def approve_version(self):
"""Aprove the current unapproved version.
"""
# self._update_publication_status()
if self._unapproved_version == empty_version:
raise VersioningError(
_('There is no unapproved version to approve.'), self)
if self._approved_version != empty_version:
raise VersioningError(_('There already is an approved version.'),
self)
if self._unapproved_version[1] is None:
raise VersioningError(
_('Cannot approve version without publication datetime.'),
self)
self._approved_version = self._unapproved_version
self._unapproved_version = empty_version
version = self._getOb(self._approved_version[0])
status = IRequestForApprovalStatus(version)
status.validate()
notify(events.ContentApprovedEvent(version, status))
# We may be published now
self._update_publication_status()
