R E D

NAME	SIZE	PERMISSION
archives	[ DIR ]	drwxr-xr-x
audio	[ DIR ]	drwxr-xr-x
avatar	[ DIR ]	drwxr-xr-x
block	[ DIR ]	drwxr-xr-x
button	[ DIR ]	drwxr-xr-x
buttons	[ DIR ]	drwxr-xr-x
calendar	[ DIR ]	drwxr-xr-x
categories	[ DIR ]	drwxr-xr-x
code	[ DIR ]	drwxr-xr-x
column	[ DIR ]	drwxr-xr-x
columns	[ DIR ]	drwxr-xr-x
comment-author-name	[ DIR ]	drwxr-xr-x
comment-content	[ DIR ]	drwxr-xr-x
comment-date	[ DIR ]	drwxr-xr-x
comment-edit-link	[ DIR ]	drwxr-xr-x
comment-reply-link	[ DIR ]	drwxr-xr-x
comment-template	[ DIR ]	drwxr-xr-x
comments	[ DIR ]	drwxr-xr-x
comments-pagination	[ DIR ]	drwxr-xr-x
comments-pagination-next	[ DIR ]	drwxr-xr-x
comments-pagination-numbers	[ DIR ]	drwxr-xr-x
comments-pagination-previous	[ DIR ]	drwxr-xr-x
comments-title	[ DIR ]	drwxr-xr-x
cover	[ DIR ]	drwxr-xr-x
details	[ DIR ]	drwxr-xr-x
embed	[ DIR ]	drwxr-xr-x
file	[ DIR ]	drwxr-xr-x
footnotes	[ DIR ]	drwxr-xr-x
freeform	[ DIR ]	drwxr-xr-x
gallery	[ DIR ]	drwxr-xr-x
group	[ DIR ]	drwxr-xr-x
heading	[ DIR ]	drwxr-xr-x
home-link	[ DIR ]	drwxr-xr-x
html	[ DIR ]	drwxr-xr-x
image	[ DIR ]	drwxr-xr-x
latest-comments	[ DIR ]	drwxr-xr-x
latest-posts	[ DIR ]	drwxr-xr-x
legacy-widget	[ DIR ]	drwxr-xr-x
list	[ DIR ]	drwxr-xr-x
list-item	[ DIR ]	drwxr-xr-x
loginout	[ DIR ]	drwxr-xr-x
media-text	[ DIR ]	drwxr-xr-x
missing	[ DIR ]	drwxr-xr-x
more	[ DIR ]	drwxr-xr-x
navigation	[ DIR ]	drwxr-xr-x
navigation-link	[ DIR ]	drwxr-xr-x
navigation-submenu	[ DIR ]	drwxr-xr-x
nextpage	[ DIR ]	drwxr-xr-x
page-list	[ DIR ]	drwxr-xr-x
page-list-item	[ DIR ]	drwxr-xr-x
paragraph	[ DIR ]	drwxr-xr-x
pattern	[ DIR ]	drwxr-xr-x
post-author	[ DIR ]	drwxr-xr-x
post-author-biography	[ DIR ]	drwxr-xr-x
post-author-name	[ DIR ]	drwxr-xr-x
post-comments-form	[ DIR ]	drwxr-xr-x
post-content	[ DIR ]	drwxr-xr-x
post-date	[ DIR ]	drwxr-xr-x
post-excerpt	[ DIR ]	drwxr-xr-x
post-featured-image	[ DIR ]	drwxr-xr-x
post-navigation-link	[ DIR ]	drwxr-xr-x
post-template	[ DIR ]	drwxr-xr-x
post-terms	[ DIR ]	drwxr-xr-x
post-title	[ DIR ]	drwxr-xr-x
preformatted	[ DIR ]	drwxr-xr-x
pullquote	[ DIR ]	drwxr-xr-x
query	[ DIR ]	drwxr-xr-x
query-no-results	[ DIR ]	drwxr-xr-x
query-pagination	[ DIR ]	drwxr-xr-x
query-pagination-next	[ DIR ]	drwxr-xr-x
query-pagination-numbers	[ DIR ]	drwxr-xr-x
query-pagination-previous	[ DIR ]	drwxr-xr-x
query-title	[ DIR ]	drwxr-xr-x
quote	[ DIR ]	drwxr-xr-x
read-more	[ DIR ]	drwxr-xr-x
rss	[ DIR ]	drwxr-xr-x
search	[ DIR ]	drwxr-xr-x
separator	[ DIR ]	drwxr-xr-x
shortcode	[ DIR ]	drwxr-xr-x
site-logo	[ DIR ]	drwxr-xr-x
site-tagline	[ DIR ]	drwxr-xr-x
site-title	[ DIR ]	drwxr-xr-x
social-link	[ DIR ]	drwxr-xr-x
social-links	[ DIR ]	drwxr-xr-x
spacer	[ DIR ]	drwxr-xr-x
table	[ DIR ]	drwxr-xr-x
tag-cloud	[ DIR ]	drwxr-xr-x
