start to rewrite the poll-api

openslides/agenda/templates/agenda/overview.html

@@ -137,29 +137,7 @@
                 </td>
                 {% if perms.agenda.can_manage_agenda %}
                 <td>
-                    {% ifequal item.type 'ItemApplication' %}
+                    Text
-                        <a href="{% url application_view item.cast.application.id %}">{% trans "Application" %} {{ item.cast.application.number }}</a>
-                    {% endifequal %}
-
-                    {% ifequal item.type 'ItemPoll' %}
-                        {% if item.cast.poll.application %}
-                            <a href="{% url poll_view item.cast.poll.id %}">{% trans "Poll of Application" %}</a>
-                        {% endif %}
-                        {% if item.cast.poll.assignment %}
-                            <a href="{% url poll_view item.cast.poll.id %}">{% trans "Poll of Election" %}</a>
-                        {% endif %}
-                    {% endifequal %}
-
-                    {% ifequal item.type 'ItemAssignment' %}
-                        <a href="{% url assignment_view item.cast.assignment.id %}">{% trans "Election" %}</a>
-                    {% endifequal %}
-
-                    {% ifequal item.type 'ItemText' %}
-                        Text
-                    {% endifequal %}
-                    {% if item.hidden %}
-                        ({% trans 'hidden' %})
-                    {% endif %}
                 </td>
                 {% endif %}
                 <td><span style="width: 1px;white-space: nowrap;">

openslides/application/models.py

@@ -23,6 +23,8 @@ from projector.models import Slide
 from participant.models import Profile
 from system.api import config_get
 from utils.utils import _propper_unicode
+from poll import ChoicePoll
+from poll.models import BaseOption, BasePoll
 
 
 class Application(models.Model, Slide):
@@ -410,24 +412,28 @@ class Application(models.Model, Slide):
         """
         Generates a poll object for the application
         """
-        from poll.models import Poll
+        poll = ApplicationPoll()
-        poll = Poll(optiondecision=True, \
-                    application=self)
         poll.save()
-        poll.add_option(self)
+        poll.set_options([{'application': self}])
         self.writelog(_("Poll created"), user)
         return poll
 
+    @property
+    def polls(self):
+        #todo: return an query_set
+        return [option.poll for option in self.applicationoption_set.all()]
+
     @property
     def results(self):
         """
         Return a list of voting results
         """
+        # TODO: This will propably not work
         results = []
-        for poll in self.poll_set.all():
+        for poll in self.polls:
-            for option in poll.options:
+            for option in poll.get_options():
-                if poll.votesinvalid != None and poll.votescast != None:
+                #if poll.votesinvalid != None and poll.votescast != None:
-                    results.append([option.yes, option.no, option.undesided, poll.votesinvalidf, poll.votescastf])
+                results.append([option.yes, option.no, option.undesided, poll.votesinvalidf, poll.votescastf])
         return results
 
     def slide(self):
@@ -484,3 +490,14 @@ class AVersion(models.Model):
             return self._aid
 
 register_slidemodel(Application)
+
+
+class ApplicationOption(BaseOption):
+    application = models.ForeignKey(Application)
+
+    def __unicode__(self):
+        return unicode(self.application)
+
+
+class ApplicationPoll(BasePoll):
+    option_class = ApplicationOption

openslides/application/templates/application/poll_view.html

@@ -6,60 +6,45 @@
 
 {% if perms.application.can_manage_application %}
 {% block submenu %}
-{{ block.super }}
+    {{ block.super }}
-<br>
+    <br>
-<h3>{%trans "Application No." %} {{ poll.application.number }}</h3>
+    <h3>{%trans "Application No." %} {{ poll.application.number }}</h3>
-<ul>
+    <ul>
-<li><a href="{% url print_application_poll poll.id %}"><img src="/static/images/icons/application-pdf.png"> {%trans 'Print vote' %}</a></li>
+    <li><a href="{% url print_application_poll poll.id %}"><img src="/static/images/icons/application-pdf.png"> {%trans 'Print vote' %}</a></li>
-</ul>
+    </ul>
 {% endblock %}
 {% endif %}
 
 {% block content %}
-    <h1>{%trans "Application No." %} {{ poll.application.number }} - {%trans "Vote" %}</h1>
+    <h1>{%trans "Application No." %} {{ application.number }} - {%trans "Vote" %}</h1>
-    <h3>{{ poll.application.title }}</h3>
+    <h3>{{ application.title }}</h3>
 
