update_projector() def __unicode__(self): return unicode(self.person) def get_absolute_url(self, link='detail'): if link == 'detail' or link == 'view': return self.person.get_absolute_url('detail') if link == 'delete': return reverse('agenda_speaker_delete', args=[self.item.pk, self.pk]) def check_and_update_projector(self): """ Checks, if the agenda item, or parts of it, is on the projector. If yes, it updates the projector. """ active_slide = get_active_slide() active_slide_pk = active_slide.get('pk', None) slide_type = active_slide.get('type', None) if (active_slide['callback'] == 'agenda' and unicode(self.item_id) == unicode(active_slide_pk)): if slide_type == 'list_of_speakers': update_projector() elif slide_type is None: update_projector_overlay('agenda_speaker') def begin_speach(self): """ Let the person speak. Set the weight to None and the time to now. If anyone is still speaking, end his speach. """ try: actual_speaker = Speaker.objects.filter(item=self.item, end_time=None).exclude(begin_time=None).get() except Speaker.DoesNotExist: pass else: actual_speaker.end_speach() self.weight = None self.begin_time = datetime.now() self.save() # start countdown if config['agenda_couple_countdown_and_speakers']: start_countdown() def end_speach(self): """ The speach is finished. Set the time to now. """ self.end_time = datetime.now() self.save() # stop countdown if config['agenda_couple_countdown_and_speakers']: stop_countdown()