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bfe_webjournal_widget_latestPhoto.py
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Thu, Sep 12, 10:14

bfe_webjournal_widget_latestPhoto.py
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# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2007, 2008, 2009, 2010, 2011 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.
"""
WebJournal widget - display photos from given collections
"""
from invenio.modules.formatter.engine import BibFormatObject
from invenio.legacy.search_engine import perform_request_search
from invenio.config import CFG_CERN_SITE, CFG_SITE_URL, CFG_SITE_RECORD
def format_element(bfo, collections, max_photos="3", separator="<br/>"):
"""
Display the latest pictures from the given collection(s)
@param collections: comma-separated list of collection form which photos have to be fetched
@param max_photos: maximum number of photos to display
@param separator: separator between photos
"""
try:
int_max_photos = int(max_photos)
except:
int_max_photos = 0
try:
collections_list = [coll.strip() for coll in collections.split(',')]
except:
collections_list = []
out = get_widget_html(bfo.lang, int_max_photos,
collections_list, separator, bfo.lang)
return out
def escape_values(bfo):
"""
Called by BibFormat in order to check if output of this element
should be escaped.
"""
return 0
def get_widget_html(language, max_photos, collections, separator, ln):
"""
Returns the content of the widget
"""
latest_photo_ids = perform_request_search(c=collections,
rg=max_photos,
of='id')
images_urls = []
for recid in latest_photo_ids[:max_photos]:
try:
photo_record = BibFormatObject(recid)
except:
# todo: Exception, no photo in this selection
continue
if language == "fr":
try:
title = photo_record.fields('246_1a', escape=1)[0]
except KeyError:
try:
title = photo_record.fields('245__a', escape=1)[0]
except:
title = ""
else:
try:
title = photo_record.fields('245__a', escape=1)[0]
except KeyError:
# todo: exception, picture with no title
title = ""
if CFG_CERN_SITE and photo_record.fields('8567_'):
# Get from 8567_
dfs_images = photo_record.fields('8567_')
for image_block in dfs_images:
if image_block.get("y", '') == "Icon":
if image_block.get("u", '').startswith("http://"):
images_urls.append((recid, image_block["u"], title))
break # Just one image per record
else:
# Get from 8564_
images = photo_record.fields('8564_')
for image_block in images:
if image_block.get("x", '').lower() == "icon":
if image_block.get("q", '').startswith("http://"):
images_urls.append((recid, image_block["q"], title))
break # Just one image per record
# Build output
html_out = separator.join(['<a href="%s/%s/%i?ln=%s"><img class="phr" width="100" height="67" src="%s"/>%s</a>' % (CFG_SITE_URL, CFG_SITE_RECORD, recid, ln, photo_url, title) for (recid, photo_url, title) in images_urls])
return html_out

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