     <p>{%trans "Results of" %} {{ ballot }}. {%trans "Vote" %}</p>
     <i>-1 := {% trans 'majority' %}, -2 := {% trans 'undocumented' %}</i>
     <form action="" method="post">{% csrf_token %}
-    <table class="table" style="width: auto;">
+        <table class="table" style="width: auto;">
-    <tr>
+        <tr>
-        <th>{%trans "Option" %}</th>
+            <th>{% trans "Option" %}</th>
-        <th>{%trans "Votes" %}</th>
+            <th>{% trans "Votes" %}</th>
-    </tr>
+        </tr>
-    <tr>
+        {% for value in forms.0 %}
-        <td>{%trans "Yes" %}</td>
+            <tr>
-        <td>{{ options.0.form.yes.errors }}{{ options.0.form.yes }}</td>
+                <td>{{ value.label }}</td>
-    </tr>
+                <td>{{ value.errors }}{{ value }}</td>
-    <tr class="odd">
+            </tr>
-        <td>{%trans "No" %}</label></td>
+        {% endfor %}
-        <td>{{ options.0.form.no.errors }}{{ options.0.form.no }}</td>
+        </table>
-    </tr>
+        <p>
-    <tr>
+        <button class="button" type="submit">
-        <td>{%trans "Abstentions" %}</td>
+            <span class="icon ok">{%trans 'Save' %}</span>
-        <td>{{ options.0.form.undesided.errors }}{{ options.0.form.undesided }}</td>
+        </button>
-    </tr>
+        <button class="button" type="submit" name="apply">
-    <tr class="odd">
+            <span class="icon apply">{%trans 'Apply' %}</span>
-        <td>{%trans "Invalid votes" %}</td>
+        </button>
-        <td>{{ form.invalid.errors }}{{ form.invalid }}</td>
+        <a href='{% url application_view application.id %}'>
-    </tr>
+        <button class="button" type="button" onclick="window.location='{% url application_view application.id %}'">
-    <tr class="total">
+            <span class="icon cancel">{%trans 'Cancel' %}</span>
-        <td style="white-space: nowrap;"><b>{%trans "Votes cast" %}</b></td>
+        </button>
-        <td>{{ form.votescast.errors }}{{ form.votescast }}</td>
+        </a>
-    </tr>
-    </table>
-    <p>
-    <button class="button" type="submit">
-        <span class="icon ok">{%trans 'Save' %}</span>
-    </button>
-    <button class="button" type="submit" name="apply">
-        <span class="icon apply">{%trans 'Apply' %}</span>
-    </button>
-    <a href='{% url application_view poll.application.id %}'>
-    <button class="button" type="button" onclick="window.location='{% url application_view poll.application.id %}'">
-        <span class="icon cancel">{%trans 'Cancel' %}</span>
-    </button>
-    </a>
-
     </form>
 {% endblock %}

openslides/application/templates/application/view.html

@@ -47,7 +47,7 @@
     {% endfor %}
 
     <h4>{% trans "Vote results" %}:</h4>
-        {% with application.poll_set.all as polls %}
+        {% with application.polls as polls %}
         {% if polls|length == 0 %}
             {% if perms.application.can_manage_application %}
                 {% if "genpoll" in actions %}

openslides/application/urls.py

@@ -11,6 +11,10 @@
 """
 
 from django.conf.urls.defaults import *
+from django.utils.translation import ugettext as _
+
+from application.views import ViewPoll
+
 
 urlpatterns = patterns('application.views',
     url(r'^application/$', 'overview', \
@@ -77,8 +81,10 @@ urlpatterns = patterns('application.views',
     url(r'^application/poll/(?P<poll_id>\d+)/print$', 'print_application_poll', \
         name='print_application_poll'),
 
-    url(r'^application/poll/(?P<poll_id>\d+)$', 'view_poll', \
+    url(r'^application/poll/(?P<poll_id>\d+)$',
-        name='application_poll_view'),
+        ViewPoll.as_view(),
+        name='application_poll_view'
+    ),
 
     url(r'^application/poll/(?P<poll_id>\d+)/del$', 'delete_poll', \
         name='application_poll_delete'),

openslides/application/views.py

@@ -23,14 +23,15 @@ from django.utils.translation import ugettext as _
 from django.utils.translation import ungettext
 from django.db import transaction
 
