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WordPress 3.1 Taxonomy Feeds
<?php
/**
* WordPress 3.1 Taxonomy Feeds Plugin (Must-Use)
*
* Copyright (C) 2011 hakre <http://hakre.wordpress.com/>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* USAGE:
*
* http://example.net/feed?taxonomy=people
*
* @author hakre <http://hakre.wordpress.com>
* @see http://wordpress.stackexchange.com/questions/3720/rss-feed-for-posts-containing-any-term-from-a-taxonomy
*/
/* feel free to uncomment / remove the next hook as it's only in here for demo */
add_filter('init', function() {
# register demo "people" taxonomy
register_taxonomy(
'people',
'post',
array(
'label' => __('People'),
'sort' => true,
'args' => array('orderby' => 'term_order'),
'rewrite' => array('slug' => 'person')
)
);
}); /* end of demo hook */
add_filter('pre_get_posts', function(WP_query $query) {
if (!($taxonomyName = $query->get('taxonomy')) && !$query->is_feed)
return; # quick return if not a feed and parameter missing.
$taxonomyIds = get_terms($taxonomyName, array('fields' => 'ids'));
if (is_wp_error($taxonomyIds))
return; # quick return if taxonomy does not exists
$taxonomyQuery = array(
'taxonomy' => $taxonomyName,
'terms' => $taxonomyIds,
);
isset($query->query_vars['tax_query'])
|| $query->query_vars['tax_query'] = array()
;
$query->query_vars['tax_query'][] = $taxonomyQuery;
});
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