sobjects/hooks.py
author Nicolas Chauvat <nicolas.chauvat@logilab.fr>
Thu, 13 Nov 2008 02:30:39 +0100
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"""various library content hooks
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:organization: Logilab
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:copyright: 2001-2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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"""
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__docformat__ = "restructuredtext en"
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from cubicweb.server.hooksmanager import Hook
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from cubicweb.server.pool import PreCommitOperation
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class AddUpdateEUserHook(Hook):
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    """ensure user logins are stripped"""
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    events = ('before_add_entity', 'before_update_entity',)
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    accepts = ('EUser',)
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    def call(self, session, entity):
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        if 'login' in entity and entity['login']:
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            entity['login'] = entity['login'].strip()
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class AutoDeleteBookmark(PreCommitOperation):
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    def precommit_event(self):
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        session = self.session
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        if not self.beid in session.query_data('pendingeids', ()):
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            if not session.unsafe_execute('Any X WHERE X bookmarked_by U, X eid %(x)s',
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                                          {'x': self.beid}, 'x'):
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                session.unsafe_execute('DELETE Bookmark X WHERE X eid %(x)s',
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                                       {'x': self.beid}, 'x')
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class DelBookmarkedByHook(Hook):
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    """ensure user logins are stripped"""
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    events = ('after_delete_relation',)
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    accepts = ('bookmarked_by',)
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    def call(self, session, subj, rtype, obj):
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        AutoDeleteBookmark(session, beid=subj)