Renders the meta boxes forms.
Source
function the_block_editor_meta_boxes() {
global $post, $current_screen, $wp_meta_boxes;
// Handle meta box state.
$_original_meta_boxes = $wp_meta_boxes;
/**
* Fires right before the meta boxes are rendered.
*
* This allows for the filtering of meta box data, that should already be
* present by this point. Do not use as a means of adding meta box data.
*
* @since 5.0.0
*
* @param array $wp_meta_boxes Global meta box state.
*/
$wp_meta_boxes = apply_filters( 'filter_block_editor_meta_boxes', $wp_meta_boxes );
$locations = array( 'side', 'normal', 'advanced' );
$priorities = array( 'high', 'sorted', 'core', 'default', 'low' );
// Render meta boxes.
?>
<form class="metabox-base-form">
<?php the_block_editor_meta_box_post_form_hidden_fields( $post ); ?>
</form>
<form id="toggle-custom-fields-form" method="post" action="<?php echo esc_url( admin_url( 'post.php' ) ); ?>">
<?php wp_nonce_field( 'toggle-custom-fields', 'toggle-custom-fields-nonce' ); ?>
<input type="hidden" name="action" value="toggle-custom-fields" />
</form>
<?php foreach ( $locations as $location ) : ?>
<form class="metabox-location-<?php echo esc_attr( $location ); ?>" onsubmit="return false;">
<div id="poststuff" class="sidebar-open">
<div id="postbox-container-2" class="postbox-container">
<?php
do_meta_boxes(
$current_screen,
$location,
$post
);
?>
</div>
</div>
</form>
<?php endforeach; ?>
<?php
$meta_boxes_per_location = array();
foreach ( $locations as $location ) {
$meta_boxes_per_location[ $location ] = array();
if ( ! isset( $wp_meta_boxes[ $current_screen->id ][ $location ] ) ) {
continue;
}
foreach ( $priorities as $priority ) {
if ( ! isset( $wp_meta_boxes[ $current_screen->id ][ $location ][ $priority ] ) ) {
continue;
}
$meta_boxes = (array) $wp_meta_boxes[ $current_screen->id ][ $location ][ $priority ];
foreach ( $meta_boxes as $meta_box ) {
if ( false === $meta_box || ! $meta_box['title'] ) {
continue;
}
// If a meta box is just here for back compat, don't show it in the block editor.
if ( isset( $meta_box['args']['__back_compat_meta_box'] ) && $meta_box['args']['__back_compat_meta_box'] ) {
continue;
}
$meta_boxes_per_location[ $location ][] = array(
'id' => $meta_box['id'],
'title' => $meta_box['title'],
);
}
}
}
/*
* Sadly we probably cannot add this data directly into editor settings.
*
* Some meta boxes need `admin_head` to fire for meta box registry.
* `admin_head` fires after `admin_enqueue_scripts`, which is where we create
* our editor instance.
*/
$script = 'window._wpLoadBlockEditor.then( function() {
wp.data.dispatch( \'core/edit-post\' ).setAvailableMetaBoxesPerLocation( ' . wp_json_encode( $meta_boxes_per_location ) . ' );
} );';
wp_add_inline_script( 'wp-edit-post', $script );
/*
* When `wp-edit-post` is output in the `<head>`, the inline script needs to be manually printed.
* Otherwise, meta boxes will not display because inline scripts for `wp-edit-post`
* will not be printed again after this point.
*/
if ( wp_script_is( 'wp-edit-post', 'done' ) ) {
printf( "<script type='text/javascript'>\n%s\n</script>\n", trim( $script ) );
}
/*
* If the 'postcustom' meta box is enabled, then we need to perform
* some extra initialization on it.
*/
$enable_custom_fields = (bool) get_user_meta( get_current_user_id(), 'enable_custom_fields', true );
if ( $enable_custom_fields ) {
$script = "( function( $ ) {
if ( $('#postcustom').length ) {
$( '#the-list' ).wpList( {
addBefore: function( s ) {
s.data += '&post_id=$post->ID';
return s;
},
addAfter: function() {
$('table#list-table').show();
}
});
}
} )( jQuery );";
wp_enqueue_script( 'wp-lists' );
wp_add_inline_script( 'wp-lists', $script );
}
/*
* Refresh nonces used by the meta box loader.
*
* The logic is very similar to that provided by post.js for the classic editor.
*/
$script = "( function( $ ) {
var check, timeout;
function schedule() {
check = false;
window.clearTimeout( timeout );
timeout = window.setTimeout( function() { check = true; }, 300000 );
}
$( document ).on( 'heartbeat-send.wp-refresh-nonces', function( e, data ) {
var post_id, \$authCheck = $( '#wp-auth-check-wrap' );
if ( check || ( \$authCheck.length && ! \$authCheck.hasClass( 'hidden' ) ) ) {
if ( ( post_id = $( '#post_ID' ).val() ) && $( '#_wpnonce' ).val() ) {
data['wp-refresh-metabox-loader-nonces'] = {
post_id: post_id
};
}
}
}).on( 'heartbeat-tick.wp-refresh-nonces', function( e, data ) {
var nonces = data['wp-refresh-metabox-loader-nonces'];
if ( nonces ) {
if ( nonces.replace ) {
if ( nonces.replace.metabox_loader_nonce && window._wpMetaBoxUrl && wp.url ) {
window._wpMetaBoxUrl= wp.url.addQueryArgs( window._wpMetaBoxUrl, { 'meta-box-loader-nonce': nonces.replace.metabox_loader_nonce } );
}
if ( nonces.replace._wpnonce ) {
$( '#_wpnonce' ).val( nonces.replace._wpnonce );
}
}
}
}).ready( function() {
schedule();
});
} )( jQuery );";
wp_add_inline_script( 'heartbeat', $script );
// Reset meta box data.
$wp_meta_boxes = $_original_meta_boxes;
}
Hooks
- apply_filters( ‘filter_block_editor_meta_boxes’,
array $wp_meta_boxes ) Fires right before the meta boxes are rendered.
Changelog
| Version | Description |
|---|---|
| 5.0.0 | Introduced. |
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