author | Alexandre Fayolle <alexandre.fayolle@logilab.fr> |
Wed, 07 Apr 2010 11:56:30 +0200 | |
branch | stable |
changeset 5171 | 1c2567af37dd |
parent 4994 | 108bb7f2a171 |
child 5421 | 8167de96c523 |
permissions | -rw-r--r-- |
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"""base xml and rss views |
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:organization: Logilab |
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update copyright: welcome 2010
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2. |
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses |
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""" |
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__docformat__ = "restructuredtext en" |
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_ = unicode |
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|
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from time import timezone |
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|
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from logilab.mtconverter import xml_escape |
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|
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from cubicweb.selectors import non_final_entity, one_line_rset, appobject_selectable |
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from cubicweb.view import EntityView, AnyRsetView, Component |
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from cubicweb.uilib import simple_sgml_tag |
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from cubicweb.web import httpcache, box |
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|
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|
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# base xml views ############################################################## |
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class XMLView(EntityView): |
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"""xml view for entities""" |
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__regid__ = 'xml' |
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title = _('xml') |
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templatable = False |
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content_type = 'text/xml' |
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xml_root = 'rset' |
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item_vid = 'xmlitem' |
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def cell_call(self, row, col): |
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self.wview(self.item_vid, self.cw_rset, row=row, col=col) |
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|
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def call(self): |
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"""display a list of entities by calling their <item_vid> view""" |
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self.w(u'<?xml version="1.0" encoding="%s"?>\n' % self._cw.encoding) |
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self.w(u'<%s size="%s">\n' % (self.xml_root, len(self.cw_rset))) |
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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'</%s>\n' % self.xml_root) |
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|
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class XMLItemView(EntityView): |
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__regid__ = 'xmlitem' |
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|
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def cell_call(self, row, col): |
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""" element as an item for an xml feed """ |
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entity = self.cw_rset.complete_entity(row, col) |
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self.w(u'<%s>\n' % (entity.e_schema)) |
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for rschema, attrschema in entity.e_schema.attribute_definitions(): |
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attr = rschema.type |
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if attr == 'eid': |
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value = entity.eid |
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else: |
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try: |
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value = entity[attr] |
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except KeyError: |
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# Bytes |
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continue |
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if value is not None: |
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if attrschema == 'Bytes': |
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from base64 import b64encode |
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value = '<![CDATA[%s]]>' % b64encode(value.getvalue()) |
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elif isinstance(value, basestring): |
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value = xml_escape(value) |
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self.w(u' <%s>%s</%s>\n' % (attr, value, attr)) |
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self.w(u'</%s>\n' % (entity.e_schema)) |
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class XMLRsetView(AnyRsetView): |
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"""dumps raw rset as xml""" |
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__regid__ = 'rsetxml' |
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title = _('xml export') |
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templatable = False |
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content_type = 'text/xml' |
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xml_root = 'rset' |
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|
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def call(self): |
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w = self.w |
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rset, descr = self.cw_rset, self.cw_rset.description |
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eschema = self._cw.vreg.schema.eschema |
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labels = self.columns_labels(tr=False) |
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w(u'<?xml version="1.0" encoding="%s"?>\n' % self._cw.encoding) |
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w(u'<%s query="%s">\n' % (self.xml_root, xml_escape(rset.printable_rql()))) |
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for rowindex, row in enumerate(self.cw_rset): |
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w(u' <row>\n') |
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for colindex, val in enumerate(row): |
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etype = descr[rowindex][colindex] |
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90 |
tag = labels[colindex] |
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attrs = {} |
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92 |
if '(' in tag: |
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93 |
attrs['expr'] = tag |
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tag = 'funccall' |
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if val is not None and not eschema(etype).final: |
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attrs['eid'] = val |
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# csvrow.append(val) # val is eid in that case |
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val = self._cw.view('textincontext', rset, |
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row=rowindex, col=colindex) |
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100 |
else: |
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101 |
val = self._cw.view('final', rset, row=rowindex, |
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col=colindex, format='text/plain') |
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103 |
w(simple_sgml_tag(tag, val, **attrs)) |
