[inlined form field] fix regression introduced in 3.16.4/570208f74a84. Closes #3064653
In the above changeset, we changed ordered entities to be edited according to
mandatory inlined constraints, though this leads to unpredictable order in
cases where there are no constraint. This leads to case where inlined relation
field may think there is no value related to a mandatory relation, while this
is simply because there is a value specified but to an entity that will be
created later (together with the relation).
To fix this, we've to use the fact that the RelationField.process_form_value
return None in cases where there is some entity to be created, while an empty
set when there are no linked entity. The new no_value() method allows to
differentiate between those different notion of 'no-value'.
# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
from cubicweb.web import Redirect
from cubicweb.web.application import CubicWebPublisher
# proof of concept : monkey patch handle method so that if we are in an
# anonymous session and __fblogin is found is req.form, the user with the
# given login is created if necessary and then a session is opened for that
# user
# NOTE: this require "cookie" authentication mode
def auto_login_handle_request(self, req, path):
if (not req.cnx or req.cnx.anonymous_connection) and req.form.get('__fblogin'):
login = password = req.form.pop('__fblogin')
self.repo.register_user(login, password)
req.form['__login'] = login
req.form['__password'] = password
if req.cnx:
req.cnx.close()
req.cnx = None
try:
self.session_handler.set_session(req)
except Redirect:
pass
assert req.user.login == login
return orig_handle(self, req, path)
orig_handle = CubicWebPublisher.main_handle_request
CubicWebPublisher.main_handle_request = auto_login_handle_request