OpenSlides/openslides/application/models.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
openslides.application.models
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Models for the application app.
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:copyright: 2011, 2012 by OpenSlides team, see AUTHORS.
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:license: GNU GPL, see LICENSE for more details.
"""
from datetime import datetime
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from django.core.urlresolvers import reverse
from django.db import models
from django.db.models import Max
from django.dispatch import receiver
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from django.utils.translation import pgettext
from django.utils.translation import ugettext_lazy as _, ugettext_noop, ugettext
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from openslides.utils.utils import _propper_unicode
from openslides.utils.person import PersonField
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from openslides.config.models import config
from openslides.config.signals import default_config_value
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from openslides.poll.models import (BaseOption, BasePoll, CountVotesCast,
CountInvalid, BaseVote)
from openslides.projector.api import register_slidemodel
from openslides.projector.models import SlideMixin
from openslides.agenda.models import Item
class ApplicationSupporter(models.Model):
application = models.ForeignKey("Application")
person = PersonField()
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class Application(models.Model, SlideMixin):
prefix = "application"
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STATUS = (
('pub', _('Published')),
('per', _('Permitted')),
('acc', _('Accepted')),
('rej', _('Rejected')),
('wit', _('Withdrawed')),
('adj', _('Adjourned')),
('noc', _('Not Concerned')),
('com', _('Commited a bill')),
('nop', _('Rejected (not authorized)')),
('rev', _('Needs Review')), # Where is this status used?
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#additional actions:
# edit
# delete
# setnumber
# support
# unsupport
# createitem
# activateitem
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# genpoll
)
submitter = PersonField(verbose_name=_("Submitter"))
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number = models.PositiveSmallIntegerField(blank=True, null=True,
unique=True)
status = models.CharField(max_length=3, choices=STATUS, default='pub')
permitted = models.ForeignKey('AVersion', related_name='permitted', \
null=True, blank=True)
log = models.TextField(blank=True, null=True)
@property
def last_version(self):
"""
Return last version of the application.
"""
try:
return AVersion.objects.filter(application=self).order_by('id') \
.reverse()[0]
except IndexError:
return None
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@property
def public_version(self):
"""
Return permitted, if the application was permitted, else last_version
"""
if self.permitted is not None:
return self.permitted
else:
return self.last_version
def accept_version(self, version, user = None):
"""
accept a Version
"""
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self.permitted = version
self.save(nonewversion=True)
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version.rejected = False
version.save()
self.writelog(_("Version %d authorized") % (version.aid, ),
user)
def reject_version(self, version, user = None):
if version.id > self.permitted.id:
version.rejected = True
version.save()
self.writelog(pgettext("Rejected means not authorized", "Version %d rejected")
% (version.aid, ), user)
return True
return False
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@property
def versions(self):
"""
Return a list of all versions of the application.
"""
return AVersion.objects.filter(application=self)
@property
def creation_time(self):
"""
Return the time of the creation of the application.
"""
try:
return self.versions[0].time
except IndexError:
return None
@property
def notes(self):
"""
Return some information of the application.
"""
note = []
if self.status == "pub" and not self.enough_supporters:
note.append(_("Searching for supporters."))
if self.status == "pub" and self.permitted is None:
note.append(_("Not yet authorized."))
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elif self.unpermitted_changes and self.permitted:
note.append(_("Not yet authorized changes."))
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return note
@property
def unpermitted_changes(self):
"""
Return True if the application has unpermitted changes.
The application has unpermitted changes, if the permitted-version
is not the lastone and the lastone is not rejected.
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TODO: rename the property in unchecked__changes
"""
if (self.last_version != self.permitted
and not self.last_version.rejected):
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return True
else:
return False
@property
def supporters(self):
for object in self.applicationsupporter_set.all():
yield object.person
def is_supporter(self, person):
return self.applicationsupporter_set.filter(person=person).exists()
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@property
def enough_supporters(self):
"""
Return True, if the application has enough supporters
"""
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min_supporters = int(config['application_min_supporters'])
if self.status == "pub":
return self.count_supporters() >= min_supporters
else:
return True
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def count_supporters(self):
return self.applicationsupporter_set.count()
@property
def missing_supporters(self):
"""
Return number of missing supporters
"""
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min_supporters = int(config['application_min_supporters'])
delta = min_supporters - self.count_supporters()
if delta > 0:
return delta
else:
return 0
def save(self, user=None, nonewversion=False, trivial_change=False):
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"""
Save the Application, and create a new AVersion if necessary
"""
super(Application, self).save()
if nonewversion:
return
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last_version = self.last_version
fields = ["text", "title", "reason"]
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if last_version is not None:
changed_fields = [f for f in fields
if getattr(last_version, f) != getattr(self, f)]
if not changed_fields:
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return # No changes
try:
if trivial_change and last_version is not None:
last_version.text = self.text
last_version.title = self.title
last_version.reason = self.reason
last_version.save()
meta = AVersion._meta
field_names = [unicode(meta.get_field(f).verbose_name)
for f in changed_fields]
self.writelog(_("Trivial changes to version %(version)d; "
"changed fields: %(changed_fields)s")
% dict(version = last_version.aid,
changed_fields = ", ".join(field_names)))
return # Done
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version = AVersion(title=getattr(self, 'title', ''),
text=getattr(self, 'text', ''),
reason=getattr(self, 'reason', ''),
application=self)
version.save()
self.writelog(_("Version %s created") % version.aid, user)
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is_manager = user.has_perm('application.can_manage_application')
except AttributeError:
is_manager = False
supporters = self.applicationsupporter_set.all()
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if (self.status == "pub"
and supporters
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and not is_manager):
supporters.delete()
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self.writelog(_("Supporters removed"), user)
def reset(self, user):
"""
Reset the application.
