Post Types: Introduce `unregister_post_type()`.

This new function can be used to completely unregister non built-in post types.

Fixes #14761.
Built from https://develop.svn.wordpress.org/trunk@36316


git-svn-id: http://core.svn.wordpress.org/trunk@36283 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Pascal Birchler 2016-01-15 12:20:27 +00:00
parent a6aa15a445
commit 68f12521c8
3 changed files with 93 additions and 9 deletions

View File

@ -16,6 +16,8 @@
*
* @since 2.0.0
*
* @global array $post_type_meta_caps Used to get post type meta capabilities.
*
* @param string $cap Capability name.
* @param int $user_id User ID.
* @param int $object_id Optional. ID of the specific object to check against if `$cap` is a "meta" cap.
@ -377,7 +379,7 @@ function map_meta_cap( $cap, $user_id ) {
break;
default:
// Handle meta capabilities for custom post types.
$post_type_meta_caps = _post_type_meta_capabilities();
global $post_type_meta_caps;
if ( isset( $post_type_meta_caps[ $cap ] ) ) {
$args = array_merge( array( $post_type_meta_caps[ $cap ], $user_id ), $args );
return call_user_func_array( 'map_meta_cap', $args );

View File

@ -1186,6 +1186,88 @@ function register_post_type( $post_type, $args = array() ) {
return $args;
}
/**
* Unregister a post type.
*
* Can not be used to unregister built-in post types.
*
* @since 4.5.0
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
* @global WP $wp Current WordPress environment instance.
* @global array $_wp_post_type_features Used to remove post type features.
* @global array $post_type_meta_caps Used to remove meta capabilities.
* @global array $wp_post_types List of post types.
*
* @param string $post_type Post type key.
* @return bool|WP_Error True on success, WP_Error on failure.
*/
function unregister_post_type( $post_type ) {
if ( ! post_type_exists( $post_type ) ) {
return new WP_Error( 'invalid_post_type', __( 'Invalid post type' ) );
}
$post_type_args = get_post_type_object( $post_type );
// Do not allow unregistering internal post types.
if ( $post_type_args->_builtin ) {
return new WP_Error( 'invalid_post_type', __( 'Unregistering a built-in post type is not allowed' ) );
}
global $wp, $wp_rewrite, $_wp_post_type_features, $post_type_meta_caps, $wp_post_types;
// Remove query var.
if ( false !== $post_type_args->query_var ) {
$wp->remove_query_var( $post_type_args->query_var );
}
// Remove any rewrite rules, permastructs, and rules.
if ( false !== $post_type_args->rewrite ) {
remove_rewrite_tag( "%$post_type%" );
remove_permastruct( $post_type );
foreach ( $wp_rewrite->extra_rules_top as $regex => $query ) {
if ( false !== strpos( $query, "index.php?post_type=$post_type" ) ) {
unset( $wp_rewrite->extra_rules_top[ $regex ] );
}
}
}
// Remove registered custom meta capabilities.
foreach ( $post_type_args->cap as $cap ) {
unset( $post_type_meta_caps[ $cap ] );
}
// Remove all post type support.
unset( $_wp_post_type_features[ $post_type ] );
// Unregister the post type meta box if a custom callback was specified.
if ( $post_type_args->register_meta_box_cb ) {
remove_action( 'add_meta_boxes_' . $post_type, $post_type_args->register_meta_box_cb );
}
// Remove the post type from all taxonomies.
foreach ( get_object_taxonomies( $post_type ) as $taxonomy ) {
unregister_taxonomy_for_object_type( $taxonomy, $post_type );
}
// Remove the future post hook action.
remove_action( 'future_' . $post_type, '_future_post_hook', 5 );
// Remove the post type.
unset( $wp_post_types[ $post_type ] );
/**
* Fires after a post type was unregistered.
*
* @since 4.5.0
*
* @param string $post_type Post type key.
*/
do_action( 'unregistered_post_type', $post_type );
return true;
}
/**
* Build an object with all post type capabilities out of a post type object
*
@ -1293,17 +1375,17 @@ function get_post_type_capabilities( $args ) {
* @since 3.1.0
* @access private
*
* @staticvar array $meta_caps
* @global array $post_type_meta_caps Used to store meta capabilities.
*
* @param array|void $capabilities Post type meta capabilities.
* @param array $capabilities Post type meta capabilities.
*/
function _post_type_meta_capabilities( $capabilities = null ) {
static $meta_caps = array();
if ( null === $capabilities )
return $meta_caps;
global $post_type_meta_caps;
foreach ( $capabilities as $core => $custom ) {
if ( in_array( $core, array( 'read_post', 'delete_post', 'edit_post' ) ) )
$meta_caps[ $custom ] = $core;
if ( in_array( $core, array( 'read_post', 'delete_post', 'edit_post' ) ) ) {
$post_type_meta_caps[ $custom ] = $core;
}
}
}

View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.5-alpha-1452858852281';
$wp_version = '4.5-alpha-1452860412907';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.