[req,web] Make it possible to handle page language from URL prefix
Adding a short language prefix to URL (like "/en" or "/fr") changes the
language the pages are displayed in. This prefix is kept during navigation.
This way it is not necessary to do language negotiation, nor to use user
preferences to determine which language to apply.
This behavior is controlled through a new configuration option
"language-mode", which replaces "language-negociation" option and which values
may be "http-negotiation", "url-prefix" or "" (to disable language setting and
force using "ui.language" property). Migration from previous option is not
handled because I could not manage to have it working (users will get prompted
with the configuration file diff anyways).
Add some tests checking various scenarios.
Closes #15743487
# copyright 2003-2011 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/>.
"""base xml and rss views"""
from cubicweb import _
from six.moves import range
from yams import xy
from cubicweb.schema import VIRTUAL_RTYPES
from cubicweb.view import EntityView
from cubicweb.web.views.xmlrss import SERIALIZERS
try:
import rdflib
except ImportError:
rdflib = None
if rdflib is not None:
RDF = rdflib.Namespace('http://www.w3.org/1999/02/22-rdf-syntax-ns#')
CW = rdflib.Namespace('http://ns.cubicweb.org/cubicweb/0.0/')
from rdflib import Literal, URIRef, Namespace
def urijoin(item):
base, ext = item
return URIRef(Namespace(base)[ext])
SKIP_RTYPES = VIRTUAL_RTYPES | set(['cwuri', 'is', 'is_instance_of'])
class RDFView(EntityView):
"""rdf view for entities"""
__regid__ = 'rdf'
title = _('rdf export')
templatable = False
binary = True
format = 'xml'
content_type = 'text/xml' # +rdf
def call(self):
graph = rdflib.Graph()
graph.bind('cw', CW)
for prefix, xmlns in xy.XY.prefixes.items():
graph.bind(prefix, rdflib.Namespace(xmlns))
for i in range(self.cw_rset.rowcount):
entity = self.cw_rset.complete_entity(i, 0)
self.entity2graph(graph, entity)
self.w(graph.serialize(format=self.format))
def entity_call(self, entity):
self.call()
def entity2graph(self, graph, entity):
cwuri = URIRef(entity.cwuri)
add = graph.add
add( (cwuri, RDF.type, CW[entity.e_schema.type]) )
try:
for item in xy.xeq(entity.e_schema.type):
add( (cwuri, RDF.type, urijoin(item)) )
except xy.UnsupportedVocabulary:
pass
for rschema, eschemas, role in entity.e_schema.relation_definitions('relation'):
rtype = rschema.type
if rtype in SKIP_RTYPES or rtype.endswith('_permission'):
continue
for eschema in eschemas:
if eschema.final:
try:
value = entity.cw_attr_cache[rtype]
except KeyError:
continue # assuming rtype is Bytes
if value is not None:
add( (cwuri, CW[rtype], Literal(value)) )
try:
for item in xy.xeq('%s %s' % (entity.e_schema.type, rtype)):
add( (cwuri, urijoin(item[1]), Literal(value)) )
except xy.UnsupportedVocabulary:
pass
else:
for related in entity.related(rtype, role, entities=True, safe=True):
if role == 'subject':
add( (cwuri, CW[rtype], URIRef(related.cwuri)) )
try:
for item in xy.xeq('%s %s' % (entity.e_schema.type, rtype)):
add( (cwuri, urijoin(item[1]), URIRef(related.cwuri)) )
except xy.UnsupportedVocabulary:
pass
else:
add( (URIRef(related.cwuri), CW[rtype], cwuri) )
class RDFN3View(RDFView):
__regid__ = 'n3rdf'
format = 'n3'
content_type = 'text/n3'