"""
self.status = "pub"
self.permitted = None
self.save()
self.writelog(_("Status reseted to: %s") % (self.get_status_display()), user)
def support(self, person):
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"""
Add a Supporter to the list of supporters of the application.
"""
if person == self.submitter:
# TODO: Use own Exception
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raise NameError('Supporter can not be the submitter of a ' \
'application.')
if self.permitted is not None:
# TODO: Use own Exception
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raise NameError('This application is already permitted.')
if not self.is_supporter(person):
ApplicationSupporter(application=self, person=person).save()
self.writelog(_("Supporter: +%s") % (person))
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def unsupport(self, person):
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"""
remove a supporter from the list of supporters of the application
"""
if self.permitted is not None:
# TODO: Use own Exception
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raise NameError('This application is already permitted.')
try:
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object = self.applicationsupporter_set.get(person=person).delete()
except ApplicationSupporter.DoesNotExist:
pass
else:
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self.writelog(_("Supporter: -%s") % (person))
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def set_number(self, number=None, user=None):
"""
Set a number for ths application.
"""
if self.number is not None:
# TODO: Use own Exception
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raise NameError('This application has already a number.')
if number is None:
try:
number = Application.objects.aggregate(Max('number')) \
['number__max'] + 1
except TypeError:
number = 1
self.number = number
self.save()
self.writelog(_("Number set: %s") % (self.number), user)
return self.number
def permit(self, user=None):
"""
Change the status of this application to permit.
"""
self.set_status(user, "per")
aversion = self.last_version
if self.number is None:
self.set_number()
self.permitted = aversion
self.save()
self.writelog(_("Version %s authorized") % (aversion.aid), user)
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return self.permitted
def notpermit(self, user=None):
"""
Change the status of this application to 'not permitted (rejected)'.
"""
self.set_status(user, "nop")
#TODO: reject last version
aversion = self.last_version
#self.permitted = aversion
if self.number is None:
self.set_number()
self.save()
self.writelog(_("Version %s not authorized") % (self.last_version.aid), user)
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def set_status(self, user, status, force=False):
"""
Set the status of the application.
"""
error = True
for a, b in Application.STATUS:
if status == a:
error = False
break
if error:
#TODO: Use the Right Error
raise NameError(_('%s is not a valid status.') % status)
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if self.status == status:
#TODO: Use the Right Error
raise NameError(_('The motion status is already \'%s.\'') \
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% self.status)
actions = []
actions = self.get_allowed_actions(user)
if status not in actions and not force:
#TODO: Use the Right Error
raise NameError(_(
'The motion status is: \'%(currentstatus)s\'. '
'You can not set the status to \'%(newstatus)s\'.') % {
'currentstatus': self.status,
'newstatus': status})
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oldstatus = self.get_status_display()
self.status = status
self.save()
self.writelog(_("Status modified")+": %s -> %s" \
% (oldstatus, self.get_status_display()), user)
def get_allowed_actions(self, user):
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"""
Return a list of all the allowed status.
"""
actions = []
# check if user allowed to withdraw an application
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if ((self.status == "pub"
and self.number
and user == self.submitter)
or (self.status == "pub"
and self.number
and user.has_perm("application.can_manage_application"))
or (self.status == "per"
and user == self.submitter)
or (self.status == "per"
and user.has_perm("application.can_manage_application"))):
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actions.append("wit")
#Check if the user can review the application
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if (self.status == "rev"
and (self.submitter == user
or user.has_perm("application.can_manage_application"))):
actions.append("pub")
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# Check if the user can support and unspoort the application
if (self.status == "pub"
and user != self.submitter
and not self.is_supporter(user)):
actions.append("support")
if self.status == "pub" and self.is_supporter(user):
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actions.append("unsupport")
#Check if the user can edit the application
if (user == self.submitter \
and (self.status in ('pub', 'per'))) \
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or user.has_perm("application.can_manage_application"):
actions.append("edit")
# Check if the user can delete the application (admin, manager, owner)
# reworked as requiered in #100
if (user.has_perm("applicatoin.can_delete_all_applications") or
(user.has_perm("application.can_manage_application") and
self.number is None) or
(self.submitter == user and self.number is None)):
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actions.append("delete")
#For the rest, all actions need the manage permission
if not user.has_perm("application.can_manage_application"):
return actions
if self.status == "pub":
actions.append("nop")
actions.append("per")
if self.number == None:
actions.append("setnumber")
if self.status == "per":
actions.append("acc")
actions.append("rej")
actions.append("adj")
actions.append("noc")
actions.append("com")
actions.append("genpoll")
if self.unpermitted_changes:
actions.append("permitversion")
actions.append("rejectversion")
return actions
def delete(self, force=False):
"""
Delete the application. It is not possible, if the application has
allready a number
"""
if self.number and not force:
raise NameError('The application has already a number. ' \
'You can not delete it.')
