"More From This Author" Block

add_action( 'init', function () {
    wp_register_script( 'wpide-block-more-from-author', false, array( 'wp-blocks', 'wp-element', 'wp-block-editor', 'wp-components', 'wp-server-side-render' ), '1.0', true );
    wp_add_inline_script( 'wpide-block-more-from-author', <<<'JS'
( function ( wp ) {
    var el = wp.element.createElement;
    wp.blocks.registerBlockType( 'wpide/more-from-author', {
        apiVersion: 3,
        title: 'More From This Author',
        icon: 'admin-users',
        category: 'theme',
        usesContext: [ 'postId' ],
        attributes: { count: { type: 'number', default: 3 } },
        edit: function ( props ) {
            return el( 'div', wp.blockEditor.useBlockProps(),
                el( wp.blockEditor.InspectorControls, null,
                    el( wp.components.PanelBody, { title: 'Settings' },
                        el( wp.components.RangeControl, { label: 'Number of posts', min: 1, max: 10, value: props.attributes.count, onChange: function ( v ) { props.setAttributes( { count: v } ); } } )
                    )
                ),
                el( wp.serverSideRender, { block: 'wpide/more-from-author', attributes: props.attributes, urlQueryArgs: { post_id: props.context.postId || 0 } } )
            );
        },
        save: function () { return null; }
    } );
} )( window.wp );
JS
    );

    register_block_type( 'wpide/more-from-author', array(
        'api_version'           => 3,
        'title'                 => 'More From This Author',
        'category'              => 'theme',
        'uses_context'          => array( 'postId' ),
        'editor_script_handles' => array( 'wpide-block-more-from-author' ),
        'attributes'            => array( 'count' => array( 'type' => 'number', 'default' => 3 ) ),
        'render_callback'       => function ( $attributes, $content, $block ) {
            $post_id = ! empty( $block->context['postId'] ) ? (int) $block->context['postId'] : get_the_ID();
            $author  = (int) get_post_field( 'post_author', $post_id );
            if ( ! $author ) {
                return '';
            }

            $posts = get_posts( array(
                'author'         => $author,
                'post__not_in'   => array( $post_id ),
                'posts_per_page' => max( 1, min( 10, (int) $attributes['count'] ) ),
                'no_found_rows'  => true,
            ) );
            if ( ! $posts ) {
                return '';
            }

            $items = '';
            foreach ( $posts as $post ) {
                $items .= sprintf( '<li><a href="%s">%s</a></li>', esc_url( get_permalink( $post ) ), esc_html( get_the_title( $post ) ) );
            }

            return sprintf(
                '<div %s><h2 class="wp-block-heading">%s</h2><ul>%s</ul></div>',
                get_block_wrapper_attributes( array( 'class' => 'wpide-more-from-author' ) ),
                esc_html( sprintf( 'More from %s', get_the_author_meta( 'display_name', $author ) ) ),
                $items
            );
        },
    ) );
} );