The Bifrost Music plugin registers two custom post types: music_artist and music_album. These post types enable structured content management for music artists and their albums.
Music Artist Post Type The Artist post type (music_artist) represents individual music artists or bands.
Registration Registered in inc/Content/Artist.php:43
register_post_type ( Definitions :: POST_TYPE_ARTIST , [ 'description' => '' , 'public' => true , 'publicly_queryable' => true , 'show_in_nav_menus' => true , 'show_in_admin_bar' => true , 'exclude_from_search' => false , 'show_in_rest' => true , 'show_ui' => true , 'show_in_menu' => true , 'menu_position' => 21 , 'menu_icon' => 'dashicons-id' , 'can_export' => true , 'delete_with_user' => false , 'hierarchical' => false , 'has_archive' => 'artists' , 'query_var' => Definitions :: POST_TYPE_ARTIST , 'capability_type' => Definitions :: POST_TYPE_ARTIST , 'map_meta_cap' => true , // ... additional parameters ]);
Parameters post_type
string
default: "music_artist"
The post type identifier
Whether the post type is intended for public use
Enables the REST API endpoint at /wp-json/wp/v2/music_artist
Artists are non-hierarchical (like posts, not pages)
Archive page slug accessible at /artists
Position in admin menu (appears after Dashboard)
Dashicon class for the admin menu
Capabilities
The music_artist post type uses custom capabilities for fine-grained permission control: 'edit_post' => 'edit_music_artist' , 'read_post' => 'read_music_artist' , 'delete_post' => 'delete_music_artist' ,
Primitive Capabilities 'create_posts' => 'create_music_artists' , 'edit_posts' => 'edit_music_artists' , 'edit_others_posts' => 'edit_others_music_artists' , 'publish_posts' => 'publish_music_artists' , 'read_private_posts' => 'read_private_music_artists' , 'delete_posts' => 'delete_music_artists' , 'delete_private_posts' => 'delete_private_music_artists' , 'delete_published_posts' => 'delete_published_music_artists' , 'delete_others_posts' => 'delete_others_music_artists' , 'edit_private_posts' => 'edit_private_music_artists' , 'edit_published_posts' => 'edit_published_music_artists'
Source: inc/Content/Artist.php:64-87 Supported Features The Artist post type supports the following features:
'supports' => [ 'title' , 'editor' , 'excerpt' , 'author' , 'custom-fields' , 'thumbnail' ]
Editor Rich text editor for artist biography
Excerpt Short artist description
Author Track which user created the artist
Custom Fields Support for additional metadata
Thumbnail Featured image (artist photo)
URL Rewrite Rules 'rewrite' => [ 'slug' => 'artists' , 'with_front' => false , 'pages' => true , 'feeds' => true , 'ep_mask' => EP_PERMALINK , ]
Artist URLs follow the pattern: /artists/{artist-slug}
Music Album Post Type The Album post type (music_album) represents music albums associated with artists.
Registration Registered in inc/Content/Album.php:51
register_post_type ( Definitions :: POST_TYPE_ALBUM , [ 'description' => '' , 'public' => true , 'publicly_queryable' => true , 'show_in_nav_menus' => true , 'show_in_admin_bar' => true , 'exclude_from_search' => false , 'show_in_rest' => true , 'show_ui' => true , 'show_in_menu' => true , 'menu_position' => 22 , 'menu_icon' => 'dashicons-playlist-audio' , 'can_export' => true , 'delete_with_user' => false , 'hierarchical' => false , 'has_archive' => 'albums' , 'query_var' => Definitions :: POST_TYPE_ALBUM , 'capability_type' => Definitions :: POST_TYPE_ALBUM , 'map_meta_cap' => true , // ... additional parameters ]);
Parameters post_type
string
default: "music_album"
The post type identifier
Whether the post type is intended for public use
Enables the REST API endpoint at /wp-json/wp/v2/music_album
Albums are non-hierarchical, but use parent field for artist relationships
Archive page slug accessible at /albums
Position in admin menu (appears after Artists)
Dashicon class for the admin menu
Capabilities
The music_album post type uses custom capabilities: 'edit_post' => 'edit_music_album' , 'read_post' => 'read_music_album' , 'delete_post' => 'delete_music_album' ,
Primitive Capabilities 'create_posts' => 'create_music_albums' , 'edit_posts' => 'edit_music_albums' , 'edit_others_posts' => 'edit_others_music_albums' , 'publish_posts' => 'publish_music_albums' , 'read_private_posts' => 'read_private_music_albums' , 'delete_posts' => 'delete_music_albums' , 'delete_private_posts' => 'delete_private_music_albums' , 'delete_published_posts' => 'delete_published_music_albums' , 'delete_others_posts' => 'delete_others_music_albums' , 'edit_private_posts' => 'edit_private_music_albums' , 'edit_published_posts' => 'edit_published_music_albums'
Source: inc/Content/Album.php:72-95 Supported Features The Album post type supports the same features as Artist:
'supports' => [ 'title' , 'editor' , 'excerpt' , 'author' , 'custom-fields' , 'thumbnail' ]
Editor Rich text editor for album description
Excerpt Short album summary
Author Track which user created the album
Custom Fields Support for additional metadata
Thumbnail Featured image (album cover art)
URL Rewrite Rules 'rewrite' => [ 'slug' => 'albums' , 'with_front' => false , 'pages' => true , 'feeds' => true , 'ep_mask' => EP_PERMALINK , ]
Album URLs follow the pattern: /albums/{album-slug}
Parent-Child Relationships Although music_album is non-hierarchical, albums maintain parent-child relationships with artists using the post_parent field. This is exposed through the REST API (see REST API documentation ).
Admin Interface Customizations Both post types include custom admin interface enhancements:
Custom Title Placeholder
private function enterTitleHere ( string $title , WP_Post $post ) : string { return Definitions :: POST_TYPE_ARTIST === $post -> post_type ? esc_html__ ( 'Enter artist title' , 'bifrost-music' ) : $title ; }
Source: inc/Content/Artist.php:141-146
private function enterTitleHere ( string $title , WP_Post $post ) : string { return Definitions :: POST_TYPE_ALBUM === $post -> post_type ? esc_html__ ( 'Enter album title' , 'bifrost-music' ) : $title ; }
Source: inc/Content/Album.php:169-174 Album Admin Columns The Album post type adds a custom “Artist” column to the admin list table:
private function addParentColumn ( array $columns ) : array { $new_columns = []; foreach ( $columns as $key => $value ) { $new_columns [ $key ] = $value ; // Add parent column after title if ( 'title' === $key ) { $new_columns [ 'parent_artist' ] = __ ( 'Artist' , 'bifrost-music' ); } } return $new_columns ; }
Source: inc/Content/Album.php:237-251
The column is sortable and displays a link to the parent artist. 