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Merge pull request #3134 from normanjaeckel/IdentifierWahnsinn

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Fixed bug when creating multiple motions at once (problem with unique…
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Norman Jäckel 2017-03-23 23:23:40 +01:00 committed by GitHub
commit e93a2f9f8e
1 changed files with 29 additions and 7 deletions
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32
openslides/motions/models.py
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@ -1,7 +1,7 @@
from django.conf import settings
from django.contrib.contenttypes.fields import GenericRelation
from django.core.exceptions import ImproperlyConfigured
from django.db import models
from django.db import IntegrityError, models, transaction
from django.db.models import Max
from django.utils import formats, timezone
from django.utils.translation import ugettext as _
@ -226,8 +226,21 @@ class Motion(RESTModelMixin, models.Model):
if not self.identifier and isinstance(self.identifier, str):
self.identifier = None
# Try to save the motion until it succeeds with a correct identifier.
while True:
try:
# Always skip autoupdate. Maybe we run it later in this method.
with transaction.atomic():
super(Motion, self).save(skip_autoupdate=True, *args, **kwargs)
except IntegrityError:
# Identifier is already used. Calculate a new one and try again.
self.identifier_number, self.identifier = self.increment_identifier_number(
self.identifier_number,
self._identifier_prefix,
)
else:
# Save was successful. End loop.
break
if 'update_fields' in kwargs:
# Do not save the version data if only some motion fields are updated.
@ -340,17 +353,26 @@ class Motion(RESTModelMixin, models.Model):
prefix = '%s' % self.category.prefix
else:
prefix = '%s ' % self.category.prefix
self._identifier_prefix = prefix
# Calculate new identifier.
number, identifier = self.increment_identifier_number(number, prefix)
# Set identifier and identifier_number.
self.identifier = identifier
self.identifier_number = number
def increment_identifier_number(self, number, prefix):
"""
Helper method. It increments the number until a free identifier
number is found. Returns new number and identifier.
"""
number += 1
identifier = '%s%s' % (prefix, self.extend_identifier_number(number))
while Motion.objects.filter(identifier=identifier).exists():
number += 1
identifier = '%s%s' % (prefix, self.extend_identifier_number(number))
# Set identifier and identifier_number.
self.identifier = identifier
self.identifier_number = number
return number, identifier
def extend_identifier_number(self, number):
"""