REST API: Support meta registration for specific object subtypes.

Introduce an `object_subtype` argument to the args array for `register_meta()` which can be used to limit meta registration to a single subtype (e.g. a custom post type or taxonomy, vs all posts or taxonomies).

Introduce `register_post_meta()` and `register_term_meta()` wrapper methods for `register_meta` to provide a convenient interface for the common case of registering meta for a specific taxonomy or post type. These methods work the way plugin developers have often expected `register_meta` to function, and should be used in place of direct `register_meta` where possible.

Props flixos90, tharsheblows, spacedmonkey.
Fixes #38323.



git-svn-id: https://develop.svn.wordpress.org/trunk@43378 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
K. Adam White
2018-06-21 21:06:50 +00:00
parent cdd9910f01
commit a830dbcab3
14 changed files with 1042 additions and 164 deletions

View File

@@ -281,45 +281,9 @@ function map_meta_cap( $cap, $user_id ) {
list( $_, $object_type, $_ ) = explode( '_', $cap );
$object_id = (int) $args[0];
switch ( $object_type ) {
case 'post':
$post = get_post( $object_id );
if ( ! $post ) {
break;
}
$object_subtype = get_object_subtype( $object_type, $object_id );
$sub_type = get_post_type( $post );
break;
case 'comment':
$comment = get_comment( $object_id );
if ( ! $comment ) {
break;
}
$sub_type = empty( $comment->comment_type ) ? 'comment' : $comment->comment_type;
break;
case 'term':
$term = get_term( $object_id );
if ( ! $term instanceof WP_Term ) {
break;
}
$sub_type = $term->taxonomy;
break;
case 'user':
$user = get_user_by( 'id', $object_id );
if ( ! $user ) {
break;
}
$sub_type = 'user';
break;
}
if ( empty( $sub_type ) ) {
if ( empty( $object_subtype ) ) {
$caps[] = 'do_not_allow';
break;
}
@@ -328,55 +292,79 @@ function map_meta_cap( $cap, $user_id ) {
$meta_key = isset( $args[1] ) ? $args[1] : false;
$has_filter = has_filter( "auth_{$object_type}_meta_{$meta_key}" ) || has_filter( "auth_{$object_type}_{$sub_type}_meta_{$meta_key}" );
if ( $meta_key && $has_filter ) {
if ( $meta_key ) {
$allowed = ! is_protected_meta( $meta_key, $object_type );
/**
* Filters whether the user is allowed to edit meta for specific object types.
*
* Return true to have the mapped meta caps from `edit_{$object_type}` apply.
*
* The dynamic portion of the hook name, `$object_type` refers to the object type being filtered.
* The dynamic portion of the hook name, `$meta_key`, refers to the meta key passed to map_meta_cap().
*
* @since 3.3.0 As `auth_post_meta_{$meta_key}`.
* @since 4.6.0
*
* @param bool $allowed Whether the user can add the object meta. Default false.
* @param string $meta_key The meta key.
* @param int $object_id Object ID.
* @param int $user_id User ID.
* @param string $cap Capability name.
* @param string[] $caps Array of the user's capabilities.
*/
$allowed = apply_filters( "auth_{$object_type}_meta_{$meta_key}", false, $meta_key, $object_id, $user_id, $cap, $caps );
if ( ! empty( $object_subtype ) && has_filter( "auth_{$object_type}_meta_{$meta_key}_for_{$object_subtype}" ) ) {
/**
* Filters whether the user is allowed to edit meta for specific object types/subtypes.
*
* Return true to have the mapped meta caps from `edit_{$object_type}` apply.
*
* The dynamic portion of the hook name, `$object_type` refers to the object type being filtered.
* The dynamic portion of the hook name, `$sub_type` refers to the object subtype being filtered.
* The dynamic portion of the hook name, `$meta_key`, refers to the meta key passed to map_meta_cap().
*
* @since 4.6.0 As `auth_post_{$post_type}_meta_{$meta_key}`.
* @since 4.7.0
*
* @param bool $allowed Whether the user can add the object meta. Default false.
* @param string $meta_key The meta key.
* @param int $object_id Object ID.
* @param int $user_id User ID.
* @param string $cap Capability name.
* @param string[] $caps Array of the user's capabilities.
*/
$allowed = apply_filters( "auth_{$object_type}_{$sub_type}_meta_{$meta_key}", $allowed, $meta_key, $object_id, $user_id, $cap, $caps );
/**
* Filters whether the user is allowed to edit a specific meta key of a specific object type and subtype.
*
* The dynamic portions of the hook name, `$object_type`, `$meta_key`,
* and `$object_subtype`, refer to the metadata object type (comment, post, term or user),
* the meta key value, and the object subtype respectively.
*
* @since 5.0.0
*
* @param bool $allowed Whether the user can add the object meta. Default false.
* @param string $meta_key The meta key.
* @param int $object_id Object ID.
* @param int $user_id User ID.
* @param string $cap Capability name.
* @param string[] $caps Array of the user's capabilities.
*/
$allowed = apply_filters( "auth_{$object_type}_meta_{$meta_key}_for_{$object_subtype}", $allowed, $meta_key, $object_id, $user_id, $cap, $caps );
} else {
/**
* Filters whether the user is allowed to edit a specific meta key of a specific object type.
*
* Return true to have the mapped meta caps from `edit_{$object_type}` apply.
*
* The dynamic portion of the hook name, `$object_type` refers to the object type being filtered.
* The dynamic portion of the hook name, `$meta_key`, refers to the meta key passed to map_meta_cap().
*
* @since 3.3.0 As `auth_post_meta_{$meta_key}`.
* @since 4.6.0
*
* @param bool $allowed Whether the user can add the object meta. Default false.
* @param string $meta_key The meta key.
* @param int $object_id Object ID.
* @param int $user_id User ID.
* @param string $cap Capability name.
* @param string[] $caps Array of the user's capabilities.
*/
$allowed = apply_filters( "auth_{$object_type}_meta_{$meta_key}", $allowed, $meta_key, $object_id, $user_id, $cap, $caps );
}
if ( ! empty( $object_subtype ) ) {
/**
* Filters whether the user is allowed to edit meta for specific object types/subtypes.
*
* Return true to have the mapped meta caps from `edit_{$object_type}` apply.
*
* The dynamic portion of the hook name, `$object_type` refers to the object type being filtered.
* The dynamic portion of the hook name, `$object_subtype` refers to the object subtype being filtered.
* The dynamic portion of the hook name, `$meta_key`, refers to the meta key passed to map_meta_cap().
*
* @since 4.6.0 As `auth_post_{$post_type}_meta_{$meta_key}`.
* @since 4.7.0
* @deprecated 5.0.0 Use `auth_{$object_type}_meta_{$meta_key}_for_{$object_subtype}`
*
* @param bool $allowed Whether the user can add the object meta. Default false.
* @param string $meta_key The meta key.
* @param int $object_id Object ID.
* @param int $user_id User ID.
* @param string $cap Capability name.
* @param string[] $caps Array of the user's capabilities.
*/
$allowed = apply_filters_deprecated( "auth_{$object_type}_{$object_subtype}_meta_{$meta_key}", array( $allowed, $meta_key, $object_id, $user_id, $cap, $caps ), '5.0.0', "auth_{$object_type}_meta_{$meta_key}_for_{$object_subtype}" );
}
if ( ! $allowed ) {
$caps[] = $cap;
}
} elseif ( $meta_key && is_protected_meta( $meta_key, $object_type ) ) {
$caps[] = $cap;
}
break;
case 'edit_comment':