template-part	[ DIR ]	drwxr-xr-x
term-description	[ DIR ]	drwxr-xr-x
text-columns	[ DIR ]	drwxr-xr-x
verse	[ DIR ]	drwxr-xr-x
video	[ DIR ]	drwxr-xr-x
widget-group	[ DIR ]	drwxr-xr-x
archives.php	2.89 KB	-rwxr-xr-x
avatar.php	5.55 KB	-rwxr-xr-x
block.php	1.57 KB	-rwxr-xr-x
blocks-json.php	156.18 KB	-rwxr-xr-x
calendar.php	6.03 KB	-rwxr-xr-x
categories.php	2.78 KB	-rwxr-xr-x
comment-author-name.php	2.05 KB	-rwxr-xr-x
comment-content.php	2.36 KB	-rwxr-xr-x
comment-date.php	1.56 KB	-rwxr-xr-x
comment-edit-link.php	1.64 KB	-rwxr-xr-x
comment-reply-link.php	1.99 KB	-rwxr-xr-x
comment-template.php	4.35 KB	-rwxr-xr-x
comments-pagination-next.php	1.81 KB	-rwxr-xr-x
comments-pagination-numbers.php	1.56 KB	-rwxr-xr-x
comments-pagination-previous.php	1.61 KB	-rwxr-xr-x
comments-pagination.php	1.13 KB	-rwxr-xr-x
comments-title.php	2.67 KB	-rwxr-xr-x
comments.php	6.47 KB	-rwxr-xr-x
cover.php	2.45 KB	-rwxr-xr-x
file.php	3.38 KB	-rwxr-xr-x
footnotes.php	8.69 KB	-rwxr-xr-x
gallery.php	4.85 KB	-rwxr-xr-x
heading.php	1.23 KB	-rwxr-xr-x
home-link.php	4.72 KB	-rwxr-xr-x
image.php	1.29 KB	-rwxr-xr-x
index.php	3.68 KB	-rwxr-xr-x
latest-comments.php	4.88 KB	-rwxr-xr-x
latest-posts.php	7.87 KB	-rwxr-xr-x
legacy-widget.php	3.81 KB	-rwxr-xr-x
loginout.php	1.35 KB	-rwxr-xr-x
navigation-link.php	11.65 KB	-rwxr-xr-x
navigation-submenu.php	9.18 KB	-rwxr-xr-x
navigation.php	37.5 KB	-rwxr-xr-x
page-list-item.php	342 B	-rwxr-xr-x
page-list.php	13.14 KB	-rwxr-xr-x
pattern.php	1.01 KB	-rwxr-xr-x
post-author-biography.php	1.41 KB	-rwxr-xr-x
post-author-name.php	1.71 KB	-rwxr-xr-x
post-author.php	2.51 KB	-rwxr-xr-x
post-comments-form.php	2.68 KB	-rwxr-xr-x
post-content.php	2.28 KB	-rwxr-xr-x
post-date.php	2.29 KB	-rwxr-xr-x
post-excerpt.php	3.33 KB	-rwxr-xr-x
post-featured-image.php	7.63 KB	-rwxr-xr-x
post-navigation-link.php	4.26 KB	-rwxr-xr-x
post-template.php	4.86 KB	-rwxr-xr-x
post-terms.php	3.27 KB	-rwxr-xr-x
post-title.php	2.02 KB	-rwxr-xr-x
query-no-results.php	1.76 KB	-rwxr-xr-x
query-pagination-next.php	2.9 KB	-rwxr-xr-x
query-pagination-numbers.php	3.73 KB	-rwxr-xr-x
query-pagination-previous.php	2.36 KB	-rwxr-xr-x
query-pagination.php	1.11 KB	-rwxr-xr-x
query-title.php	2.01 KB	-rwxr-xr-x
query.php	304 B	-rwxr-xr-x
read-more.php	1.75 KB	-rwxr-xr-x
require-dynamic-blocks.php	3.85 KB	-rwxr-xr-x
require-static-blocks.php	536 B	-rwxr-xr-x
rss.php	3.83 KB	-rwxr-xr-x
search.php	21.61 KB	-rwxr-xr-x
shortcode.php	697 B	-rwxr-xr-x
site-logo.php	5.79 KB	-rwxr-xr-x
site-tagline.php	994 B	-rwxr-xr-x
site-title.php	1.73 KB	-rwxr-xr-x
social-link.php	59.13 KB	-rwxr-xr-x
tag-cloud.php	1.37 KB	-rwxr-xr-x
template-part.php	9.71 KB	-rwxr-xr-x
term-description.php	1.27 KB	-rwxr-xr-x
widget-group.php	2.12 KB	-rwxr-xr-x