-from openslides.agenda.models import Item
+from agenda.models import Item
-from openslides.application.models import Application, AVersion
+from application.models import Application, AVersion, ApplicationPoll
-from openslides.application.forms import ApplicationForm, \
+from application.forms import ApplicationForm, \
                                          ApplicationManagerForm, \
                                          ApplicationImportForm
 from openslides.participant.models import Profile
-from openslides.poll.models import Poll
+
-from openslides.poll.forms import OptionResultForm, PollForm
+from poll.models import PollFormView
+
 from openslides.utils.utils import template, permission_required, \
                                    render_to_forbitten, del_confirm_form, gen_confirm_form
 from openslides.utils.pdf import print_application, print_application_poll
@@ -92,7 +93,7 @@ def view(request, application_id, newest=False):
         'actions': actions,
         'min_supporters': int(config_get('application_min_supporters')),
         'version': version,
-        'results': application.results
+        #'results': application.results
     }
 
 
@@ -347,7 +348,7 @@ def gen_poll(request, application_id):
         poll = Application.objects.get(pk=application_id).gen_poll(user=request.user)
         messages.success(request, _("New vote was successfully created.") )
     except Application.DoesNotExist:
-        pass
+        pass # TODO: do not call poll after this excaption
     return redirect(reverse('application_poll_view', args=[poll.id]))
 
 
@@ -373,9 +374,9 @@ def view_poll(request, poll_id):
     """
     view a poll for this application.
     """
-    poll = Poll.objects.get(pk=poll_id)
+    poll = ApplicationPoll.objects.get(pk=poll_id)
-    ballot = poll.ballot
+    #ballot = poll.ballot
-    options = poll.options
+    options = poll.get_options()
     if request.user.has_perm('application.can_manage_application'):
         if request.method == 'POST':
             form = PollForm(request.POST, prefix="poll")
@@ -408,9 +409,27 @@ def view_poll(request, poll_id):
         'poll': poll,
         'form': form,
         'options': options,
-        'ballot': ballot,
+        #'ballot': ballot,
     }
 
+
+class ViewPoll(PollFormView):
+    poll_class = ApplicationPoll
+    vote_values = [_('yes'), _('no'), _('contained')]
+    template_name = 'application/poll_view.html'
+
+    def get_context_data(self, **kwargs):
+        context = super(ViewPoll, self).get_context_data()
+        self.application = self.poll.get_options()[0].application
+        context['application'] = self.application
+        return context
+
+    def get_success_url(self):
+        if not 'apply' in self.request.POST:
+            return reverse('application_view', args=[self.application.id])
+        return ''
+
+
 @permission_required('application.can_manage_application')
 def permit_version(request, aversion_id):
     aversion = AVersion.objects.get(pk=aversion_id)

openslides/assignment/views.py

@@ -17,8 +17,8 @@ from django.contrib.auth.decorators import login_required
 from django.utils.translation import ugettext as _
 
 from openslides.agenda.models import Item
-from poll.models import Poll, Option
+#from poll.models import Poll, Option
-from poll.forms import OptionResultForm, PollForm
+#from poll.forms import OptionResultForm, PollForm
 from assignment.models import Assignment
 from assignment.forms import AssignmentForm, AssignmentRunForm
 from utils.utils import template, permission_required, gen_confirm_form, del_confirm_form, ajax_request

openslides/participant/models.py

@@ -52,3 +52,4 @@ class Profile(models.Model):
             ('can_see_participant', "Can see participant"),
             ('can_manage_participant', "Can manage participant"),
         )
+

openslides/poll/__init__.py

@@ -0,0 +1,12 @@
+from django.utils.translation import ugettext as _
+
+from models import PollFormView, BasePoll
+
+
+class DesicionPoll(PollFormView):
+    vote_values = [_('yes'), _('no'), _('contained')]
+    poll_class = BasePoll
+
+
+class ChoicePoll(PollFormView):
+    poll_class = BasePoll

openslides/poll/models.py

@@ -12,185 +12,142 @@
 
 from django.db import models
 from django.utils.translation import ugettext as _
-
+from django import forms
-from application.models import Application
+from django.views.generic import TemplateView
-from assignment.models import Assignment
+from django.http import HttpResponseRedirect
-from participant.models import Profile
 
