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-rw-r--r--wp-includes/block-bindings/post-meta.php70
1 files changed, 70 insertions, 0 deletions
diff --git a/wp-includes/block-bindings/post-meta.php b/wp-includes/block-bindings/post-meta.php
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+++ b/wp-includes/block-bindings/post-meta.php
@@ -0,0 +1,70 @@
+<?php
+/**
+ * Post Meta source for the block bindings.
+ *
+ * @since 6.5.0
+ * @package WordPress
+ * @subpackage Block Bindings
+ */
+
+/**
+ * Gets value for Post Meta source.
+ *
+ * @since 6.5.0
+ * @access private
+ *
+ * @param array $source_args Array containing source arguments used to look up the override value.
+ * Example: array( "key" => "foo" ).
+ * @param WP_Block $block_instance The block instance.
+ * @return mixed The value computed for the source.
+ */
+function _block_bindings_post_meta_get_value( array $source_args, $block_instance ) {
+ if ( empty( $source_args['key'] ) ) {
+ return null;
+ }
+
+ if ( empty( $block_instance->context['postId'] ) ) {
+ return null;
+ }
+ $post_id = $block_instance->context['postId'];
+
+ // If a post isn't public, we need to prevent unauthorized users from accessing the post meta.
+ $post = get_post( $post_id );
+ if ( ( ! is_post_publicly_viewable( $post ) && ! current_user_can( 'read_post', $post_id ) ) || post_password_required( $post ) ) {
+ return null;
+ }
+
+ // Check if the meta field is protected.
+ if ( is_protected_meta( $source_args['key'], 'post' ) ) {
+ return null;
+ }
+
+ // Check if the meta field is registered to be shown in REST.
+ $meta_keys = get_registered_meta_keys( 'post', $block_instance->context['postType'] );
+ // Add fields registered for all subtypes.
+ $meta_keys = array_merge( $meta_keys, get_registered_meta_keys( 'post', '' ) );
+ if ( empty( $meta_keys[ $source_args['key'] ]['show_in_rest'] ) ) {
+ return null;
+ }
+
+ return get_post_meta( $post_id, $source_args['key'], true );
+}
+
+/**
+ * Registers Post Meta source in the block bindings registry.
+ *
+ * @since 6.5.0
+ * @access private
+ */
+function _register_block_bindings_post_meta_source() {
+ register_block_bindings_source(
+ 'core/post-meta',
+ array(
+ 'label' => _x( 'Post Meta', 'block bindings source' ),
+ 'get_value_callback' => '_block_bindings_post_meta_get_value',
+ 'uses_context' => array( 'postId', 'postType' ),
+ )
+ );
+}
+
+add_action( 'init', '_register_block_bindings_post_meta_source' );