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.
"""the facets box and some basic facets
:organization: Logilab
:copyright: 2008-2010 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 simplejson import dumps
from logilab.mtconverter import xml_escape
from cubicweb.appobject import objectify_selector
from cubicweb.selectors import (non_final_entity, multi_lines_rset,
match_context_prop, yes, relation_possible)
from cubicweb.web.box import BoxTemplate
from cubicweb.web.facet import (AbstractFacet, FacetStringWidget, RelationFacet,
prepare_facets_rqlst, filter_hiddens, _cleanup_rqlst,
_prepare_vocabulary_rqlst)
@objectify_selector
def contextview_selector(cls, req, rset=None, row=None, col=None, view=None,
**kwargs):
if view and getattr(view, 'filter_box_context_info', lambda: None)():
return 1
return 0
class FilterBox(BoxTemplate):
"""filter results of a query"""
__regid__ = 'filter_box'
__select__ = (((non_final_entity() & multi_lines_rset())
| contextview_selector()
) & match_context_prop())
context = 'left'
title = _('boxes_filter_box')
visible = True # functionality provided by the search box by default
order = 1
roundcorners = True
needs_css = 'cubicweb.facets.css'
needs_js = ('cubicweb.ajax.js', 'cubicweb.facets.js')
bk_linkbox_template = u'<div class="facetTitle">%s</div>'
def facetargs(self):
"""this method returns the list of extra arguments that should
be used by the facet
"""
return {}
def _get_context(self, view):
context = getattr(view, 'filter_box_context_info', lambda: None)()
if context:
rset, vid, divid, paginate = context
else:
rset = self.cw_rset
vid, divid = None, 'pageContent'
paginate = view and view.paginable
return rset, vid, divid, paginate
def call(self, view=None):
req = self._cw
req.add_js( self.needs_js )
req.add_css( self.needs_css)
if self.roundcorners:
req.html_headers.add_onload('jQuery(".facet").corner("tl br 10px");')
rset, vid, divid, paginate = self._get_context(view)
if rset.rowcount < 2: # XXX done by selectors, though maybe necessary when rset has been hijacked
return
rqlst = self.cw_rset.syntax_tree()
# union not yet supported
if len(rqlst.children) != 1:
return ()
rqlst = rqlst.copy()
req.vreg.rqlhelper.annotate(rqlst)
mainvar, baserql = prepare_facets_rqlst(rqlst, rset.args)
widgets = []
for facet in self.get_facets(rset, rqlst.children[0], mainvar):
if facet.cw_propval('visible'):
wdg = facet.get_widget()
if wdg is not None:
widgets.append(wdg)
if not widgets:
return
if vid is None:
vid = req.form.get('vid')
if self.bk_linkbox_template:
self.display_bookmark_link(rset)
w = self.w
w(u'<form method="post" id="%sForm" cubicweb:facetargs="%s" action="">' % (
divid, xml_escape(dumps([divid, vid, paginate, self.facetargs()]))))
w(u'<fieldset>')
hiddens = {'facets': ','.join(wdg.facet.__regid__ for wdg in widgets),
'baserql': baserql}
for param in ('subvid', 'vtitle'):
if param in req.form:
hiddens[param] = req.form[param]
filter_hiddens(w, **hiddens)
for wdg in widgets:
wdg.render(w=self.w)
w(u'</fieldset>\n</form>\n')
def display_bookmark_link(self, rset):
eschema = self._cw.vreg.schema.eschema('Bookmark')
if eschema.has_perm(self._cw, 'add'):
bk_path = 'view?rql=%s' % rset.printable_rql()
bk_title = self._cw._('my custom search')
linkto = 'bookmarked_by:%s:subject' % self._cw.user.eid
bk_add_url = self._cw.build_url('add/Bookmark', path=bk_path, title=bk_title, __linkto=linkto)
bk_base_url = self._cw.build_url('add/Bookmark', title=bk_title, __linkto=linkto)
bk_link = u'<a cubicweb:target="%s" id="facetBkLink" href="%s">%s</a>' % (
xml_escape(bk_base_url),
xml_escape(bk_add_url),
self._cw._('bookmark this search'))
self.w(self.bk_linkbox_template % bk_link)
def get_facets(self, rset, rqlst, mainvar):
return self._cw.vreg['facets'].poss_visible_objects(
self._cw, rset=rset, rqlst=rqlst,
context='facetbox', filtered_variable=mainvar)
# facets ######################################################################
class CreatedByFacet(RelationFacet):
__regid__ = 'created_by-facet'
rtype = 'created_by'
target_attr = 'login'
class InGroupFacet(RelationFacet):
__regid__ = 'in_group-facet'
rtype = 'in_group'
target_attr = 'name'
class InStateFacet(RelationFacet):
__regid__ = 'in_state-facet'
rtype = 'in_state'
target_attr = 'name'
# inherit from RelationFacet to benefit from its possible_values implementation
class ETypeFacet(RelationFacet):
__regid__ = 'etype-facet'
__select__ = yes()
order = 1
rtype = 'is'
target_attr = 'name'
@property
def title(self):
return self._cw._('entity type')
def vocabulary(self):
"""return vocabulary for this facet, eg a list of 2-uple (label, value)
"""
etypes = self.cw_rset.column_types(0)
return sorted((self._cw._(etype), etype) for etype in etypes)
def add_rql_restrictions(self):
"""add restriction for this facet into the rql syntax tree"""
value = self._cw.form.get(self.__regid__)
if not value:
return
self.rqlst.add_type_restriction(self.filtered_variable, value)
def possible_values(self):
"""return a list of possible values (as string since it's used to
compare to a form value in javascript) for this facet
"""
rqlst = self.rqlst
rqlst.save_state()
try:
_cleanup_rqlst(rqlst, self.filtered_variable)
etype_var = _prepare_vocabulary_rqlst(rqlst, self.filtered_variable, self.rtype, self.role)
attrvar = rqlst.make_variable()
rqlst.add_selected(attrvar)
rqlst.add_relation(etype_var, 'name', attrvar)
return [etype for _, etype in self.rqlexec(rqlst.as_string())]
finally:
rqlst.recover()
class HasTextFacet(AbstractFacet):
__select__ = relation_possible('has_text', 'subject') & match_context_prop()
__regid__ = 'has_text-facet'
rtype = 'has_text'
role = 'subject'
order = 0
@property
def title(self):
return self._cw._('has_text')
def get_widget(self):
"""return the widget instance to use to display this facet
default implentation expects a .vocabulary method on the facet and
return a combobox displaying this vocabulary
"""
return FacetStringWidget(self)
def add_rql_restrictions(self):
"""add restriction for this facet into the rql syntax tree"""
value = self._cw.form.get(self.__regid__)
if not value:
return
self.rqlst.add_constant_restriction(self.filtered_variable, 'has_text', value, 'String')