comicpress-2.8/classes/ComicPressRelatedPosts.inc

126 lines
3.4 KiB
PHP

<?php
require_once('ComicPressStoryline.inc');
class ComicPressRelatedPosts {
var $related_categories;
function display_related_comics($attrs = '') {
$rp = new ComicPressRelatedPosts();
return $rp->_handle_shortcode(
extract(ComicPressRelatedPosts::_handle_shortcode_attrs($attrs)),
__('Related Comics &not;', 'comicpress'), true
);
}
function display_related_posts($attrs = '') {
$rp = new ComicPressRelatedPosts();
return $rp->_handle_shortcode(
extract(ComicPressRelatedPosts::_handle_shortcode_attrs($attrs)),
__('Related Posts &not;', 'comicpress'), false
);
}
function _handle_shortcode($attrs, $title, $is_in_storyline) {
global $post;
if (is_object($post)) {
if (isset($post->ID)) {
$this->_setup_categories($is_in_storyline);
$tags = $this->_extract_tag_ids($post->ID);
if (!empty($tags)) {
$posts = $this->_do_tags_query($post->ID, $tags, $attrs['limit']);
if (!empty($posts)) {
return $this->build_post_table($title, $posts);
}
}
}
}
return '';
}
function _handle_shortcode_attrs($attrs) {
return shortcode_atts(array(
'limit' => '5',
), $attrs);
}
function _new_comicpressstoryline() { return new ComicPressStoryline(); }
function _setup_categories($is_in_storyline = true) {
$storyline = new ComicPressStoryline();
$storyline->read_from_options();
$storyline_categories = $storyline->build_from_restrictions();
if ($is_in_storyline) {
$this->related_categories = $storyline_categories;
} else {
$this->related_categories = array_diff(get_all_category_ids(), $storyline_categories);
}
}
function build_post_table($title, $posts) {
$output = array();
if (!empty($posts)) {
$output[] = '<div class="related_posts">';
$output[] = '<h4>' . $title . '</h4>';
$output[] = '<ul>';
foreach ($posts as $post) {
if (array_intersect($this->related_categories, wp_get_post_categories($post->ID))) {
$output[] = '<li><a title="' . esc_attr(get_the_title($post)) . '" href="' . esc_attr(get_permalink($post)) . '">' . esc_html(get_the_title($post)) . '</a></li>';
}
}
$output[] = '</ul>';
$output[] = '</div>';
}
return implode('', $output);
}
function _extract_tag_ids($post_id) {
$output = array();
foreach (wp_get_post_tags($post_id) as $tag) {
$output[] = $tag->term_id;
}
return $output;
}
// @codeCoverageIgnoreStart
function _do_tags_query($post_id, $tags = array(), $limit = 5) {
global $wpdb;
if (!empty($tags)) {
if (empty($limit)) {
$limit = 5;
}
// Do the query
$q = "SELECT p.*, count(tr.object_id) as count
FROM
$wpdb->term_taxonomy AS tt,
$wpdb->term_relationships AS tr,
$wpdb->posts AS p
WHERE
tt.taxonomy ='post_tag' AND
tt.term_taxonomy_id = tr.term_taxonomy_id AND
tr.object_id = p.ID AND
tt.term_id IN (%s) AND
p.ID != %d AND
p.post_status = 'publish' AND
p.post_date < NOW()
GROUP BY tr.object_id
ORDER BY count DESC, p.post_date DESC
LIMIT %d";
return $wpdb->get_results($wpdb->prepare($q, implode(',', $tags), $post_id, $limit));
}
return false;
}
// @codeCoverageIgnoreEnd
}
add_shortcode('related_posts', array('ComicPressRelatedPosts', 'display_related_posts'));
add_shortcode('related_comics', array('ComicPressRelatedPosts', 'display_related_comics'));