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for item in Item.objects.filter(related_sid=self.sid):
item.delete()
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super(Application, self).delete()
def writelog(self, text, user=None):
if not self.log:
self.log = ""
self.log += u"%s | %s" % (datetime.now().strftime("%d.%m.%Y %H:%M:%S"), _propper_unicode(text))
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if user is not None:
self.log += u" (%s %s)" % (_("by"), _propper_unicode(user.username))
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self.log += "\n"
self.save()
def get_agenda_title(self):
return self.public_version.title
def get_agenda_title_supplement(self):
number = self.number or '<i>[%s]</i>' % ugettext('no number')
return '(%s %s)' % (ugettext('motion'), number)
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def __getattr__(self, name):
"""
if name is title, text, reason or time,
Return this attribute from the newest version of the application
"""
if name in ('title', 'text', 'reason', 'time', 'aid'):
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try:
if name == 'aid':
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return self.last_version.aid
return self.last_version.__dict__[name]
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except TypeError:
raise AttributeError(name)
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except AttributeError:
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raise AttributeError(name)
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raise AttributeError(name)
def gen_poll(self, user=None):
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"""
Generates a poll object for the application
"""
poll = ApplicationPoll(application=self)
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poll.save()
poll.set_options()
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self.writelog(_("Poll created"), user)
return poll
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@property
def polls(self):
return self.applicationpoll_set.all()
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@property
def results(self):
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return self.get_poll_results()
def get_poll_results(self):
"""
Return a list of voting results
"""
results = []
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for poll in self.polls:
for option in poll.get_options():
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if option.get_votes().exists():
results.append((option['Yes'], option['No'],
option['Abstain'], poll.print_votesinvalid(),
poll.print_votescast()))
return results
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def slide(self):
"""
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return the slide dict
"""
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data = super(Application, self).slide()
data['application'] = self
data['title'] = self.title
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data['template'] = 'projector/Application.html'
return data
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def get_absolute_url(self, link='view'):
if link == 'view':
return reverse('application_view', args=[str(self.id)])
if link == 'edit':
return reverse('application_edit', args=[str(self.id)])
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if link == 'delete':
return reverse('application_delete', args=[str(self.id)])
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def __unicode__(self):
try:
return self.last_version.title
except AttributeError:
return "no title jet"
class Meta:
permissions = (
('can_see_application', ugettext_noop("Can see motions")),
('can_create_application', ugettext_noop("Can create motions")),
('can_support_application', ugettext_noop("Can support motions")),
('can_manage_application', ugettext_noop("Can manage motions")),
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)
class AVersion(models.Model):
title = models.CharField(max_length=100, verbose_name = _("Title"))
text = models.TextField(verbose_name = _("Text"))
reason = models.TextField(null=True, blank=True, verbose_name = _("Reason"))
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rejected = models.BooleanField() # = Not Permitted
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time = models.DateTimeField(auto_now=True)
application = models.ForeignKey(Application)
def __unicode__(self):
return "%s %s" % (self.id, self.title)
@property
def aid(self):
try:
return self._aid
except AttributeError:
self._aid = AVersion.objects \
.filter(application=self.application) \
.filter(id__lte=self.id).count()
return self._aid
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register_slidemodel(Application)
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class ApplicationVote(BaseVote):
option = models.ForeignKey('ApplicationOption')
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class ApplicationOption(BaseOption):
poll = models.ForeignKey('ApplicationPoll')
vote_class = ApplicationVote
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class ApplicationPoll(BasePoll, CountInvalid, CountVotesCast):
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option_class = ApplicationOption
vote_values = [ugettext_noop('Yes'), ugettext_noop('No'),
ugettext_noop('Abstain')]
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application = models.ForeignKey(Application)
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def get_application(self):
return self.application
def set_options(self):
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#TODO: maybe it is possible with .create() to call this without poll=self
self.get_option_class()(poll=self).save()
def append_pollform_fields(self, fields):
CountInvalid.append_pollform_fields(self, fields)
CountVotesCast.append_pollform_fields(self, fields)
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def get_absolute_url(self):
return reverse('application_poll_view', args=[self.id])
def get_ballot(self):
return self.application.applicationpoll_set.filter(id__lte=self.id).count()
@receiver(default_config_value, dispatch_uid="application_default_config")
def default_config(sender, key, **kwargs):
return {
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'application_min_supporters': 0,
'application_preamble': _('The Assembly may decide,'),
'application_pdf_ballot_papers_selection': 'CUSTOM_NUMBER',
'application_pdf_ballot_papers_number': '8',
'application_pdf_title': _('Motions'),
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'application_pdf_preamble': '',
'application_allow_trivial_change': False,
}.get(key)