OpenSlides/openslides/motion/views.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
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openslides.motion.views
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~~~~~~~~~~~~~~~~~~~~~~~
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Views for the motion app.
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The views are automaticly imported from openslides.motion.urls.
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:copyright: (c) 20112013 by the OpenSlides team, see AUTHORS.
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:license: GNU GPL, see LICENSE for more details.
"""
from django.core.urlresolvers import reverse
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from django.contrib import messages
from django.db import transaction
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from django.db.models import Model
from django.utils.text import slugify
from django.utils.translation import ugettext as _, ugettext_lazy, ugettext_noop
from django.http import Http404, HttpResponseRedirect
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from reportlab.platypus import SimpleDocTemplate
from openslides.utils.pdf import stylesheet
from openslides.utils.views import (
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TemplateView, RedirectView, UpdateView, CreateView, DeleteView, PDFView,
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DetailView, ListView, FormView, QuestionMixin, SingleObjectMixin)
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from openslides.utils.template import Tab
from openslides.utils.utils import html_strong, htmldiff
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from openslides.poll.views import PollFormView
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from openslides.projector.api import get_active_slide
from openslides.projector.projector import Widget
from openslides.config.api import config
from openslides.agenda.views import CreateRelatedAgendaItemView as _CreateRelatedAgendaItemView
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from .models import (Motion, MotionSubmitter, MotionSupporter, MotionPoll,
MotionVersion, State, WorkflowError, Category)
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from .forms import (BaseMotionForm, MotionSubmitterMixin, MotionSupporterMixin,
MotionDisableVersioningMixin, MotionCategoryMixin,
MotionIdentifierMixin, MotionWorkflowMixin, MotionImportForm)
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from .pdf import motions_to_pdf, motion_to_pdf, motion_poll_to_pdf
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from .csv_import import import_motions
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class MotionListView(ListView):
"""
View, to list all motions.
"""
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permission_required = 'motion.can_see_motion'
model = Motion
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motion_list = MotionListView.as_view()
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class MotionDetailView(DetailView):
"""
Show one motion.
"""
permission_required = 'motion.can_see_motion'
model = Motion
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def get_context_data(self, **kwargs):
"""
Return the template context.
Append the allowed actions for the motion, the shown version and its
data to the context.
"""
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version_number = self.kwargs.get('version_number', None)
if version_number is not None:
try:
version = self.object.versions.get(version_number=int(version_number))
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except MotionVersion.DoesNotExist:
raise Http404('Version %s not found' % version_number)
else:
version = self.object.get_active_version()
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kwargs.update({
'allowed_actions': self.object.get_allowed_actions(self.request.user),
'version': version,
'title': version.title,
'text': version.text,
'reason': version.reason})
return super(MotionDetailView, self).get_context_data(**kwargs)
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motion_detail = MotionDetailView.as_view()
class MotionEditMixin(object):
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"""
Mixin for motion views classes to save the version data.
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"""
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def form_valid(self, form):
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"""
Saves the CreateForm or UpdateForm into a motion object.
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"""
self.object = form.save(commit=False)
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try:
self.object.category = form.cleaned_data['category']
except KeyError:
pass
try:
self.object.identifier = form.cleaned_data['identifier']
except KeyError:
pass
self.manipulate_object(form)
for attr in ['title', 'text', 'reason']:
setattr(self.version, attr, form.cleaned_data[attr])
self.object.save(use_version=self.version)
# Save the submitter an the supporter so the motion.
# TODO: Only delete and save neccessary submitters and supporters
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if 'submitter' in form.cleaned_data:
self.object.submitter.all().delete()
MotionSubmitter.objects.bulk_create(
[MotionSubmitter(motion=self.object, person=person)
for person in form.cleaned_data['submitter']])
if 'supporter' in form.cleaned_data:
self.object.supporter.all().delete()
MotionSupporter.objects.bulk_create(
[MotionSupporter(motion=self.object, person=person)
for person in form.cleaned_data['supporter']])
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messages.success(self.request, self.get_success_message())
return HttpResponseRedirect(self.get_success_url())
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def get_form_class(self):
"""
Return the FormClass to create or update the motion.
