fix optimisation with super session that may lead to integrity loss
at some point I've decided to stop ensuring ?1 cardinality was respected
when adding a new relation using a super session, to avoid the cost of
the delete query. That was yet discussable because it introduced unexpected
difference between execute and unsafe_execute, which is imo not worth it.
Also, now that rql() in migration script default to unsafe_execute, we
definitly don't want that implicit behaviour change (which already cause
bug when for instance adding another default workflow for an entity type:
without that fix we end up with *two* default workflows while the schema
tells we can have only one.
IMO we should go to the direction that super session skip all security
check, but nothing else, unless explicitly asked.
"""Set of views allowing edition of entities/relations using ajax
:organization: Logilab
:copyright: 2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
from cubicweb import role
from cubicweb.selectors import match_form_params, match_kwargs
from cubicweb.web.box import EditRelationBoxTemplate
class AddRelationView(EditRelationBoxTemplate):
"""base class for view which let add entities linked
by a given relation
subclasses should define at least id, rtype and target
class attributes.
"""
__registry__ = 'views'
__regid__ = 'xaddrelation'
__select__ = (match_form_params('rtype', 'target')
| match_kwargs('rtype', 'target'))
cw_property_defs = {} # don't want to inherit this from Box
expected_kwargs = form_params = ('rtype', 'target')
build_js = EditRelationBoxTemplate.build_reload_js_call
def cell_call(self, row, col, rtype=None, target=None, etype=None):
self.rtype = rtype or self._cw.form['rtype']
self.target = target or self._cw.form['target']
self.etype = etype or self._cw.form.get('etype')
entity = self.cw_rset.get_entity(row, col)
rschema = self._cw.vreg.schema.rschema(self.rtype)
if not self.etype:
if self.target == 'object':
etypes = rschema.objects(entity.e_schema)
else:
etypes = rschema.subjects(entity.e_schema)
if len(etypes) == 1:
self.etype = etypes[0]
self.w(u'<div id="%s">' % self.__regid__)
self.w(u'<h1>%s</h1>' % self._cw._('relation %(relname)s of %(ent)s')
% {'relname': rschema.display_name(self._cw, role(self)),
'ent': entity.view('incontext')})
self.w(u'<ul>')
for boxitem in self.unrelated_boxitems(entity):
boxitem.render(self.w)
self.w(u'</ul></div>')
def unrelated_entities(self, entity):
"""returns the list of unrelated entities
if etype is not defined on the Box's class, the default
behaviour is to use the entity's appropraite vocabulary function
"""
# use entity.unrelated if we've been asked for a particular etype
if getattr(self, 'etype', None):
rset = entity.unrelated(self.rtype, self.etype, role(self),
ordermethod='fetch_order')
self.pagination(self._cw, rset, w=self.w)
return rset.entities()
# in other cases, use vocabulary functions
entities = []
# XXX to update for 3.2
for _, eid in entity.vocabulary(self.rtype, role(self)):
if eid is not None:
rset = self._cw.eid_rset(eid)
entities.append(rset.get_entity(0, 0))
return entities