 
-class Poll(models.Model):
+class OptionForm(forms.Form):
-    optiondecision = models.BooleanField(default=True, verbose_name = _("Poll of decision (yes, no, abstention)"))
+    def __init__(self, *args, **kwargs):
-    application = models.ForeignKey(Application, null=True, blank=True, verbose_name = _("Application"))
+        extra = kwargs.pop('extra')
-    assignment = models.ForeignKey(Assignment, null=True, blank=True, verbose_name = _("Election"))
+        formid = kwargs.pop('formid')
+        kwargs['prefix'] = "option-%s" % formid
+        super(OptionForm, self).__init__(*args, **kwargs)
+
+        for key, value in extra:
+            self.fields[key] = forms.IntegerField(
+                widget=forms.TextInput(attrs={'class': 'small-input'}),
+                label=_(key),
+                initial=value,
+            )
+
+class BaseOption(models.Model):
+    poll = models.ForeignKey('BasePoll')
+
+    @property
+    def votes(self):
+        count = 0
+        for vote in Vote.objects.filter(option=self):
+            count += vote.weight
+        return weight
+
+
+class TextOption(BaseOption):
+    text = models.CharField(max_length=255)
+
+    def __unicode__(self):
+        return self.text
+
+
+class Vote(models.Model):
+    option = models.ForeignKey(BaseOption)
+    #profile = models.ForeignKey(Profile) # TODO: we need a person+ here
+    weight = models.IntegerField(default=1)
+    value = models.CharField(max_length=255, null=True)
+
+
+class BasePoll(models.Model):
     description = models.TextField(null=True, blank=True, verbose_name = _("Description"))
     votescast = models.IntegerField(null=True, blank=True, verbose_name = _("Votes cast"))
     votesinvalid = models.IntegerField(null=True, blank=True, verbose_name = _("Votes invalid"))
-    published = models.BooleanField(default=False)
 
-    def add_option(self, option):
+    option_class = TextOption
-        self.save()
+    vote_values = [_('votes')]
-        optionc = Option()
-        optionc.poll = self
-        if isinstance(option, Application):
-            optionc.application = option
-        elif isinstance(option, Profile):
-            optionc.user = option
-        else:
-            optionc.text = str(option)
-        optionc.save()
-        return optionc
 
-    @property
+    def set_options(self, options_data):
-    def votescastf(self):
+        for option_data in options_data:
-        if self.votescast == -2:
+            option = self.option_class(**option_data)
-            return _('undocumented')
+            option.poll = self
-        elif self.votescast:
+            option.save()
-            return self.votescast
-        return '0'
-
-    @property
-    def votesinvalidf(self):
-        if self.votesinvalid == -2:
-            return _('undocumented')
-        elif self.votesinvalid:
-            if self.votescast > 0:
-                percentage = round(float(self.votesinvalid) / float(self.votescast) * 100,1)
-                invalid = "%s (%s %%)" % (str(self.votesinvalid), str(percentage))
-                return invalid
-            return self.votesinvalid
-        return '0'
-
-    def has_vote(self):
-        for option in self.options:
-            if option.voteyes or option.voteno or option.voteundesided:
-                return True
-        return False
 
     def get_options(self):
-        return self.option_set.all()
+        return self.get_option_class().objects.filter(poll=self)
 
-    @property
+    def get_option_class(self):
-    def options(self):
+        return self.option_class
-        return self.option_set.all()
 
-    @property
+    def get_vote_values(self):
-    def options_values(self):
+        return self.vote_values
-        return [option.value for option in self.options]
 
-    def set_published(self, published=True):
+    def set_form_values(self, option, data):
-        """
+        for value in self.get_vote_values():
-        Changes the published-status of the poll.
+            try:
-        """
+                vote = Vote.objects.filter(option=option).get(value=value)
-        self.published = published
+            except Vote.DoesNotExist:
-        self.save()
+                vote = Vote(option=option, value=value)
-
+            vote.weight = data[value]
-    @property
+            vote.save()
-    def count_ballots(self):
-        if self.application:
-            return Poll.objects.filter(application=self.application).count()
-        if self.assignment:
-            return Poll.objects.filter(assignment=self.assignment).count()
-        return None
-
-    @property
-    def ballot(self):
-        if self.application:
-            counter = 0
-            for poll in Poll.objects.filter(application=self.application):
-                counter = counter + 1
-                if self == poll:
-                    return counter
-        if self.assignment:
-            counter = 0
-            for poll in Poll.objects.filter(assignment=self.assignment):
-                counter = counter + 1
-                if self == poll:
-                    return counter
-        return None
-
-    @models.permalink
-    def get_absolute_url(self, link='view'):
-        if self.application:
-            if link == 'view':
-                return ('application_poll_view', [str(self.id), 0])
-            if link == 'delete':
-                return ('application_poll_delete', [str(self.id)])
-        if self.assignment:
-            if link == 'view':
-                return ('assignment_poll_view', [str(self.id), 0])
-            if link == 'delete':
-                return ('assignment_poll_delete', [str(self.id)])
-        if link == 'view':
-            return ('poll_view', [str(self.id)])
-        if link == 'delete':
-            return ('poll_delete', [str(self.id)])
-
-    def __unicode__(self):
-        if self.application:
-            return self.application.title
-        if self.assignment:
-            return self.assignment.name
 
