|
1 <?php |
|
2 /** |
|
3 * Post Meta source for the block bindings. |
|
4 * |
|
5 * @since 6.5.0 |
|
6 * @package WordPress |
|
7 * @subpackage Block Bindings |
|
8 */ |
|
9 |
|
10 /** |
|
11 * Gets value for Post Meta source. |
|
12 * |
|
13 * @since 6.5.0 |
|
14 * @access private |
|
15 * |
|
16 * @param array $source_args Array containing source arguments used to look up the override value. |
|
17 * Example: array( "key" => "foo" ). |
|
18 * @param WP_Block $block_instance The block instance. |
|
19 * @return mixed The value computed for the source. |
|
20 */ |
|
21 function _block_bindings_post_meta_get_value( array $source_args, $block_instance ) { |
|
22 if ( empty( $source_args['key'] ) ) { |
|
23 return null; |
|
24 } |
|
25 |
|
26 if ( empty( $block_instance->context['postId'] ) ) { |
|
27 return null; |
|
28 } |
|
29 $post_id = $block_instance->context['postId']; |
|
30 |
|
31 // If a post isn't public, we need to prevent unauthorized users from accessing the post meta. |
|
32 $post = get_post( $post_id ); |
|
33 if ( ( ! is_post_publicly_viewable( $post ) && ! current_user_can( 'read_post', $post_id ) ) || post_password_required( $post ) ) { |
|
34 return null; |
|
35 } |
|
36 |
|
37 // Check if the meta field is protected. |
|
38 if ( is_protected_meta( $source_args['key'], 'post' ) ) { |
|
39 return null; |
|
40 } |
|
41 |
|
42 // Check if the meta field is registered to be shown in REST. |
|
43 $meta_keys = get_registered_meta_keys( 'post', $block_instance->context['postType'] ); |
|
44 // Add fields registered for all subtypes. |
|
45 $meta_keys = array_merge( $meta_keys, get_registered_meta_keys( 'post', '' ) ); |
|
46 if ( empty( $meta_keys[ $source_args['key'] ]['show_in_rest'] ) ) { |
|
47 return null; |
|
48 } |
|
49 |
|
50 return get_post_meta( $post_id, $source_args['key'], true ); |
|
51 } |
|
52 |
|
53 /** |
|
54 * Registers Post Meta source in the block bindings registry. |
|
55 * |
|
56 * @since 6.5.0 |
|
57 * @access private |
|
58 */ |
|
59 function _register_block_bindings_post_meta_source() { |
|
60 register_block_bindings_source( |
|
61 'core/post-meta', |
|
62 array( |
|
63 'label' => _x( 'Post Meta', 'block bindings source' ), |
|
64 'get_value_callback' => '_block_bindings_post_meta_get_value', |
|
65 'uses_context' => array( 'postId', 'postType' ), |
|
66 ) |
|
67 ); |
|
68 } |
|
69 |
|
70 add_action( 'init', '_register_block_bindings_post_meta_source' ); |