REST API: Issue warning if array meta is registered without item schema.

The purpose of meta registration is to assert that the meta key will contain a predictable value conforming to a schema, so the schema is therefore considered to be required.

Props TimothyBlynJacobs, grapplerulrich.
Fixes #43392.


git-svn-id: https://develop.svn.wordpress.org/trunk@46186 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
K. Adam White 2019-09-19 14:35:47 +00:00
parent 3514a52019
commit 84dfea907f
2 changed files with 84 additions and 11 deletions

View File

@ -1115,23 +1115,27 @@ function sanitize_meta( $meta_key, $meta_value, $object_type, $object_subtype =
* to support an array of data to attach to registered meta keys}. Previous arguments for
* `$sanitize_callback` and `$auth_callback` have been folded into this array.
* @since 4.9.8 The `$object_subtype` argument was added to the arguments array.
* @since 5.3.0 Valid meta types expanded to include "array" and "object".
*
* @param string $object_type Type of object this meta is registered to.
* @param string $meta_key Meta key to register.
* @param array $args {
* Data used to describe the meta key when registered.
*
* @type string $object_subtype A subtype; e.g. if the object type is "post", the post type. If left empty,
* the meta key will be registered on the entire object type. Default empty.
* @type string $type The type of data associated with this meta key.
* Valid values are 'string', 'boolean', 'integer', and 'number'.
* @type string $description A description of the data attached to this meta key.
* @type bool $single Whether the meta key has one value per object, or an array of values per object.
* @type string $sanitize_callback A function or method to call when sanitizing `$meta_key` data.
* @type string $auth_callback Optional. A function or method to call when performing edit_post_meta, add_post_meta, and delete_post_meta capability checks.
* @type bool $show_in_rest Whether data associated with this meta key can be considered public and
* should be accessible via the REST API. A custom post type must also declare
* support for custom fields for registered meta to be accessible via REST.
* @type string $object_subtype A subtype; e.g. if the object type is "post", the post type. If left empty,
* the meta key will be registered on the entire object type. Default empty.
* @type string $type The type of data associated with this meta key.
* Valid values are 'string', 'boolean', 'integer', 'number', 'array', and 'object'.
* @type string $description A description of the data attached to this meta key.
* @type bool $single Whether the meta key has one value per object, or an array of values per object.
* @type string $sanitize_callback A function or method to call when sanitizing `$meta_key` data.
* @type string $auth_callback Optional. A function or method to call when performing edit_post_meta,
* add_post_meta, and delete_post_meta capability checks.
* @type bool|array $show_in_rest Whether data associated with this meta key can be considered public and
* should be accessible via the REST API. A custom post type must also declare
* support for custom fields for registered meta to be accessible via REST.
* When registering complex meta values this argument may optionally be an
* array with 'schema' or 'prepare_callback' keys instead of a boolean.
* }
* @param string|array $deprecated Deprecated. Use `$args` instead.
*
@ -1188,6 +1192,15 @@ function register_meta( $object_type, $meta_key, $args, $deprecated = null ) {
$args = apply_filters( 'register_meta_args', $args, $defaults, $object_type, $meta_key );
$args = wp_parse_args( $args, $defaults );
// Require an item schema when registering array meta.
if ( false !== $args['show_in_rest'] && 'array' === $args['type'] ) {
if ( ! is_array( $args['show_in_rest'] ) || ! isset( $args['show_in_rest']['schema']['items'] ) ) {
_doing_it_wrong( __FUNCTION__, __( 'When registering an "array" meta type to show in the REST API, you must specify the schema for each array item in "show_in_rest.schema.items".' ), '5.3.0' );
return false;
}
}
$object_subtype = ! empty( $args['object_subtype'] ) ? $args['object_subtype'] : '';
// If `auth_callback` is not provided, fall back to `is_protected_meta()`.

View File

@ -2204,6 +2204,66 @@ class WP_Test_REST_Post_Meta_Fields extends WP_Test_REST_TestCase {
$this->assertEquals( array( 'project' => 'WordCamp' ), $data['meta']['object'] );
}
/**
* @ticket 43392
*/
public function test_register_meta_issues_doing_it_wrong_when_show_in_rest_is_true() {
$this->setExpectedIncorrectUsage( 'register_meta' );
$registered = register_meta(
'post',
'invalid_array',
array(
'type' => 'array',
'show_in_rest' => true,
)
);
self::assertFalse( $registered );
}
/**
* @ticket 43392
*/
public function test_register_meta_issues_doing_it_wrong_when_show_in_rest_omits_schema() {
$this->setExpectedIncorrectUsage( 'register_meta' );
$registered = register_meta(
'post',
'invalid_array',
array(
'type' => 'array',
'show_in_rest' => array(
'prepare_callback' => 'rest_sanitize_value_from_schema',
),
)
);
self::assertFalse( $registered );
}
/**
* @ticket 43392
*/
public function test_register_meta_issues_doing_it_wrong_when_show_in_rest_omits_schema_items() {
$this->setExpectedIncorrectUsage( 'register_meta' );
$registered = register_meta(
'post',
'invalid_array',
array(
'type' => 'array',
'show_in_rest' => array(
'schema' => array(
'default' => array( 'Hi!' ),
),
),
)
);
self::assertFalse( $registered );
}
/**
* Internal function used to disable an insert query which
* will trigger a wpdb error for testing purposes.