def post(self):
"""Create new resource and get response data.
For :class:`adhocracy_core.interfaces.IItemVersion`:
If a `new version` is already created in this transaction we don't want
to create a new one. Instead we modify the existing one.
This is needed to make :class:`adhocray_core.rest.batchview.BatchView`
work.
"""
metric = self._get_post_metric_name()
with statsd_timer(metric, rate=1, registry=self.registry):
if is_batchmode(self.request) and self._creating_new_version():
last = self.registry.content.get_sheet_field(self.context,
ITags,
'LAST')
if is_created_in_current_transaction(last, self.registry):
self._update_version(last)
resource = last
else:
resource = self._create()
else:
resource = self._create()
cstruct = self.build_post_response(resource)
return cstruct
def validate_linear_history(node, value):
batchmode = is_batchmode(request)
last = registry.content.get_sheet_field(context, ITags, 'LAST')
if batchmode and is_created_in_current_transaction(last, registry):
# In batchmode there is only one new last version created that is
# updated by the following versions. See
# func:`adhocracy_core.rest.views.IItemRestView.post` and
# func:`adhocracy_core.resource.subscriber` for more information.
return
_assert_follows_last_version(node, value, last)
def validate_linear_history(node, value):
batchmode = is_batchmode(request)
last = registry.content.get_sheet_field(context, ITags, 'LAST')
if batchmode and is_created_in_current_transaction(last, registry):
# In batchmode there is only one new last version created that is
# updated by the following versions. See
# func:`adhocracy_core.rest.views.IItemRestView.post` and
# func:`adhocracy_core.resource.subscriber` for more information.
return
_assert_follows_last_version(node, value, last)
def validate_linear_history_no_fork(node: colander.SchemaNode, value: list):
"""Validate lineare history (no fork) for the follows field.
:param:'value': list of one 'follows' resource.
:raises colander.Invalid: if value does not reference the last version.
"""
from adhocracy_core.sheets.tags import ITags # prevent circle dependencies
context = node.bindings['context']
request = node.bindings['request']
registry = node.bindings['registry']
batchmode = is_batchmode(request)
last = get_sheet_field(context, ITags, 'LAST', registry=registry)
if batchmode and is_created_in_current_transaction(last, registry):
# In batchmode there is only one new last version created that is
# updated by the following versions. See
# func:`adhocracy_core.rest.views.IItemRestView.post` and
# func:`adhocracy_core.resource.subscriber` for more information.
return
_assert_follows_last_version(node, value, last)
