OpenSlides/openslides/participant/csv_import.py

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import csv
from django.db import transaction
from django.utils.translation import ugettext as _
from openslides.utils import csv_ext
from openslides.utils.utils import html_strong
from .api import gen_password, gen_username
from .models import Group, User
def import_users(csvfile):
error_messages = []
count_success = 0
try:
# check for valid encoding (will raise UnicodeDecodeError if not)
csvfile.read().decode('utf-8')
csvfile.seek(0)
with transaction.commit_on_success():
dialect = csv.Sniffer().sniff(csvfile.readline().decode('utf-8'))
dialect = csv_ext.patchup(dialect)
csvfile.seek(0)
for (line_no, line) in enumerate(csv.reader(
(line.decode('utf8') for line in csvfile.readlines()), dialect=dialect)):
if line_no:
try:
(title, first_name, last_name, gender, email, groups,
structure_level, committee, about_me, comment, is_active) = line[:11]
except ValueError:
error_messages.append(_('Ignoring malformed line %d in import file.') % (line_no + 1))
continue
if not first_name and not last_name:
error_messages.append(_("In line %d you have to provide either 'first_name' or 'last_name'.") % (line_no + 1))
continue
user = User()
user.title = title
user.last_name = last_name
user.first_name = first_name
user.username = gen_username(first_name, last_name)
user.gender = gender
user.email = email
user.structure_level = structure_level
user.committee = committee
user.about_me = about_me
user.comment = comment
if is_active == '1':
user.is_active = True
else:
user.is_active = False
user.default_password = gen_password()
user.save()
for groupid in groups:
try:
if groupid != ",":
Group.objects.get(pk=groupid).user_set.add(user)
except ValueError:
error_messages.append(_('Ignoring malformed group id in line %d.') % (line_no + 1))
continue
except Group.DoesNotExist:
error_messages.append(_('Group id %(id)s does not exists (line %(line)d).') % {'id': groupid, 'line': line_no + 1})
continue
user.reset_password()
count_success += 1
except csv.Error:
error_messages.append(_('Import aborted because of severe errors in the input file.'))
except UnicodeDecodeError:
error_messages.append(_('Import file has wrong character encoding, only UTF-8 is supported!'))
# Build final success message
if count_success:
success_message = _('%d new participants were successfully imported.') % count_success
else:
success_message = ''
# Build final error message with all error items (one bullet point for each csv line)
full_error_message = ''
if error_messages:
full_error_message = "%s <ul>" % html_strong(_("Errors"))
for error in error_messages:
full_error_message += "<li>%s</li>" % error
full_error_message += "</ul>"
return success_message, '', full_error_message