 
-class Option(models.Model):
+    def get_form_values(self, option_id):
-    text = models.CharField(max_length=100, null=True, blank=True, verbose_name = _("Text"))
+        values = []
-    user = models.ForeignKey(Profile, null=True, blank=True, verbose_name = _("Participant"))
+        for value in self.get_vote_values():
-    application = models.ForeignKey(Application, null=True, blank=True, verbose_name = _("Application"))
+            try:
-    poll = models.ForeignKey(Poll, verbose_name = _("Poll"))
+                vote = Vote.objects.filter(option=option_id).get(value=value)
-    voteyes = models.IntegerField(null=True, blank=True)
+                weight = vote.weight
-    voteno = models.IntegerField(null=True, blank=True)
+            except Vote.DoesNotExist:
-    voteundesided = models.IntegerField(null=True, blank=True)
+                weight = None
+            values.append((value, weight))
+        return values
 
-    @property
+    def get_vote_form(self, **kwargs):
-    def yes(self):
+        return OptionForm(extra=self.get_form_values(kwargs['formid']), **kwargs)
-        if self.voteyes == -1:
-            return _('majority')
-        if self.voteyes == -2:
-            return _('undocumented')
-        if self.voteyes:
-            if self.poll.votescast > 0 and self.voteyes > 0:
-                percentage = round(float(self.voteyes) / float(self.poll.votescast) * 100,1)
-                return "%s (%s %%)" % (str(self.voteyes), str(percentage))
-            return self.voteyes
-        return '0'
 
-    @property
+    def get_vote_forms(self, **kwargs):
-    def no(self):
+        forms = []
-        if self.voteno == -1:
+        for option in self.get_options():
-            return _('majority')
+            form = self.get_vote_form(formid=option.id, **kwargs)
-        if self.voteno == -2:
+            form.option = option
-            return _('undocumented')
+            forms.append(form)
-        if self.voteno:
-            if self.poll.votescast > 0 and self.voteno > 0:
-                percentage = round(float(self.voteno) / float(self.poll.votescast) * 100,1)
-                return "%s (%s %%)" % (str(self.voteno), str(percentage))
-            return self.voteno
-        return '0'
 
-    @property
+        return forms
-    def undesided(self):
-        if self.voteundesided == -1:
-            return _('majority')
-        if self.voteundesided == -2:
-            return _('undocumented')
-        if self.voteundesided:
-            if self.poll.votescast > 0 and self.voteundesided > 0:
-                percentage = round(float(self.voteundesided) / float(self.poll.votescast) * 100,1)
-                return "%s (%s %%)" % (str(self.voteundesided), str(percentage))
-            return self.voteundesided
-        return '0'
 
-    @property
-    def value(self):
-        if self.text != "" and self.text is not None:
-            return self.text
-        if self.user is not None:
-            return self.user
-        if self.application is not None:
-            return self.application
-        return None
 
-    def __unicode__(self):
+class PollFormView(TemplateView):
-        if self.value:
+    template_name = 'poll/poll.html'
-            return unicode(self.value)
+    poll_argument = 'poll_id'
-        return _("No options")
+
+    def set_poll(self, poll_id):
+        poll_id = poll_id
+        self.poll = self.poll_class.objects.get(pk=poll_id)
+        self.poll.vote_values = self.vote_values
+
+    def get_context_data(self, **kwargs):
+        context = super(PollFormView, self).get_context_data(**kwargs)
+        self.set_poll(self.kwargs['poll_id'])
+        context['poll'] = self.poll
+        if not 'forms' in context:
+            context['forms'] = context['poll'].get_vote_forms()
+        return context
+
+    def get_success_url(self):
+        return self.success_url
+
+    def post(self, request, *args, **kwargs):
+        context = self.get_context_data(**kwargs)
+        forms = self.poll.get_vote_forms(data=self.request.POST)
+        error = False
+        for form in forms:
+            if not form.is_valid():
+                error = True
+        if error:
+            return self.render_to_response(self.get_context_data(forms=forms))
+
+        for form in forms:
+            data = {}
+            for value in self.poll.vote_values:
+                data[value] = form.cleaned_data[value]
+            print data
+            self.poll.set_form_values(form.option, data)
+        return HttpResponseRedirect(self.get_success_url())
+

