hooks/bookmark.py
author Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
Fri, 19 Mar 2010 19:21:31 +0100
changeset 4964 d9e8af8a7a42
parent 4307 7fba9c34c88f
child 5421 8167de96c523
permissions -rw-r--r--
[source] implement storages right in the source rather than in hooks The problem is that Storage objects will most probably change entity's dictionary so that values are correctly set before the source's corresponding method (e.g. entity_added()) is called. For instance, the BFSFileStorage will change the original binary data and replace it with the destination file path in order to store the file path in the database. This change must be local to the source in order not to impact other hooks or attribute access during the transaction, the whole idea being that the same application code should work exactly the same whether or not a BFSStorage is used or not.
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"""bookmark related hooks
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:organization: Logilab
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
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"""
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__docformat__ = "restructuredtext en"
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from cubicweb.server import hook
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class AutoDeleteBookmarkOp(hook.Operation):
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    bookmark = None # make pylint happy
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    def precommit_event(self):
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        if not self.session.deleted_in_transaction(self.bookmark.eid):
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            if not self.bookmark.bookmarked_by:
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                self.bookmark.delete()
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class DelBookmarkedByHook(hook.Hook):
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    """ensure user logins are stripped"""
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    __regid__ = 'autodelbookmark'
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    __select__ = hook.Hook.__select__ & hook.match_rtype('bookmarked_by',)
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    category = 'bookmark'
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    events = ('after_delete_relation',)
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    def __call__(self):
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        AutoDeleteBookmarkOp(self._cw,
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                             bookmark=self._cw.entity_from_eid(self.eidfrom))