Code Editor : footnotes.php

<?php
/**
 * Server-side rendering of the `core/footnotes` block.
 *
 * @package WordPress
 */

/**
 * Renders the `core/footnotes` block on the server.
 *
 * @since 6.3.0
 *
 * @param array    $attributes Block attributes.
 * @param string   $content    Block default content.
 * @param WP_Block $block      Block instance.
 *
 * @return string Returns the HTML representing the footnotes.
 */
function render_block_core_footnotes( $attributes, $content, $block ) {
	// Bail out early if the post ID is not set for some reason.
	if ( empty( $block->context['postId'] ) ) {
		return '';
	}

if ( post_password_required( $block->context['postId'] ) ) {
		return;
	}

$footnotes = get_post_meta( $block->context['postId'], 'footnotes', true );

if ( ! $footnotes ) {
		return;
	}

$footnotes = json_decode( $footnotes, true );

if ( ! is_array( $footnotes ) || count( $footnotes ) === 0 ) {
		return '';
	}

$wrapper_attributes = get_block_wrapper_attributes();

$block_content = '';

foreach ( $footnotes as $footnote ) {
		$block_content .= sprintf(
			'<li id="%1$s">%2$s <a href="#%1$s-link">↩︎</a></li>',
			$footnote['id'],
			$footnote['content']
		);
	}

return sprintf(
		'<ol %1$s>%2$s</ol>',
		$wrapper_attributes,
		$block_content
	);
}

/**
 * Registers the `core/footnotes` block on the server.
 *
 * @since 6.3.0
 */
function register_block_core_footnotes() {
	foreach ( array( 'post', 'page' ) as $post_type ) {
		register_post_meta(
			$post_type,
			'footnotes',
			array(
				'show_in_rest' => true,
				'single'       => true,
				'type'         => 'string',
			)
		);
	}
	register_block_type_from_metadata(
		__DIR__ . '/footnotes',
		array(
			'render_callback' => 'render_block_core_footnotes',
		)
	);
}
add_action( 'init', 'register_block_core_footnotes' );

/**
 * Saves the footnotes meta value to the revision.
 *
 * @since 6.3.0
 *
 * @param int $revision_id The revision ID.
 */
function wp_save_footnotes_meta( $revision_id ) {
	$post_id = wp_is_post_revision( $revision_id );

if ( $post_id ) {
		$footnotes = get_post_meta( $post_id, 'footnotes', true );

if ( $footnotes ) {
			// Can't use update_post_meta() because it doesn't allow revisions.
			update_metadata( 'post', $revision_id, 'footnotes', wp_slash( $footnotes ) );
		}
	}
}
add_action( 'wp_after_insert_post', 'wp_save_footnotes_meta' );

/**
 * Keeps track of the revision ID for "rest_after_insert_{$post_type}".
 *
 * @since 6.3.0
 *
 * @global int $wp_temporary_footnote_revision_id The footnote revision ID.
 *
 * @param int $revision_id The revision ID.
 */
function wp_keep_footnotes_revision_id( $revision_id ) {
	global $wp_temporary_footnote_revision_id;
	$wp_temporary_footnote_revision_id = $revision_id;
}
add_action( '_wp_put_post_revision', 'wp_keep_footnotes_revision_id' );

/**
 * This is a specific fix for the REST API. The REST API doesn't update
 * the post and post meta in one go (through `meta_input`). While it
 * does fix the `wp_after_insert_post` hook to be called correctly after
 * updating meta, it does NOT fix hooks such as post_updated and
 * save_post, which are normally also fired after post meta is updated
 * in `wp_insert_post()`. Unfortunately, `wp_save_post_revision` is
 * added to the `post_updated` action, which means the meta is not
 * available at the time, so we have to add it afterwards through the
 * `"rest_after_insert_{$post_type}"` action.
 *
 * @since 6.3.0
 *
 * @global int $wp_temporary_footnote_revision_id The footnote revision ID.
 *
 * @param WP_Post $post The post object.
 */
function wp_add_footnotes_revisions_to_post_meta( $post ) {
	global $wp_temporary_footnote_revision_id;

if ( $wp_temporary_footnote_revision_id ) {
		$revision = get_post( $wp_temporary_footnote_revision_id );

if ( ! $revision ) {
			return;
		}

$post_id = $revision->post_parent;