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forms.BaseMotionForm is the base for the Class, and some FormMixins
will be mixed in dependence of some config values. See motion.forms
for more information on the mixins.
"""
form_classes = []
if (self.request.user.has_perm('motion.can_manage_motion') and
(config['motion_identifier'] == 'manually' or type(self) == MotionUpdateView)):
form_classes.append(MotionIdentifierMixin)
form_classes.append(BaseMotionForm)
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if self.request.user.has_perm('motion.can_manage_motion'):
form_classes.append(MotionSubmitterMixin)
form_classes.append(MotionCategoryMixin)
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if config['motion_min_supporters'] > 0:
form_classes.append(MotionSupporterMixin)
form_classes.append(MotionWorkflowMixin)
if self.object:
if config['motion_allow_disable_versioning'] and self.object.state.versioning:
form_classes.append(MotionDisableVersioningMixin)
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return type('MotionForm', tuple(form_classes), {})
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class MotionCreateView(MotionEditMixin, CreateView):
"""
View to create a motion.
"""
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model = Motion
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def has_permission(self, request, *args, **kwargs):
"""
Checks whether the requesting user can submit a new motion. He needs
at least the permission 'motion.can_create_motion'. If the submitting
of new motions by non-staff users is stopped via config variable
'motion_stop_submitting', the requesting user needs also to have
'motion.can_manage_motion'.
"""
if request.user.has_perm('motion.can_create_motion'):
return not config['motion_stop_submitting'] or request.user.has_perm('motion.can_manage_motion')
return False
def form_valid(self, form):
"""
Write a log message if the form is valid.
"""
response = super(MotionCreateView, self).form_valid(form)
self.object.write_log([ugettext_noop('Motion created')], self.request.user)
if (not 'submitter' in form.cleaned_data or
not form.cleaned_data['submitter']):
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self.object.add_submitter(self.request.user)
return response
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def get_initial(self):
initial = super(MotionCreateView, self).get_initial()
if self.request.user.has_perm('motion.can_manage_motion'):
initial['workflow'] = config['motion_workflow']
return initial
def manipulate_object(self, form):
"""
Sets first state according to given or default workflow and initiates
a new version.
"""
workflow = form.cleaned_data.get('workflow', config['motion_workflow'])
self.object.reset_state(workflow)
self.version = self.object.get_new_version()
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motion_create = MotionCreateView.as_view()
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class MotionUpdateView(MotionEditMixin, UpdateView):
"""
View to update a motion.
"""
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model = Motion
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def has_permission(self, request, *args, **kwargs):
"""
Check if the request.user has the permission to edit the motion.
"""
return self.get_object().get_allowed_actions(request.user)['update']
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def form_valid(self, form):
"""
Writes a log message and removes supports in some cases if the form is valid.
"""
response = super(MotionUpdateView, self).form_valid(form)
self.write_log()
if (config['motion_remove_supporters'] and self.object.state.allow_support and
not self.request.user.has_perm('motion.can_manage_motion')):
self.object.clear_supporters()
self.object.write_log([ugettext_noop('All supporters removed')], self.request.user)
return response
def write_log(self):
"""
Writes a log message. Distinguishs whether a version was created or updated.
"""
if self.version.id is None:
number = self.object.get_last_version().version_number
created = False
else:
number = self.version.version_number
created = self.used_new_version
self.object.write_log(
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[ugettext_noop('Motion version'),
' %d ' % number,
ugettext_noop('created') if created else ugettext_noop('updated')],
self.request.user)
def get_initial(self):
initial = super(MotionUpdateView, self).get_initial()
if self.request.user.has_perm('motion.can_manage_motion'):
initial['workflow'] = self.object.state.workflow
return initial
def manipulate_object(self, form):
"""
Resets state if the workflow should change and decides whether to use a
new version or the last version.
