OpenSlides/openslides/agenda/models.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
openslides.agenda.models
~~~~~~~~~~~~~~~~~~~~~~~~
Models for the agenda app.
:copyright: 20112013 by OpenSlides team, see AUTHORS.
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:license: GNU GPL, see LICENSE for more details.
"""
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from datetime import datetime
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from django.db import models
from django.core.urlresolvers import reverse
from django.utils.translation import ugettext_lazy, ugettext_noop, ugettext as _
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from mptt.models import MPTTModel, TreeForeignKey
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from openslides.utils.exceptions import OpenSlidesError
from openslides.config.api import config
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from openslides.projector.projector import SlideMixin
from openslides.projector.api import (
register_slidemodel, get_slide_from_sid, register_slidefunc)
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from openslides.utils.person.models import PersonField
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class Item(MPTTModel, SlideMixin):
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"""
An Agenda Item
MPTT-model. See http://django-mptt.github.com/django-mptt/
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"""
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prefix = 'item'
AGENDA_ITEM = 1
ORGANIZATIONAL_ITEM = 2
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ITEM_TYPE = (
(AGENDA_ITEM, ugettext_lazy('Agenda item')),
(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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"""
Title of the agenda item.
"""
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text = models.TextField(null=True, blank=True, verbose_name=ugettext_lazy("Text"))
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"""
The optional text of the agenda item.
"""
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comment = models.TextField(null=True, blank=True, verbose_name=ugettext_lazy("Comment"))
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"""
Optional comment to the agenda item. Will not be shoun to normal users.
"""
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closed = models.BooleanField(default=False, verbose_name=ugettext_lazy("Closed"))
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"""
Flag, if the item is finished.
"""
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weight = models.IntegerField(default=0, verbose_name=ugettext_lazy("Weight"))
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"""
Weight to sort the item in the agenda.
"""
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parent = TreeForeignKey('self', null=True, blank=True,
related_name='children')
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"""
The parent item in the agenda tree.
"""
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type = models.IntegerField(max_length=1, choices=ITEM_TYPE,
default=AGENDA_ITEM, verbose_name=ugettext_lazy("Type"))
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"""
Type of the agenda item.
See Agenda.ITEM_TYPE for more informations.
"""
duration = models.CharField(null=True, blank=True, max_length=5,
verbose_name=ugettext_lazy("Duration (hh:mm)"))
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"""
The intended duration for the topic.
"""
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related_sid = models.CharField(null=True, blank=True, max_length=63)
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"""
Slide-ID to another object to show it in the agenda.
For example a motion or assignment.
"""
speaker_list_closed = models.BooleanField(
default=False, verbose_name=ugettext_lazy("List of speakers is closed"))
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"""
True, if the list of speakers is closed.
"""
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def get_related_slide(self):
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"""
return the object, of which the item points.
"""
object = get_slide_from_sid(self.related_sid, element=True)
if object is None:
self.title = 'Item for deleted slide: %s' % self.related_sid
self.related_sid = None
self.save()
return self
else:
return object
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def get_related_type(self):
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"""
return the type of the releated slide.
"""
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return self.get_related_slide().prefix
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def print_related_type(self):
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"""
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Print the type of the related item.
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For use in Template
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??Why does {% trans item.print_related_type|capfirst %} not work??
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"""
return _(self.get_related_type().capitalize())
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def get_title(self):
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"""
return the title of this item.
"""
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if self.related_sid is None:
return self.title
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return self.get_related_slide().get_agenda_title()
def get_title_supplement(self):
"""
return a supplement for the title.
"""
if self.related_sid is None:
return ''
try:
return self.get_related_slide().get_agenda_title_supplement()
except AttributeError:
return '(%s)' % self.print_related_type()
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def slide(self):
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"""
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Return a map with all Data for the Slide
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"""
if config['presentation_argument'] == 'summary':
data = {
'title': self.get_title(),
'items': self.get_children(),
'template': 'projector/AgendaSummary.html',
}
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elif config['presentation_argument'] == 'show_list_of_speakers':
speaker_query = Speaker.objects.filter(item=self)
coming_speakers = speaker_query.filter(begin_time=None).order_by('weight')
old_speakers = speaker_query.exclude(begin_time=None).exclude(end_time=None).order_by('end_time')
try:
actual_speaker = speaker_query.filter(end_time=None).exclude(begin_time=None).get()
except Speaker.DoesNotExist:
actual_speaker = None
slice_items = max(0, old_speakers.count()-2)
data = {'title': self.get_title(),
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'template': 'projector/agenda_list_of_speaker.html',
'coming_speakers': coming_speakers,
'old_speakers': old_speakers[slice_items:],
'actual_speaker': actual_speaker}
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elif self.related_sid:
data = self.get_related_slide().slide()
else:
data = {
'item': self,
'title': self.get_title(),
'template': 'projector/AgendaText.html',
}
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return data
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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
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try:
parent = self.parent.id
except AttributeError:
parent = 0
initial = {
'weight': self.weight,
'self': self.id,
'parent': parent,
}
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return ItemOrderForm(initial=initial, prefix="i%d" % self.id)
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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()
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def get_absolute_url(self, link='view'):
"""
Return the URL to this item. By default it is the Link to its
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slide
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link can be:
* view
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* edit
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* delete
"""
if link == 'view':
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if self.related_sid:
return self.get_related_slide().get_absolute_url(link)
return reverse('item_view', args=[str(self.id)])
if link == 'edit':
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if self.related_sid:
return self.get_related_slide().get_absolute_url(link)
return reverse('item_edit', args=[str(self.id)])
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if link == 'delete':
return reverse('item_delete', args=[str(self.id)])
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def __unicode__(self):
return self.get_title()
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class Meta:
permissions = (
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('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")),
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)
class MPTTMeta:
order_insertion_by = ['weight']
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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})
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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()
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"""
ForeinKey to the person who speaks.
"""
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item = models.ForeignKey(Item)
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"""
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)
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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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"""
The sort order of the list of speakers. None, if he has already spoken.
"""
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class Meta:
permissions = (
('can_be_speaker', ugettext_noop('Can put oneself on the list of speakers')),
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)
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 begin_speach(self):
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"""
Let the person speak.
Set the weight to None and the time to now. If anyone is still
speaking, end his speach.
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"""
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()
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self.weight = None
self.begin_time = datetime.now()
self.save()
def end_speach(self):
"""
The speach is finished. Set the time to now.
"""
self.end_time = datetime.now()
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self.save()