120 lines
3.2 KiB
PHP
120 lines
3.2 KiB
PHP
<?php
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/**
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* Server-side rendering of the `core/comment-template` block.
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*
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* @package WordPress
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*/
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/**
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* Function that recursively renders a list of nested comments.
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*
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* @global int $comment_depth
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*
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* @param WP_Comment[] $comments The array of comments.
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* @param WP_Block $block Block instance.
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* @return string
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*/
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function block_core_comment_template_render_comments( $comments, $block ) {
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global $comment_depth;
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if ( empty( $comment_depth ) ) {
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$comment_depth = 1;
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}
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$content = '';
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foreach ( $comments as $comment ) {
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$block_content = ( new WP_Block(
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$block->parsed_block,
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array(
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'commentId' => $comment->comment_ID,
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)
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) )->render( array( 'dynamic' => false ) );
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$children = $comment->get_children();
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/*
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* We need to create the CSS classes BEFORE recursing into the children.
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* This is because comment_class() uses globals like `$comment_alt`
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* and `$comment_thread_alt` which are order-sensitive.
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*
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* The `false` parameter at the end means that we do NOT want the function
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* to `echo` the output but to return a string.
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* See https://developer.wordpress.org/reference/functions/comment_class/#parameters.
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*/
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$comment_classes = comment_class( '', $comment->comment_ID, $comment->comment_post_ID, false );
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// If the comment has children, recurse to create the HTML for the nested
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// comments.
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if ( ! empty( $children ) ) {
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$comment_depth += 1;
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$inner_content = block_core_comment_template_render_comments(
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$children,
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$block
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);
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$block_content .= sprintf( '<ol>%1$s</ol>', $inner_content );
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$comment_depth -= 1;
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}
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$content .= sprintf( '<li id="comment-%1$s" %2$s>%3$s</li>', $comment->comment_ID, $comment_classes, $block_content );
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}
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return $content;
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}
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/**
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* Renders the `core/comment-template` block on the server.
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*
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* @param array $attributes Block attributes.
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* @param string $content Block default content.
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* @param WP_Block $block Block instance.
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*
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* @return string Returns the HTML representing the comments using the layout
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* defined by the block's inner blocks.
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*/
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function render_block_core_comment_template( $attributes, $content, $block ) {
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// Bail out early if the post ID is not set for some reason.
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if ( empty( $block->context['postId'] ) ) {
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return '';
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}
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$comment_query = new WP_Comment_Query(
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build_comment_query_vars_from_block( $block )
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);
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// Get an array of comments for the current post.
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$comments = $comment_query->get_comments();
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if ( count( $comments ) === 0 ) {
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return '';
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}
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$comment_order = get_option( 'comment_order' );
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if ( 'desc' === $comment_order ) {
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$comments = array_reverse( $comments );
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}
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$wrapper_attributes = get_block_wrapper_attributes();
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return sprintf(
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'<ol %1$s>%2$s</ol>',
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$wrapper_attributes,
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block_core_comment_template_render_comments( $comments, $block )
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);
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}
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/**
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* Registers the `core/comment-template` block on the server.
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*/
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function register_block_core_comment_template() {
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register_block_type_from_metadata(
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__DIR__ . '/comment-template',
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array(
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'render_callback' => 'render_block_core_comment_template',
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'skip_inner_blocks' => true,
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)
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);
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}
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add_action( 'init', 'register_block_core_comment_template' );
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