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287
CTF/Smol/wordpress.old/wp-includes/blocks/footnotes.php
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287
CTF/Smol/wordpress.old/wp-includes/blocks/footnotes.php
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<?php
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/**
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* Server-side rendering of the `core/footnotes` block.
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*
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* @package WordPress
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*/
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/**
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* Renders the `core/footnotes` block on the server.
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*
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* @since 6.3.0
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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 footnotes.
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*/
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function render_block_core_footnotes( $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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if ( post_password_required( $block->context['postId'] ) ) {
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return;
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}
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$footnotes = get_post_meta( $block->context['postId'], 'footnotes', true );
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if ( ! $footnotes ) {
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return;
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}
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$footnotes = json_decode( $footnotes, true );
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if ( count( $footnotes ) === 0 ) {
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return '';
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}
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$wrapper_attributes = get_block_wrapper_attributes();
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$block_content = '';
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foreach ( $footnotes as $footnote ) {
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$block_content .= sprintf(
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'<li id="%1$s">%2$s <a href="#%1$s-link">↩︎</a></li>',
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$footnote['id'],
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$footnote['content']
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);
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}
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return sprintf(
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'<ol %1$s>%2$s</ol>',
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$wrapper_attributes,
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$block_content
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);
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}
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/**
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* Registers the `core/footnotes` block on the server.
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*
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* @since 6.3.0
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*/
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function register_block_core_footnotes() {
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foreach ( array( 'post', 'page' ) as $post_type ) {
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register_post_meta(
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$post_type,
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'footnotes',
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array(
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'show_in_rest' => true,
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'single' => true,
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'type' => 'string',
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)
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);
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}
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register_block_type_from_metadata(
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__DIR__ . '/footnotes',
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array(
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'render_callback' => 'render_block_core_footnotes',
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)
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);
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}
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add_action( 'init', 'register_block_core_footnotes' );
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/**
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* Saves the footnotes meta value to the revision.
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*
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* @since 6.3.0
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*
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* @param int $revision_id The revision ID.
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*/
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function wp_save_footnotes_meta( $revision_id ) {
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$post_id = wp_is_post_revision( $revision_id );
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if ( $post_id ) {
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$footnotes = get_post_meta( $post_id, 'footnotes', true );
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if ( $footnotes ) {
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// Can't use update_post_meta() because it doesn't allow revisions.
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update_metadata( 'post', $revision_id, 'footnotes', $footnotes );
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}
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}
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}
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add_action( 'wp_after_insert_post', 'wp_save_footnotes_meta' );
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/**
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* Keeps track of the revision ID for "rest_after_insert_{$post_type}".
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*
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* @since 6.3.0
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*
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* @global int $wp_temporary_footnote_revision_id The footnote revision ID.
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*
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* @param int $revision_id The revision ID.
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*/
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function wp_keep_footnotes_revision_id( $revision_id ) {
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global $wp_temporary_footnote_revision_id;
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$wp_temporary_footnote_revision_id = $revision_id;
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}
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add_action( '_wp_put_post_revision', 'wp_keep_footnotes_revision_id' );
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/**
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* This is a specific fix for the REST API. The REST API doesn't update
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* the post and post meta in one go (through `meta_input`). While it
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* does fix the `wp_after_insert_post` hook to be called correctly after
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* updating meta, it does NOT fix hooks such as post_updated and
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* save_post, which are normally also fired after post meta is updated
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* in `wp_insert_post()`. Unfortunately, `wp_save_post_revision` is
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* added to the `post_updated` action, which means the meta is not
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* available at the time, so we have to add it afterwards through the
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* `"rest_after_insert_{$post_type}"` action.
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*
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* @since 6.3.0
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*
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* @global int $wp_temporary_footnote_revision_id The footnote revision ID.
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*
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* @param WP_Post $post The post object.
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*/
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function wp_add_footnotes_revisions_to_post_meta( $post ) {
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global $wp_temporary_footnote_revision_id;
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if ( $wp_temporary_footnote_revision_id ) {
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$revision = get_post( $wp_temporary_footnote_revision_id );
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if ( ! $revision ) {
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return;
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}
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$post_id = $revision->post_parent;
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// Just making sure we're updating the right revision.
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if ( $post->ID === $post_id ) {
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$footnotes = get_post_meta( $post_id, 'footnotes', true );
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if ( $footnotes ) {
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// Can't use update_post_meta() because it doesn't allow revisions.