"""
workflow = form.cleaned_data.get('workflow', None)
if (workflow is not None and
workflow != self.object.state.workflow):
self.object.reset_state(workflow)
# Decide if a new version is saved to the database
if (self.object.state.versioning and
not form.cleaned_data.get('disable_versioning', False)):
self.version = self.object.get_new_version()
self.used_new_version = True
else:
self.version = self.object.get_last_version()
self.used_new_version = False
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motion_edit = MotionUpdateView.as_view()
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class MotionDeleteView(DeleteView):
"""
View to delete a motion.
"""
model = Motion
success_url_name = 'motion_list'
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def has_permission(self, request, *args, **kwargs):
"""
Check if the request.user has the permission to delete the motion.
"""
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return self.get_object().get_allowed_actions(request.user)['delete']
def get_success_message(self):
return _('%s was successfully deleted.') % _('Motion')
motion_delete = MotionDeleteView.as_view()
class VersionDeleteView(DeleteView):
"""
View to delete a motion version.
"""
model = MotionVersion
permission_required = 'motion.can_manage_motion'
success_url_name = 'motion_detail'
def get_object(self):
try:
motion = Motion.objects.get(pk=int(self.kwargs.get('pk')))
except Motion.DoesNotExist:
raise Http404('Motion %s not found.' % self.kwargs.get('pk'))
try:
version = MotionVersion.objects.get(
motion=motion,
version_number=int(self.kwargs.get('version_number')))
except MotionVersion.DoesNotExist:
raise Http404('Version %s not found.' % self.kwargs.get('version_number'))
if version == motion.active_version:
raise Http404('You can not delete the active version of a motion.')
return version
def get_success_url_name_args(self):
return (self.object.motion_id, )
version_delete = VersionDeleteView.as_view()
class VersionPermitView(SingleObjectMixin, QuestionMixin, RedirectView):
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"""
View to permit a version of a motion.
"""
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model = Motion
question_url_name = 'motion_version_detail'
success_url_name = 'motion_version_detail'
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success_message = ugettext_lazy('Version successfully permitted.')
permission_required = 'motion.can_manage_motion'
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def get(self, *args, **kwargs):
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"""
Set self.object to a motion.
"""
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self.object = self.get_object()
version_number = self.kwargs.get('version_number', None)
try:
self.version = self.object.versions.get(version_number=int(version_number))
except MotionVersion.DoesNotExist:
raise Http404('Version %s not found.' % version_number)
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return super(VersionPermitView, self).get(*args, **kwargs)
def get_url_name_args(self):
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"""
Returns a list with arguments to create the success- and question_url.
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"""
return [self.object.pk, self.version.version_number]
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def get_question(self):
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"""
Return a string, shown to the user as question to permit the version.
"""
return _('Are you sure you want permit version %s?') % self.version.version_number
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def case_yes(self):
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"""
Activate the version, if the user chooses 'yes'.
"""
self.object.active_version = self.version
self.object.save(update_fields=['active_version'])
self.object.write_log(
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message_list=[ugettext_noop('Version'),
' %d ' % self.version.version_number,
ugettext_noop('permitted')],
person=self.request.user)
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version_permit = VersionPermitView.as_view()
class VersionDiffView(DetailView):
"""
Show diff between two versions of a motion.
"""
permission_required = 'motion.can_see_motion'
model = Motion
template_name = 'motion/motion_diff.html'
def get_context_data(self, **kwargs):
"""
Return the template context with versions and html diff strings.