openslides/utils/pdf.py

@@ -36,7 +36,7 @@ from openslides.agenda.models import Item
 from openslides.agenda.api import children_list
 from openslides.application.models import Application
 from openslides.assignment.models import Assignment
-from openslides.poll.models import Poll, Option
+#from openslides.poll.models import Poll, Option
 from openslides.participant.models import Profile
 from openslides.system.api import config_get
 from openslides.settings import SITE_ROOT
@@ -343,7 +343,7 @@ def get_application(application, story):
     else:
         story.append(Paragraph(_("Application No."), stylesheet['Heading1']))
 
-    
+
     # submitter
     cell1a = []
     cell1a.append(Spacer(0,0.2*cm))
@@ -357,7 +357,7 @@ def get_application(application, story):
         cell1b.append(Spacer(0,0.2*cm))
     else:
         cell1b.append(Paragraph(unicode(application.submitter.profile), stylesheet['Normal']))
-    
+
     # supporters
     cell2a = []
     cell2a.append(Paragraph("<font name='Ubuntu-Bold'>%s:</font><seqreset id='counter'>" % _("Supporters"), stylesheet['Heading4']))
@@ -368,7 +368,7 @@ def get_application(application, story):
         for x in range(0,application.missing_supporters):
             cell2b.append(Paragraph("<seq id='counter'/>.&nbsp; __________________________________________",stylesheet['Signaturefield']))
     cell2b.append(Spacer(0,0.2*cm))
-    
+
     # status
     note = ""
     for n in application.notes:
@@ -389,7 +389,7 @@ def get_application(application, story):
     data.append([cell1a,cell1b])
     data.append([cell2a,cell2b])
     data.append([cell3a,cell3b])
-    
+
     # voting results
     if len(application.results) > 0:
         cell4a = []
@@ -412,7 +412,7 @@ def get_application(application, story):
                           ]))
     story.append(t)
     story.append(Spacer(0,1*cm))
-    
+
     # title
     story.append(Paragraph(application.title, stylesheet['Heading3']))
     # text
@@ -431,7 +431,7 @@ def print_application(request, application_id=None):
     doc = SimpleDocTemplate(response)
     doc.title = None
     story = []
-    
+
     if application_id is None:  #print all applications
         title = config_get("application_pdf_title")
         story.append(Paragraph(title, stylesheet['Heading1']))
@@ -614,7 +614,7 @@ def get_assignment(assignment, story):
                             ('LINEBELOW',(0,-1),(-1,-1),2,colors.black),
                             ('ROWBACKGROUNDS', (0, 1), (-1, -1), (colors.white, (.9, .9, .9))),
                               ]))
-    
+
     # table
     data = []
     data.append([cell1a,cell1b])
@@ -635,7 +635,7 @@ def get_assignment(assignment, story):
     # text
     story.append(Paragraph("%s" % assignment.description.replace('\r\n','<br/>'), stylesheet['Paragraph']))
     return story
-    
+
 @permission_required('application.can_see_application')
 def print_assignment(request, assignment_id=None):
     response = HttpResponse(mimetype='application/pdf')
@@ -644,7 +644,7 @@ def print_assignment(request, assignment_id=None):
     doc = SimpleDocTemplate(response)
     doc.title = None
     story = []
-    
+
     if assignment_id is None:  #print all applications
         title = config_get("assignment_pdf_title")
         story.append(Paragraph(title, stylesheet['Heading1']))
@@ -667,7 +667,7 @@ def print_assignment(request, assignment_id=None):
 
     doc.build(story, onFirstPage=firstPage, onLaterPages=firstPage)
     return response
-    
+
 @permission_required('application.can_manage_application')
 def print_assignment_poll(request, poll_id=None):
     poll = Poll.objects.get(id=poll_id)
@@ -714,7 +714,7 @@ def print_assignment_poll(request, poll_id=None):
         rest = number % 2
         if rest:
             data.append([cell,''])
-        
+
         if len(options) <= 2:
             t=Table(data, 10.5*cm, 7.42*cm)
         elif len(options) <= 5:
@@ -742,7 +742,7 @@ def print_assignment_poll(request, poll_id=None):
         rest = number % 2
         if rest:
             data.append([cell,''])
-        
+
         if len(options) <= 4:
             t=Table(data, 10.5*cm, 7.42*cm)
         elif len(options) <= 8: