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.
"""basic support for SIMILE's timline widgets
cf. http://code.google.com/p/simile-widgets/
: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"
import simplejson
from logilab.mtconverter import xml_escape
from cubicweb.interfaces import ICalendarable
from cubicweb.selectors import implements
from cubicweb.view import EntityView, StartupView
_ = unicode
class TimelineJsonView(EntityView):
"""generates a json file to feed Timeline.loadJSON()
NOTE: work in progress (image_url, bubbleUrl and so on
should be properties of entity classes or subviews)
"""
__regid__ = 'timeline-json'
binary = True
templatable = False
content_type = 'application/json'
__select__ = implements(ICalendarable)
date_fmt = '%Y/%m/%d'
def call(self):
events = []
for entity in self.cw_rset.entities():
event = self.build_event(entity)
if event is not None:
events.append(event)
timeline_data = {'dateTimeFormat': self.date_fmt,
'events': events}
self.w(simplejson.dumps(timeline_data))
# FIXME: those properties should be defined by the entity class
def onclick_url(self, entity):
return entity.absolute_url()
def onclick(self, entity):
url = self.onclick_url(entity)
if url:
return u"javascript: document.location.href='%s'" % url
return None
def build_event(self, entity):
"""converts `entity` into a JSON object
{'start': '1891',
'end': '1915',
'title': 'Portrait of Horace Brodsky',
'description': 'by Henri Gaudier-Brzeska, French Sculptor, 1891-1915',
'image': 'http://imagecache2.allposters.com/images/BRGPOD/102770_b.jpg',
'link': 'http://www.allposters.com/-sp/Portrait-of-Horace-Brodsky-Posters_i1584413_.htm'
}
"""
start = entity.start
stop = entity.stop
start = start or stop
if start is None and stop is None:
return None
event_data = {'start': start.strftime(self.date_fmt),
'title': xml_escape(entity.dc_title()),
'description': entity.dc_description(format='text/html'),
'link': entity.absolute_url(),
}
onclick = self.onclick(entity)
if onclick:
event_data['onclick'] = onclick
if stop:
event_data['end'] = stop.strftime(self.date_fmt)
return event_data
class TimelineViewMixIn(object):
widget_class = 'TimelineWidget'
jsfiles = ('cubicweb.timeline-bundle.js', 'cubicweb.widgets.js',
'cubicweb.timeline-ext.js', 'cubicweb.ajax.js')
def render_url(self, loadurl, tlunit=None):
tlunit = tlunit or self._cw.form.get('tlunit')
self._cw.add_js(self.jsfiles)
self._cw.add_css('timeline-bundle.css')
if tlunit:
additional = u' cubicweb:tlunit="%s"' % tlunit
else:
additional = u''
self.w(u'<div class="widget" cubicweb:wdgtype="%s" '
u'cubicweb:loadtype="auto" cubicweb:loadurl="%s" %s >' %
(self.widget_class, xml_escape(loadurl),
additional))
self.w(u'</div>')
class TimelineView(TimelineViewMixIn, EntityView):
"""builds a cubicweb timeline widget node"""
__regid__ = 'timeline'
title = _('timeline')
__select__ = implements(ICalendarable)
paginable = False
def call(self, tlunit=None):
self._cw.html_headers.define_var('Timeline_urlPrefix', self._cw.datadir_url)
rql = self.cw_rset.printable_rql()
loadurl = self._cw.build_url(rql=rql, vid='timeline-json')
self.render_url(loadurl, tlunit)
class StaticTimelineView(TimelineViewMixIn, StartupView):
"""similar to `TimelineView` but loads data from a static
JSON file instead of one after a RQL query.
"""
__regid__ = 'static-timeline'
def call(self, loadurl, tlunit=None, wdgclass=None):
self.widget_class = wdgclass or self.widget_class
self.render_url(loadurl, tlunit)