Description

Let’s you add more than one author to your posts.

Optionally extends the byline your theme already renders – see the FAQ.

Arbitrary section

Screenshots

The Additional Authors panel in the block editor sidebar: search for a user, and the ones you picked are listed below with a button to remove them again.

Blocks

This plugin provides 2 blocks.

Author Archive Title Displays the Title of an author in archives.
Author Archive Biography Displays the biography of an author in archives.

Installation

Upload additional-authors-wordpress.zip to the /wp-content/plugins/ directory
Extract the Plugin to a Additional Authors Folder
Activate the plugin through the ‘Plugins’ menu in WordPress

FAQ

The additional authors do not show up in my theme

By default the plugin only stores them; the output is up to the theme, through
do_action( ‘additional_authors_the_authors’ ). Since 1.4.0 it can also extend the
byline a standard theme already renders:

add_filter( 'additional_authors_auto_byline', '__return_true' );

That covers the core/post-author and core/post-author-name blocks used by block
themes such as Twenty Twenty-Four and Twenty Twenty-Five, and the the_author() and
the_author_posts_link() template tags used by classic themes. It is off by default,
because a plugin update should not change what your site outputs.

Two things worth knowing:

Some classic themes — Twenty Twenty-One among them — wrap get_the_author() in a
link they build themselves. The additional names then sit inside that link, which
points at the main author. If per-author links matter to you, output them yourself
with do_action( 'additional_authors_the_authors_posts_links' ) instead.
The core/post-author block is left untouched when its “Show bio” option is on: a
biography belongs to one person, and listing several names above it would read as if
it described all of them.

Can I change how the names are joined?

additional_authors_byline_separator sets the separator (default ,), and
additional_authors_byline_suffix lets you build the whole appended string, for
example to get “Anna, Mark und David”:

add_filter( 'additional_authors_byline_suffix', function ( $suffix, $ids ) {
    $names = array_map( fn( $id ) => get_the_author_meta( 'display_name', $id ), $ids );
    $last  = array_pop( $names );
    return ( $names ? ', ' . implode( ', ', $names ) : '' ) . ' und ' . $last;
}, 10, 2 );

Reviews

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Contributors & Developers

“Additional Authors” is open source software. The following people have contributed to this plugin.

“Additional Authors” has been translated into 1 locale. Thank you to the translators for their contributions.

Translate “Additional Authors” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

1.4.0

Features
* optionally extend the byline a standard theme renders (cffb64c)

Bug Fixes
* point the All authors column at the right users (8567bd1)
* repair the post-count endpoint and the users list column (aa3416a)
* stop contributors from creating accounts and reassigning posts (2e19c60)

1.3.9

Fix: Include build in pipeline

1.3.8

Add gutenberg blocks to support archive pages

1.3.7

Rework File Structure

1.3.6

Added additional Filter

1.3.5

Fix: PHP 8.2 warnings
Fix: double slash in asset urls
Packages update

1.3.3

Packages update

1.3.2

WordPress Core compatibility fix
Packages update

1.3.1

Update: JS packages update

1.3.0

Feature: Show posts count on users table with additional author posts inclusive

1.2.13

Bugfix: Post type may be array on change post count hook

1.2.12

Optimization: Post table all authors list
Bugfix: Delete user crash

1.2.11

Optimization: Add admins and editors to additional author dropdown

1.2.10

Bugfix: Additional authors script broke reusable block editor

1.2.9

Optimization: autocomplete search case insensitive
Optimization: click outside hides dropdown

1.2.8

Bugfix: Missing migration script

1.2.7

WP5.7 checked
Bugfix: Database update error

1.2.6

Performance: WP_Query performance optimization
Update: Dependency updates
Bugfix: Cannot delete last additional author from post

1.2.5

Bugfix: Gutenberg no POST index fix

1.2.4

Optimization: only show additional authors im post type supports author feature
Feature: Customizing filter for get_users args in meta box

1.2.3

Optimization: Additional authors are included in has_published_posts WP_User_Query
Feature: New WP_User_Query argument “ignore_published_as_additional_author” for ignoring additional authors with “has_published_posts”

1.2.2

Fix: Query manipulation fix which lead to duplicate posts

1.2.1

Feature: Link to user profile page

1.2.0

Ready for 5.0 and Gutenberg
Optimization: With Gutenberg editor only the additional authors will be visible in post meta box. The post author was removed and needs to be handle with default post edit controls.
Info: post_meta _additional_authors is deprecated and will be will not be saved anymore
Bugfix: Delete user

1.1.5

Bugfix: Add empty additional author fix
Bugfix: Listen to wordpress author field change

1.1.4

BugFix: authors could not be added because of bad timing with onBlur
BugFix: keep order of additional authors
Feature: All WP_Query will use additional authors not only on authors page
Feature: new filter to set the default for ignoring or using additional authors with WP_Query
Optimization: Query manipulation optimization for author page

1.1.3

BugFix: IE11

1.1.2

Extendable meta box

1.1.1

Added Gutenberg support
CSS styles

1.1

Author keys move from postmeta to custom table
SQL Performance optimization

1.0

First release