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tfn_get_back_to_search_links.py
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Mon, Aug 5, 06:16

tfn_get_back_to_search_links.py
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# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2013 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio 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
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
from flask import session
from invenio.base.globals import cfg
from invenio.ext.template import render_template_to_string
"""
Template context function - Display links (previous, next, back-to-search)
to navigate through the records.
"""
def template_context_function(recID):
"""
Displays next-hit/previous-hit/back-to-search links
on the detailed record pages in order to be able to quickly
flip between detailed record pages
:param recID: detailed record ID
:type recID: string
:return: html output
"""
# this variable is set to zero so nothing is displayed
if not cfg['CFG_WEBSEARCH_PREV_NEXT_HIT_LIMIT']:
return ""
# search for a specific record having not done
# any search before
try:
last_query = session['websearch-last-query']
recids = session["websearch-last-query-hits"]
except:
return ""
if recids:
return render_template_to_string('records/back_to_search_links.html',
recID=int(recID),
last_query=cfg['CFG_SITE_URL'] + last_query,
recids=recids)
else:
# did not rich the limit CFG_WEBSEARCH_PREV_NEXT_HIT_LIMIT,
# so nothing is displayed
return ""

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