Add post author biography block

docs/reference-guides/core-blocks.md

@@ -440,6 +440,15 @@ Display post author details such as name, avatar, and bio. ([Source](https://git
 -	**Supports:** color (background, gradients, link, text), spacing (margin, padding), typography (fontSize, lineHeight), ~~html~~
 -	**Attributes:** avatarSize, byline, showAvatar, showBio, textAlign
 
+## Post Author Biography
+
+The author biography. ([Source](https://github.com/WordPress/gutenberg/tree/trunk/packages/block-library/src/post-author-biography))
+
+-	**Name:** core/post-author-biography
+-	**Category:** theme
+-	**Supports:** color (background, gradients, link, text), spacing (margin, padding), typography (fontSize, lineHeight)
+-	**Attributes:** textAlign
+
 ## Post Author Name
 
 The author name. ([Source](https://github.com/WordPress/gutenberg/tree/trunk/packages/block-library/src/post-author-name))

lib/blocks.php

@@ -83,6 +83,7 @@ function gutenberg_reregister_core_block_types() {
 				'pattern.php'                      => 'core/pattern',
 				'post-author.php'                  => 'core/post-author',
 				'post-author-name.php'             => 'core/post-author-name',
+				'post-author-biography.php'        => 'core/post-author-biography',
 				'post-comment.php'                 => 'core/post-comment',
 				'post-comments.php'                => 'core/post-comments',
 				'post-comments-count.php'          => 'core/post-comments-count',

packages/block-library/src/index.js

@@ -60,6 +60,7 @@ import * as pageList from './page-list';
 import * as paragraph from './paragraph';
 import * as postAuthor from './post-author';
 import * as postAuthorName from './post-author-name';
+import * as postAuthorBiography from './post-author-biography';
 import * as postComment from './post-comment';
 import * as postComments from './post-comments';
 import * as postCommentsCount from './post-comments-count';
@@ -204,6 +205,7 @@ export const __experimentalGetCoreBlocks = () => [
 	termDescription,
 	queryTitle,
 	postAuthorName,
+	postAuthorBiography,
 ];
 
 /**

packages/block-library/src/post-author-biography/block.json

@@ -0,0 +1,37 @@
+{
+	"$schema": "https://schemas.wp.org/trunk/block.json",
+	"apiVersion": 2,
+	"name": "core/post-author-biography",
+	"title": "Post Author Biography",
+	"category": "theme",
+	"description": "The author biography.",
+	"textdomain": "default",
+	"attributes": {
+		"textAlign": {
+			"type": "string"
+		}
+	},
+	"usesContext": [ "postType", "postId" ],
+	"supports": {
+		"spacing": {
+			"margin": true,
+			"padding": true
+		},
+		"color": {
+			"gradients": true,
+			"link": true
+		},
+		"typography": {
+			"fontSize": true,
+			"lineHeight": true,
+			"__experimentalFontFamily": true,
+			"__experimentalFontWeight": true,
+			"__experimentalFontStyle": true,
+			"__experimentalTextTransform": true,
+			"__experimentalLetterSpacing": true,
+			"__experimentalDefaultControls": {
+				"fontSize": true
+			}
+		}
+	}
+}

packages/block-library/src/post-author-biography/edit.js

@@ -0,0 +1,63 @@
+/**
+ * External dependencies
+ */
+import classnames from 'classnames';
+
+/**
+ * WordPress dependencies
+ */
+import {
+	AlignmentControl,
+	BlockControls,
+	useBlockProps,
+} from '@wordpress/block-editor';
+import { useSelect } from '@wordpress/data';
+import { __ } from '@wordpress/i18n';
+import { store as coreStore } from '@wordpress/core-data';
+
+function PostAuthorBiographyEdit( {
+	context: { postType, postId },
+	attributes: { textAlign },
+	setAttributes,
+} ) {
+	const { authorDetails } = useSelect(
+		( select ) => {
+			const { getEditedEntityRecord, getUser } = select( coreStore );
+			const _authorId = getEditedEntityRecord(
+				'postType',
+				postType,
+				postId
+			)?.author;
+
+			return {
+				authorDetails: _authorId ? getUser( _authorId ) : null,
+			};
+		},
+		[ postType, postId ]
+	);
+
+	const blockProps = useBlockProps( {
+		className: classnames( {
+			[ `has-text-align-${ textAlign }` ]: textAlign,
+		} ),
+	} );
+
+	const displayAuthorBiography =
+		authorDetails?.description || __( 'Author Biography' );
+
+	return (
+		<>
+			<BlockControls group="block">
+				<AlignmentControl
+					value={ textAlign }
+					onChange={ ( nextAlign ) => {
+						setAttributes( { textAlign: nextAlign } );
+					} }
+				/>
+			</BlockControls>
+			<div { ...blockProps }> { displayAuthorBiography } </div>
+		</>
+	);
+}
+
+export default PostAuthorBiographyEdit;

packages/block-library/src/post-author-biography/index.js

@@ -0,0 +1,18 @@
+/**
+ * Internal dependencies
+ */
+import metadata from './block.json';
+import edit from './edit';
+
+/**
+ * WordPress dependencies
+ */
+import { postAuthor as icon } from '@wordpress/icons';
+
+const { name } = metadata;
+export { metadata, name };
+
+export const settings = {
+	icon,
+	edit,
+};

packages/block-library/src/post-author-biography/index.php

@@ -0,0 +1,48 @@
+<?php
+/**
+ * Server-side rendering of the `core/post-author-biography` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/post-author-biography` block on the server.
+ *
+ * @param  array    $attributes Block attributes.
+ * @param  string   $content    Block default content.
+ * @param  WP_Block $block      Block instance.
+ * @return string Returns the rendered post author biography block.
+ */
+function render_block_core_post_author_biography( $attributes, $content, $block ) {
+	if ( ! isset( $block->context['postId'] ) ) {
+		return '';
+	}
+
+	$author_id = get_post_field( 'post_author', $block->context['postId'] );
+	if ( empty( $author_id ) ) {
+		return '';
+	}
+
+	$author_biography = get_the_author_meta( 'description', $author_id );
+	if ( empty( $author_biography ) ) {
+		return '';
+	}
+
+	$align_class_name   = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
+	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );
+
+	return sprintf( '<div %1$s>', $wrapper_attributes ) . $author_biography . '</div>';
+}
+
+/**
+ * Registers the `core/post-author-biography` block on the server.
+ */
+function register_block_core_post_author_biography() {
+	register_block_type_from_metadata(
+		__DIR__ . '/post-author-biography',
+		array(
+			'render_callback' => 'render_block_core_post_author_biography',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_post_author_biography' );

test/integration/fixtures/blocks/core__post-author-biography.html

@@ -0,0 +1 @@
+<!-- wp:post-author-biography /-->

test/integration/fixtures/blocks/core__post-author-biography.json

@@ -0,0 +1,10 @@
+[
+	{
+		"clientId": "_clientId_0",
+		"name": "core/post-author-biography",
+		"isValid": true,
+		"attributes": {},
+		"innerBlocks": [],
+		"originalContent": ""
+	}
+]

test/integration/fixtures/blocks/core__post-author-biography.parsed.json

@@ -0,0 +1,9 @@
+[
+	{
+		"blockName": "core/post-author-biography",
+		"attrs": {},
+		"innerBlocks": [],
+		"innerHTML": "",
+		"innerContent": []
+	}
+]

test/integration/fixtures/blocks/core__post-author-biography.serialized.html

@@ -0,0 +1 @@
+<!-- wp:post-author-biography /-->