OpenSlides/openslides/participant/api.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
openslides.participant.api
~~~~~~~~~~~~~~~~~~~~~~~~~~
Useful functions for the participant app.
:copyright: 20112013 by OpenSlides team, see AUTHORS.
:license: GNU GPL, see LICENSE for more details.
"""
from random import choice
import csv
from django.db import transaction
from django.utils.translation import ugettext as _
from openslides.utils import csv_ext
from openslides.participant.models import User, Group
def gen_password():
"""
generates a random passwort.
"""
chars = "abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789"
size = 8
return ''.join([choice(chars) for i in range(size)])
def gen_username(first_name, last_name):
"""
generates the username for new users.
"""
testname = "%s %s" % (first_name.strip(), last_name.strip())
try:
User.objects.get(username=testname)
except User.DoesNotExist:
return testname
i = 0
while True:
i += 1
testname = "%s %s %s" % (first_name, last_name, i)
try:
User.objects.get(username=testname)
except User.DoesNotExist:
return testname
def import_users(csv_file):
error_messages = []
count_success = 0
try:
# check for valid encoding (will raise UnicodeDecodeError if not)
csv_file.read().decode('utf-8')
csv_file.seek(0)
with transaction.commit_on_success():
dialect = csv.Sniffer().sniff(csv_file.readline())
dialect = csv_ext.patchup(dialect)
csv_file.seek(0)
for (line_no, line) in enumerate(csv.reader(csv_file,
dialect=dialect)):
if line_no:
try:
(first_name, last_name, gender, structure_level, type, committee, comment) = line[:7]
except ValueError:
error_messages.append(_('Ignoring malformed line %d in import file.') % (line_no + 1))
continue
user = User()
user.last_name = last_name
user.first_name = first_name
user.username = gen_username(first_name, last_name)
user.gender = gender
user.structure_level = structure_level
user.type = type
user.committee = committee
user.comment = comment
user.default_password = gen_password()
user.save()
user.reset_password()
count_success += 1
except csv.Error:
error_messages.appen(_('Import aborted because of severe errors in the input file.'))
except UnicodeDecodeError:
error_messages.appen(_('Import file has wrong character encoding, only UTF-8 is supported!'))
return (count_success, error_messages)
def get_registered_group():
"""
Returns the Group 'Registered'. Upper and lower case is possible.
"""
return Group.objects.get(name__iexact='Registered')