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update_metadata( 'post', $wp_temporary_footnote_revision_id, 'footnotes', $footnotes );
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}
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}
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}
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}
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foreach ( array( 'post', 'page' ) as $post_type ) {
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add_action( "rest_after_insert_{$post_type}", 'wp_add_footnotes_revisions_to_post_meta' );
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}
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/**
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* Restores the footnotes meta value from the revision.
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*
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* @since 6.3.0
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*
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* @param int $post_id The post ID.
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* @param int $revision_id The revision ID.
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*/
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function wp_restore_footnotes_from_revision( $post_id, $revision_id ) {
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$footnotes = get_post_meta( $revision_id, 'footnotes', true );
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if ( $footnotes ) {
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update_post_meta( $post_id, 'footnotes', $footnotes );
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} else {
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delete_post_meta( $post_id, 'footnotes' );
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}
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}
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add_action( 'wp_restore_post_revision', 'wp_restore_footnotes_from_revision', 10, 2 );
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/**
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* Adds the footnotes field to the revision.
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*
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* @since 6.3.0
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*
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* @param array $fields The revision fields.
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* @return array The revision fields.
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*/
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function wp_add_footnotes_to_revision( $fields ) {
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$fields['footnotes'] = __( 'Footnotes' );
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return $fields;
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}
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add_filter( '_wp_post_revision_fields', 'wp_add_footnotes_to_revision' );
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/**
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* Gets the footnotes field from the revision.
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*
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* @since 6.3.0
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*
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* @param string $revision_field The field value, but $revision->$field
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* (footnotes) does not exist.
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* @param string $field The field name, in this case "footnotes".
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* @param object $revision The revision object to compare against.
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* @return string The field value.
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*/
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function wp_get_footnotes_from_revision( $revision_field, $field, $revision ) {
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return get_metadata( 'post', $revision->ID, $field, true );
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}
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add_filter( '_wp_post_revision_field_footnotes', 'wp_get_footnotes_from_revision', 10, 3 );
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/**
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* The REST API autosave endpoint doesn't save meta, so we can use the
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* `wp_creating_autosave` when it updates an exiting autosave, and
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* `_wp_put_post_revision` when it creates a new autosave.
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*
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* @since 6.3.0
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*
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* @param int|array $autosave The autosave ID or array.
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*/
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function _wp_rest_api_autosave_meta( $autosave ) {
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// Ensure it's a REST API request.
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if ( ! defined( 'REST_REQUEST' ) || ! REST_REQUEST ) {
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return;
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}
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$body = rest_get_server()->get_raw_data();
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$body = json_decode( $body, true );
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if ( ! isset( $body['meta']['footnotes'] ) ) {
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return;
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}
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// `wp_creating_autosave` passes the array,
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// `_wp_put_post_revision` passes the ID.
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$id = is_int( $autosave ) ? $autosave : $autosave['ID'];
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if ( ! $id ) {
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return;
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}
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update_post_meta( $id, 'footnotes', $body['meta']['footnotes'] );
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}
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// See https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php#L391C1-L391C1.
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add_action( 'wp_creating_autosave', '_wp_rest_api_autosave_meta' );
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// See https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php#L398.
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// Then https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/revision.php#L367.
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add_action( '_wp_put_post_revision', '_wp_rest_api_autosave_meta' );
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/**
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* This is a workaround for the autosave endpoint returning early if the
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* revision field are equal. The problem is that "footnotes" is not real
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* revision post field, so there's nothing to compare against.
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*
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* This trick sets the "footnotes" field (value doesn't matter), which will
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* cause the autosave endpoint to always update the latest revision. That should
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* be fine, it should be ok to update the revision even if nothing changed. Of
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* course, this is temporary fix.
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*
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* @since 6.3.0
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*
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* @param WP_Post $prepared_post The prepared post object.
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* @param WP_REST_Request $request The request object.
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*
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* See https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php#L365-L384.
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* See https://github.com/WordPress/wordpress-develop/blob/2103cb9966e57d452c94218bbc3171579b536a40/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php#L219.
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*/
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function _wp_rest_api_force_autosave_difference( $prepared_post, $request ) {
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// We only want to be altering POST requests.
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if ( $request->get_method() !== 'POST' ) {
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return $prepared_post;
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}
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// Only alter requests for the '/autosaves' route.
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if ( substr( $request->get_route(), -strlen( '/autosaves' ) ) !== '/autosaves' ) {
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return $prepared_post;
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}
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$prepared_post->footnotes = '[]';
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return $prepared_post;
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}
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add_filter( 'rest_pre_insert_post', '_wp_rest_api_force_autosave_difference', 10, 2 );
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