[web/views] avoid propagation of NoSelectableObject in some case of inlined relations / permissions
When selecting an inlined creation form, we should catch the
NoSelectable exception that will be raised if the user cannot add
entities of the target type (this is not and cannot be verified earlier)
or if some other custom selector prevents the form from being selected.
Closes #6510921
# copyright 2003-2010 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/>.
"""some basic stuff to build dot generated graph images"""
__docformat__ = "restructuredtext en"
_ = unicode
import tempfile
import os
import codecs
from logilab.mtconverter import xml_escape
from logilab.common.graph import GraphGenerator, DotBackend
from cubicweb.view import EntityView
from cubicweb.utils import make_uid
class DotGraphView(EntityView):
__abstract__ = True
backend_class = DotBackend
backend_kwargs = {'ratio': 'compress', 'size': '30,10'}
def cell_call(self, row, col):
if 'MSIE 8' in self._cw.useragent():
return
entity = self.cw_rset.get_entity(row, col)
visitor = self.build_visitor(entity)
prophdlr = self.build_dotpropshandler()
graphname = 'dotgraph%s' % str(entity.eid)
generator = GraphGenerator(self.backend_class(graphname, None,
**self.backend_kwargs))
# image file
fd, tmpfile = tempfile.mkstemp('.svg')
os.close(fd)
generator.generate(visitor, prophdlr, tmpfile)
with codecs.open(tmpfile, 'rb', encoding='utf-8') as svgfile:
self.w(svgfile.read())
def build_visitor(self, entity):
raise NotImplementedError
def build_dotpropshandler(self):
return DotPropsHandler(self._cw)
class DotPropsHandler(object):
def __init__(self, req):
self._ = req._
def node_properties(self, entity):
"""return default DOT drawing options for a state or transition"""
return {'label': entity.dc_long_title(),
'href': entity.absolute_url(),
'fontname': 'Courier', 'fontsize': 10, 'shape':'box',
}
def edge_properties(self, transition, fromstate, tostate):
return {'label': '', 'dir': 'forward',
'color': 'black', 'style': 'filled'}