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