"""
try:
rev1 = int(self.request.GET['rev1'])
rev2 = int(self.request.GET['rev2'])
version_rev1 = self.object.versions.get(version_number=rev1)
version_rev2 = self.object.versions.get(version_number=rev2)
diff_text = htmldiff(version_rev1.text, version_rev2.text)
diff_reason = htmldiff(version_rev1.reason, version_rev2.reason)
except (KeyError, ValueError, MotionVersion.DoesNotExist):
messages.error(self.request, _('At least one version number is not valid.'))
version_rev1 = None
version_rev2 = None
diff_text = None
diff_reason = None
context = super(VersionDiffView, self).get_context_data(**kwargs)
context.update({
'version_rev1': version_rev1,
'version_rev2': version_rev2,
'diff_text': diff_text,
'diff_reason': diff_reason,
})
return context
version_diff = VersionDiffView.as_view()
class SupportView(SingleObjectMixin, QuestionMixin, RedirectView):
"""
View to support or unsupport a motion.
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If self.support is True, the view will append a request.user to the supporter list.
If self.support is False, the view will remove a request.user from the supporter list.
"""
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permission_required = 'motion.can_support_motion'
model = Motion
support = True
def get(self, request, *args, **kwargs):
"""
Set self.object to a motion.
"""
self.object = self.get_object()
return super(SupportView, self).get(request, *args, **kwargs)
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def check_permission(self, request):
"""
Return True if the user can support or unsupport the motion. Else: False.
"""
allowed_actions = self.object.get_allowed_actions(request.user)
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if self.support and not allowed_actions['support']:
messages.error(request, _('You can not support this motion.'))
return False
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elif not self.support and not allowed_actions['unsupport']:
messages.error(request, _('You can not unsupport this motion.'))
return False
else:
return True
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def get_question(self):
"""
Return the question string.
"""
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if self.support:
return _('Do you really want to support this motion?')
else:
return _('Do you really want to unsupport this motion?')
def case_yes(self):
"""
Append or remove the request.user from the motion.
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First the method checks the permissions, and writes a log message after
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appending or removing the user.
"""
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if self.check_permission(self.request):
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user = self.request.user
if self.support:
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self.object.support(person=user)
self.object.write_log([ugettext_noop('Motion supported')], user)
else:
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self.object.unsupport(person=user)
self.object.write_log([ugettext_noop('Motion unsupported')], user)
def get_success_message(self):
"""
Return the success message.
"""
if self.support:
return _("You have supported this motion successfully.")
else:
return _("You have unsupported this motion successfully.")
def get_redirect_url(self, **kwargs):
"""
Return the url, the view should redirect to.
"""
return self.object.get_absolute_url()
motion_support = SupportView.as_view(support=True)
motion_unsupport = SupportView.as_view(support=False)
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class PollCreateView(SingleObjectMixin, RedirectView):
"""
View to create a poll for a motion.
"""
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permission_required = 'motion.can_manage_motion'
model = Motion
def get(self, request, *args, **kwargs):
"""
Set self.object to a motion.
"""
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self.object = self.get_object()
return super(PollCreateView, self).get(request, *args, **kwargs)
def pre_redirect(self, request, *args, **kwargs):
"""
Create the poll for the motion.
"""
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self.poll = self.object.create_poll()
self.object.write_log([ugettext_noop("Poll created")], request.user)
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messages.success(request, _("New vote was successfully created."))
def get_redirect_url(self, **kwargs):
"""
Return the URL to the EditView of the poll.
"""
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return reverse('motion_poll_edit', args=[self.object.pk, self.poll.poll_number])
poll_create = PollCreateView.as_view()
class PollMixin(object):
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"""
Mixin for the PollUpdateView and the PollDeleteView.
"""
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permission_required = 'motion.can_manage_motion'
success_url_name = 'motion_detail'
def get_object(self):
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"""
Return a MotionPoll object.
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Use the motion id and the poll_number from the url kwargs to get the
object.
"""
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return MotionPoll.objects.filter(
motion=self.kwargs['pk'],
poll_number=self.kwargs['poll_number']).get()
def get_url_name_args(self):
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"""
Return the arguments to create the url to the success_url.