// Just making sure we're updating the right revision.
		if ( $post->ID === $post_id ) {
			$footnotes = get_post_meta( $post_id, 'footnotes', true );

if ( $footnotes ) {
				// Can't use update_post_meta() because it doesn't allow revisions.
				update_metadata( 'post', $wp_temporary_footnote_revision_id, 'footnotes', wp_slash( $footnotes ) );
			}
		}
	}
}

add_action( 'rest_after_insert_post', 'wp_add_footnotes_revisions_to_post_meta' );
add_action( 'rest_after_insert_page', 'wp_add_footnotes_revisions_to_post_meta' );

/**
 * Restores the footnotes meta value from the revision.
 *
 * @since 6.3.0
 *
 * @param int $post_id     The post ID.
 * @param int $revision_id The revision ID.
 */
function wp_restore_footnotes_from_revision( $post_id, $revision_id ) {
	$footnotes = get_post_meta( $revision_id, 'footnotes', true );

if ( $footnotes ) {
		update_post_meta( $post_id, 'footnotes', wp_slash( $footnotes ) );
	} else {
		delete_post_meta( $post_id, 'footnotes' );
	}
}
add_action( 'wp_restore_post_revision', 'wp_restore_footnotes_from_revision', 10, 2 );

/**
 * Adds the footnotes field to the revision.
 *
 * @since 6.3.0
 *
 * @param array $fields The revision fields.
 * @return array The revision fields.
 */
function wp_add_footnotes_to_revision( $fields ) {
	$fields['footnotes'] = __( 'Footnotes' );
	return $fields;
}
add_filter( '_wp_post_revision_fields', 'wp_add_footnotes_to_revision' );

/**
 * Gets the footnotes field from the revision.
 *
 * @since 6.3.0
 *
 * @param string $revision_field The field value, but $revision->$field
 *                               (footnotes) does not exist.
 * @param string $field          The field name, in this case "footnotes".
 * @param object $revision       The revision object to compare against.
 * @return string The field value.
 */
function wp_get_footnotes_from_revision( $revision_field, $field, $revision ) {
	return get_metadata( 'post', $revision->ID, $field, true );
}
add_filter( '_wp_post_revision_field_footnotes', 'wp_get_footnotes_from_revision', 10, 3 );

/**
 * The REST API autosave endpoint doesn't save meta, so we can use the
 * `wp_creating_autosave` when it updates an exiting autosave, and
 * `_wp_put_post_revision` when it creates a new autosave.
 *
 * @since 6.3.0
 *
 * @param int|array $autosave The autosave ID or array.
 */
function _wp_rest_api_autosave_meta( $autosave ) {
	// Ensure it's a REST API request.
	if ( ! defined( 'REST_REQUEST' ) || ! REST_REQUEST ) {
		return;
	}

$body = rest_get_server()->get_raw_data();
	$body = json_decode( $body, true );

if ( ! isset( $body['meta']['footnotes'] ) ) {
		return;
	}

// `wp_creating_autosave` passes the array,
	// `_wp_put_post_revision` passes the ID.
	$id = is_int( $autosave ) ? $autosave : $autosave['ID'];

if ( ! $id ) {
		return;
	}

update_post_meta( $id, 'footnotes', wp_slash( $body['meta']['footnotes'] ) );
}
// See https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php#L391C1-L391C1.
add_action( 'wp_creating_autosave', '_wp_rest_api_autosave_meta' );
// See https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php#L398.
// Then https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/revision.php#L367.
add_action( '_wp_put_post_revision', '_wp_rest_api_autosave_meta' );

/**
 * This is a workaround for the autosave endpoint returning early if the
 * revision field are equal. The problem is that "footnotes" is not real
 * revision post field, so there's nothing to compare against.
 *
 * This trick sets the "footnotes" field (value doesn't matter), which will
 * cause the autosave endpoint to always update the latest revision. That should
 * be fine, it should be ok to update the revision even if nothing changed. Of
 * course, this is temporary fix.
 *
 * @since 6.3.0
 *
 * @param WP_Post         $prepared_post The prepared post object.
 * @param WP_REST_Request $request       The request object.
 *
 * See https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php#L365-L384.
 * See https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php#L219.
 */
function _wp_rest_api_force_autosave_difference( $prepared_post, $request ) {
	// We only want to be altering POST requests.
	if ( $request->get_method() !== 'POST' ) {
		return $prepared_post;
	}

// Only alter requests for the '/autosaves' route.
	if ( substr( $request->get_route(), -strlen( '/autosaves' ) ) !== '/autosaves' ) {
		return $prepared_post;
	}

$prepared_post->footnotes = '[]';
	return $prepared_post;
}

add_filter( 'rest_pre_insert_post', '_wp_rest_api_force_autosave_difference', 10, 2 );

${this.title}

Code Editor : footnotes.php