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 ( count( $footnotes ) === 0 ) {
return '';
}
$wrapper_attributes = get_block_wrapper_attributes();
$block_content = '';
foreach ( $footnotes as $footnote ) {
$block_content .= sprintf(
'%2$s ↩︎',
$footnote['id'],
$footnote['content']
);
}
return sprintf(
'%2$s
',
$wrapper_attributes,
$block_content
);
}
/**
* Registers the `core/footnotes` block on the server.
*/
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' );