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104 |
w(u' </row>\n') |
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105 |
w(u'</%s>\n' % self.xml_root) |
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106 |
|
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# RSS stuff ################################################################### |
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109 |
|
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class RSSFeedURL(Component): |
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__regid__ = 'rss_feed_url' |
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__select__ = non_final_entity() |
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|
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def feed_url(self): |
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return self._cw.build_url(rql=self.cw_rset.limited_rql(), vid='rss') |
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116 |
|
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117 |
|
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class RSSEntityFeedURL(Component): |
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__regid__ = 'rss_feed_url' |
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__select__ = non_final_entity() & one_line_rset() |
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|
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def feed_url(self): |
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return self.cw_rset.get_entity(0, 0).rss_feed_url() |
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124 |
|
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|
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class RSSIconBox(box.BoxTemplate): |
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"""just display the RSS icon on uniform result set""" |
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__regid__ = 'rss' |
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__select__ = (box.BoxTemplate.__select__ |
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& appobject_selectable('components', 'rss_feed_url')) |
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|
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visible = False |
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order = 999 |
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|
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def call(self, **kwargs): |
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try: |
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rss = self._cw.external_resource('RSS_LOGO') |
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except KeyError: |
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self.error('missing RSS_LOGO external resource') |
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return |
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urlgetter = self._cw.vreg['components'].select('rss_feed_url', self._cw, |
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rset=self.cw_rset) |
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url = urlgetter.feed_url() |
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self.w(u'<a href="%s"><img src="%s" alt="rss"/></a>\n' % (xml_escape(url), rss)) |
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145 |
|
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146 |
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class RSSView(XMLView): |
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__regid__ = 'rss' |
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title = _('rss') |
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templatable = False |
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content_type = 'text/xml' |
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http_cache_manager = httpcache.MaxAgeHTTPCacheManager |
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cache_max_age = 60*60*2 # stay in http cache for 2 hours by default |
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item_vid = 'rssitem' |
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156 |
def _open(self): |
|
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req = self._cw |
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self.w(u'<?xml version="1.0" encoding="%s"?>\n' % req.encoding) |
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self.w(u'<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">\n') |
160 |
self.w(u' <channel>\n') |
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self.w(u' <title>%s RSS Feed</title>\n' |
162 |
% xml_escape(self.page_title())) |
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self.w(u' <description>%s</description>\n' |
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% xml_escape(req.form.get('vtitle', ''))) |
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params = req.form.copy() |
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params.pop('vid', None) |
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self.w(u' <link>%s</link>\n' % xml_escape(self._cw.build_url(**params))) |
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def _close(self): |
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self.w(u' </channel>\n') |
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self.w(u'</rss>') |
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def call(self): |
|
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"""display a list of entities by calling their <item_vid> view""" |
|
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self._open() |
|
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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._close() |
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def cell_call(self, row, col): |
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self.wview(self.item_vid, self.cw_rset, row=row, col=col) |
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class RSSItemView(EntityView): |
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__regid__ = 'rssitem' |
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date_format = '%%Y-%%m-%%dT%%H:%%M%+03i:00' % (timezone / 3600) |
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add_div_section = False |
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188 |
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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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self.w(u'<item>\n') |
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self.w(u'<guid isPermaLink="true">%s</guid>\n' |
193 |
% xml_escape(entity.absolute_url())) |
|
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self.render_title_link(entity) |
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self.render_description(entity) |
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self._marker('dc:date', entity.dc_date(self.date_format)) |
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self.render_entity_creator(entity) |
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self.w(u'</item>\n') |
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def render_description(self, entity): |
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self._marker('description', entity.dc_description(format='text/html')) |
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def render_title_link(self, entity): |
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self._marker('title', entity.dc_long_title()) |
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self._marker('link', entity.absolute_url()) |
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207 |
def render_entity_creator(self, entity): |
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if entity.creator: |
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self._marker('dc:creator', entity.dc_creator()) |
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211 |
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def _marker(self, marker, value): |
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if value: |
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self.w(u' <%s>%s</%s>\n' % (marker, xml_escape(value), marker)) |