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