Files
pretix_cgo/src/pretix/base/exporters/answers.py
2019-05-28 09:43:21 +02:00

68 lines
2.3 KiB
Python

import os
import tempfile
from collections import OrderedDict
from zipfile import ZipFile
from django import forms
from django.dispatch import receiver
from django.utils.translation import ugettext_lazy as _
from pretix.base.models import QuestionAnswer
from ..exporter import BaseExporter
from ..signals import register_data_exporters
class AnswerFilesExporter(BaseExporter):
identifier = 'answerfiles'
verbose_name = _('Answers to file upload questions')
@property
def export_form_fields(self):
return OrderedDict(
[
('questions',
forms.ModelMultipleChoiceField(
queryset=self.event.questions.filter(type='F'),
label=_('Questions'),
widget=forms.CheckboxSelectMultiple(
attrs={'class': 'scrolling-multiple-choice'}
),
required=False
)),
]
)
def render(self, form_data: dict):
qs = QuestionAnswer.objects.filter(
orderposition__order__event=self.event,
).select_related('orderposition', 'orderposition__order', 'question')
if form_data.get('questions'):
qs = qs.filter(question__in=form_data['questions'])
with tempfile.TemporaryDirectory() as d:
any = False
with ZipFile(os.path.join(d, 'tmp.zip'), 'w') as zipf:
for i in qs:
if i.file:
i.file.open('rb')
fname = '{}-{}-{}-q{}-{}'.format(
self.event.slug.upper(),
i.orderposition.order.code,
i.orderposition.positionid,
i.question.pk,
os.path.basename(i.file.name).split('.', 1)[1]
)
any = True
zipf.writestr(fname, i.file.read())
i.file.close()
if not any:
return None
with open(os.path.join(d, 'tmp.zip'), 'rb') as zipf:
return '{}_answers.zip'.format(self.event.slug), 'application/zip', zipf.read()
@receiver(register_data_exporters, dispatch_uid="exporter_answers")
def register_anwers_export(sender, **kwargs):
return AnswerFilesExporter