"""
return [self.object.motion.pk]
class PollUpdateView(PollMixin, PollFormView):
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"""
View to update a MotionPoll.
"""
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poll_class = MotionPoll
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"""
Poll Class to use for this view.
"""
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template_name = 'motion/poll_form.html'
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def get_context_data(self, **kwargs):
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"""
Return the template context.
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Append the motion object to the context.
"""
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context = super(PollUpdateView, self).get_context_data(**kwargs)
context.update({
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'motion': self.poll.motion,
'poll': self.poll})
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return context
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def form_valid(self, form):
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"""
Write a log message, if the form is valid.
"""
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value = super(PollUpdateView, self).form_valid(form)
self.object.write_log([ugettext_noop('Poll updated')], self.request.user)
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return value
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poll_edit = PollUpdateView.as_view()
class PollDeleteView(PollMixin, DeleteView):
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"""
View to delete a MotionPoll.
"""
model = MotionPoll
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def case_yes(self):
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"""
Write a log message, if the form is valid.
"""
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super(PollDeleteView, self).case_yes()
self.object.motion.write_log([ugettext_noop('Poll deleted')], self.request.user)
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def get_redirect_url(self, **kwargs):
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"""
Return the URL to the DetailView of the motion.
"""
return reverse('motion_detail', args=[self.object.motion.pk])
poll_delete = PollDeleteView.as_view()
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class PollPDFView(PollMixin, PDFView):
"""
Generates a ballotpaper.
"""
permission_required = 'motion.can_manage_motion'
top_space = 0
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def get(self, *args, **kwargs):
self.object = self.get_object()
return super(PollPDFView, self).get(*args, **kwargs)
def get_filename(self):
"""
Return the filename for the PDF.
"""
return u'%s%s_%s' % (_("Motion"), str(self.object.poll_number), _("Poll"))
def get_template(self, buffer):
return SimpleDocTemplate(
buffer, topMargin=-6, bottomMargin=-6, leftMargin=0, rightMargin=0,
showBoundary=False)
def build_document(self, pdf_document, story):
pdf_document.build(story)
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def append_to_pdf(self, pdf):
"""
Append PDF objects.
"""
motion_poll_to_pdf(pdf, self.object)
poll_pdf = PollPDFView.as_view()
class MotionSetStateView(SingleObjectMixin, RedirectView):
"""
View to set the state of a motion.
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If self.reset is False, the new state is taken from url.
If self.reset is True, the default state is taken.
"""
permission_required = 'motion.can_manage_motion'
url_name = 'motion_detail'
model = Motion
reset = False
def pre_redirect(self, request, *args, **kwargs):
"""
Save the new state and write a log message.
"""
self.object = self.get_object()
try:
if self.reset:
self.object.reset_state()
else:
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self.object.set_state(int(kwargs['state']))
except WorkflowError, e: # TODO: Is a WorkflowError still possible here?
messages.error(request, e)
else:
self.object.save(update_fields=['state', 'identifier'])
self.object.write_log(
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message_list=[ugettext_noop('State changed to'), ' %s' % self.object.state.name],
person=self.request.user)
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messages.success(request,
_('The state of the motion was set to %s.')
% html_strong(_(self.object.state.name)))
set_state = MotionSetStateView.as_view()
reset_state = MotionSetStateView.as_view(reset=True)
class CreateRelatedAgendaItemView(_CreateRelatedAgendaItemView):
"""
View to create and agenda item for a motion.
"""
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model = Motion
def pre_redirect(self, request, *args, **kwargs):
"""
Create the agenda item.
"""
super(CreateRelatedAgendaItemView, self).pre_redirect(request, *args, **kwargs)
self.object.write_log([ugettext_noop('Agenda item created')], self.request.user)
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create_agenda_item = CreateRelatedAgendaItemView.as_view()
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class MotionPDFView(SingleObjectMixin, PDFView):
"""
Create the PDF for one, or all motions.
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If self.print_all_motions is True, the view returns a PDF with all motions.
If self.print_all_motions is False, the view returns a PDF with only one
motion.
"""
permission_required = 'motion.can_see_motion'
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model = Motion
top_space = 0
print_all_motions = False
def get(self, request, *args, **kwargs):
"""
Set self.object to a motion.
"""
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if not self.print_all_motions:
self.object = self.get_object()
return super(MotionPDFView, self).get(request, *args, **kwargs)
def get_filename(self):
"""
Return the filename for the PDF.
"""
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if self.print_all_motions:
return _("Motions")
else:
if self.object.identifier:
suffix = self.object.identifier.replace(' ', '')
else:
suffix = self.object.title.replace(' ', '_')
suffix = slugify(suffix)
return '%s-%s' % (_("Motion"), suffix)
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def append_to_pdf(self, pdf):
"""
Append PDF objects.
"""
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if self.print_all_motions:
motions_to_pdf(pdf)
else:
motion_to_pdf(pdf, self.object)
motion_list_pdf = MotionPDFView.as_view(print_all_motions=True)
motion_detail_pdf = MotionPDFView.as_view(print_all_motions=False)
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class CategoryListView(ListView):
permission_required = 'motion.can_manage_motion'
model = Category
category_list = CategoryListView.as_view()
class CategoryCreateView(CreateView):
permission_required = 'motion.can_manage_motion'
model = Category
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success_url_name = 'motion_category_list'
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category_create = CategoryCreateView.as_view()
class CategoryUpdateView(UpdateView):
permission_required = 'motion.can_manage_motion'
model = Category
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success_url_name = 'motion_category_list'
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category_update = CategoryUpdateView.as_view()
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class CategoryDeleteView(DeleteView):
permission_required = 'motion.can_manage_motion'
model = Category
question_url_name = 'motion_category_list'
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success_url_name = 'motion_category_list'
category_delete = CategoryDeleteView.as_view()
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class MotionCSVImportView(FormView):
"""
Import motions via csv.
"""
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permission_required = 'motion.can_manage_motion'
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template_name = 'motion/motion_form_csv_import.html'
form_class = MotionImportForm
success_url_name = 'motion_list'
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def get_initial(self, *args, **kwargs):
"""
Sets the request user as initial for the default submitter.
"""
return_value = super(MotionCSVImportView, self).get_initial(*args, **kwargs)
return_value.update({'default_submitter': self.request.user.person_id})
return return_value
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def form_valid(self, form):
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"""
Processes the import function.
"""
count_success, count_lines, error_messages, warning_messages = import_motions(
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self.request.FILES['csvfile'],
default_submitter=form.cleaned_data['default_submitter'],
override=form.cleaned_data['override'],
importing_person=self.request.user)
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for message in error_messages:
messages.error(self.request, message)
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for message in warning_messages:
messages.warning(self.request, message)
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if count_success:
messages.success(
self.request,
"<strong>%s</strong><br>%s" % (
_('Summary'),
_('%(counts)d of %(total)d motions successfully imported.')
% {'counts': count_success, 'total': count_lines}))
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return super(MotionCSVImportView, self).form_valid(form)
motion_csv_import = MotionCSVImportView.as_view()
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def register_tab(request):
"""
Return the motion tab.
"""
# TODO: Find a better way to set the selected var.
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return Tab(
title=_('Motions'),
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app='motion',
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url=reverse('motion_list'),
permission=request.user.has_perm('motion.can_see_motion'),
selected=request.path.startswith('/motion/'))
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def get_widgets(request):
"""
Return the motion widgets for the dashboard.
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There is only one widget. It shows all motions.
"""
return [Widget(
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request,
name='motions',
display_name=_('Motions'),
template='motion/widget.html',
context={'motions': Motion.objects.all()},
permission_required='projector.can_manage_projector',
default_column=1,
default_weight=40)]