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understrap/inc/bootstrap-wp-gallery.php

106 lines
3.6 KiB
PHP

<?php
//Based on Roots Sage Gallery: https://github.com/roots/sage/blob/5b9786b8ceecfe717db55666efe5bcf0c9e1801c/lib/gallery.php
// Remove built in shortcode
remove_shortcode('gallery', 'gallery_shortcode');
// Replace with custom shortcode
function shortcode_gallery($attr) {
$post = get_post();
static $instance = 0;
$instance++;
if (!empty($attr['ids'])) {
if (empty($attr['orderby'])) {
$attr['orderby'] = 'post__in';
}
$attr['include'] = $attr['ids'];
}
$output = apply_filters('post_gallery', '', $attr);
if ($output != '') {
return $output;
}
if (isset($attr['orderby'])) {
$attr['orderby'] = sanitize_sql_orderby($attr['orderby']);
if (!$attr['orderby']) {
unset($attr['orderby']);
}
}
extract(shortcode_atts([
'order' => 'ASC',
'orderby' => 'menu_order ID',
'id' => $post->ID,
'itemtag' => '',
'icontag' => '',
'captiontag' => '',
'columns' => 3,
'size' => 'thumbnail',
'include' => '',
'exclude' => '',
'link' => ''
], $attr));
$id = intval($id);
$columns = (12 % $columns == 0) ? $columns : 3;
$grid = sprintf('col-sm-%1$s col-lg-%1$s', 12 / $columns);
if ($order === 'RAND') {
$orderby = 'none';
}
if (!empty($include)) {
$_attachments = get_posts(['include' => $include, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby]);
$attachments = [];
foreach ($_attachments as $key => $val) {
$attachments[$val->ID] = $_attachments[$key];
}
} elseif (!empty($exclude)) {
$attachments = get_children(['post_parent' => $id, 'exclude' => $exclude, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby]);
} else {
$attachments = get_children(['post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby]);
}
if (empty($attachments)) {
return '';
}
if (is_feed()) {
$output = "\n";
foreach ($attachments as $att_id => $attachment) {
$output .= wp_get_attachment_link($att_id, $size, true) . "\n";
}
return $output;
}
$unique = (get_query_var('page')) ? $instance . '-p' . get_query_var('page') : $instance;
$output = '<div class="gallery gallery-' . $id . '-' . $unique . '">';
$i = 0;
foreach ($attachments as $id => $attachment) {
switch($link) {
case 'file':
$image = wp_get_attachment_link($id, $size, false, false);
break;
case 'none':
$image = wp_get_attachment_image($id, $size, false, ['class' => 'thumbnail img-thumbnail']);
break;
default:
$image = wp_get_attachment_link($id, $size, true, false);
break;
}
$output .= ($i % $columns == 0) ? '<div class="row gallery-row">' : '';
$output .= '<div class="' . $grid .'">' . $image;
if (trim($attachment->post_excerpt)) {
$output .= '<div class="caption hidden">' . wptexturize($attachment->post_excerpt) . '</div>';
}
$output .= '</div>';
$i++;
$output .= ($i % $columns == 0) ? '</div>' : '';
}
$output .= ($i % $columns != 0 ) ? '</div>' : '';
$output .= '</div>';
return $output;
}
add_shortcode('gallery', 'shortcode_gallery');
/**
* Add class="thumbnail img-thumbnail" to attachment items
*/
function attachment_link_class($html) {
$html = str_replace('<a', '<a class="thumbnail img-thumbnail"', $html);
return $html;
}
add_filter('wp_get_attachment_link', 'attachment_link_class', 10, 1);