web/views/isioc.py
author Florent Cayré <florent.cayre@gmail.com>
Wed, 08 Feb 2012 14:22:48 +0100
branchstable
changeset 8199 fb5c0e60a615
parent 6864 ea95004494a2
child 8190 2a3c1b787688
permissions -rw-r--r--
[entity] fix crash when using cw_instantiate with empty related entity list; closes #2094462
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""Specific views for SIOC (Semantically-Interlinked Online Communities)
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http://sioc-project.org
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"""
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__docformat__ = "restructuredtext en"
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_ = unicode
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from logilab.mtconverter import xml_escape
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from cubicweb.view import EntityView, EntityAdapter, implements_adapter_compat
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from cubicweb.selectors import implements, adaptable
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from cubicweb.interfaces import ISiocItem, ISiocContainer
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class ISIOCItemAdapter(EntityAdapter):
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    """interface for entities which may be represented as an ISIOC items"""
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    __needs_bw_compat__ = True
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    __regid__ = 'ISIOCItem'
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    __select__ = implements(ISiocItem, warn=False) # XXX for bw compat, should be abstract
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    @implements_adapter_compat('ISIOCItem')
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    def isioc_content(self):
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        """return item's content"""
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        raise NotImplementedError
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    @implements_adapter_compat('ISIOCItem')
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    def isioc_container(self):
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        """return container entity"""
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        raise NotImplementedError
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    @implements_adapter_compat('ISIOCItem')
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    def isioc_type(self):
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        """return container type (post, BlogPost, MailMessage)"""
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        raise NotImplementedError
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    @implements_adapter_compat('ISIOCItem')
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    def isioc_replies(self):
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        """return replies items"""
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        raise NotImplementedError
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    @implements_adapter_compat('ISIOCItem')
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    def isioc_topics(self):
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        """return topics items"""
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        raise NotImplementedError
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class ISIOCContainerAdapter(EntityAdapter):
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    """interface for entities which may be represented as an ISIOC container"""
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    __needs_bw_compat__ = True
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    __regid__ = 'ISIOCContainer'
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    __select__ = implements(ISiocContainer, warn=False) # XXX for bw compat, should be abstract
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    @implements_adapter_compat('ISIOCContainer')
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    def isioc_type(self):
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        """return container type (forum, Weblog, MailingList)"""
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        raise NotImplementedError
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    @implements_adapter_compat('ISIOCContainer')
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    def isioc_items(self):
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        """return contained items"""
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        raise NotImplementedError
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class SIOCView(EntityView):
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    __regid__ = 'sioc'
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    __select__ = adaptable('ISIOCItem', 'ISIOCContainer')
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    title = _('sioc')
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    templatable = False
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    content_type = 'text/xml'
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    def call(self):
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        self.w(u'<?xml version="1.0" encoding="%s"?>\n' % self._cw.encoding)
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        self.w(u'''<rdf:RDF
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             xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
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             xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
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             xmlns:owl="http://www.w3.org/2002/07/owl#"
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             xmlns:foaf="http://xmlns.com/foaf/0.1/"
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             xmlns:sioc="http://rdfs.org/sioc/ns#"
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             xmlns:sioctype="http://rdfs.org/sioc/types#"
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             xmlns:dcterms="http://purl.org/dc/terms/">\n''')
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        for i in xrange(self.cw_rset.rowcount):
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            self.cell_call(i, 0)
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        self.w(u'</rdf:RDF>\n')
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    def cell_call(self, row, col):
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        self.wview('sioc_element', self.cw_rset, row=row, col=col)
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class SIOCContainerView(EntityView):
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    __regid__ = 'sioc_element'
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    __select__ = adaptable('ISIOCContainer')
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    templatable = False
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    content_type = 'text/xml'
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    def cell_call(self, row, col):
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        entity = self.cw_rset.complete_entity(row, col)
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        isioc = entity.cw_adapt_to('ISIOCContainer')
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        isioct = isioc.isioc_type()
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        self.w(u'<sioc:%s rdf:about="%s">\n'
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               % (isioct, xml_escape(entity.absolute_url())))
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        self.w(u'<dcterms:title>%s</dcterms:title>'
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               % xml_escape(entity.dc_title()))
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        self.w(u'<dcterms:created>%s</dcterms:created>'
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               % entity.creation_date) # XXX format
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        self.w(u'<dcterms:modified>%s</dcterms:modified>'
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               % entity.modification_date) # XXX format
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        self.w(u'<!-- FIXME : here be items -->')#entity.isioc_items()
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        self.w(u'</sioc:%s>\n' % isioct)
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class SIOCItemView(EntityView):
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    __regid__ = 'sioc_element'
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    __select__ = adaptable('ISIOCItem')
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    templatable = False
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    content_type = 'text/xml'
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    def cell_call(self, row, col):
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        entity = self.cw_rset.complete_entity(row, col)
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        isioc = entity.cw_adapt_to('ISIOCItem')
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        isioct = isioc.isioc_type()
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        self.w(u'<sioc:%s rdf:about="%s">\n'
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               % (isioct, xml_escape(entity.absolute_url())))
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        self.w(u'<dcterms:title>%s</dcterms:title>'
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               % xml_escape(entity.dc_title()))
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        self.w(u'<dcterms:created>%s</dcterms:created>'
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               % entity.creation_date) # XXX format
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        self.w(u'<dcterms:modified>%s</dcterms:modified>'
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               % entity.modification_date) # XXX format
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        content = isioc.isioc_content()
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        if content:
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            self.w(u'<sioc:content>%s</sioc:content>' % xml_escape(content))
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        container = isioc.isioc_container()
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        if container:
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            self.w(u'<sioc:has_container rdf:resource="%s"/>\n'
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                   % xml_escape(container.absolute_url()))
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        if entity.creator:
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            self.w(u'<sioc:has_creator>\n')
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            self.w(u'<sioc:User rdf:about="%s">\n'
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                   % xml_escape(entity.creator.absolute_url()))
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            self.w(entity.creator.view('foaf'))
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            self.w(u'</sioc:User>\n')
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            self.w(u'</sioc:has_creator>\n')
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        self.w(u'<!-- FIXME : here be topics -->')#entity.isioc_topics()
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        self.w(u'<!-- FIXME : here be replies -->')#entity.isioc_replies()
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        self.w(u' </sioc:%s>\n' % isioct)
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   163