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<title>[60539] trunk: Block Bindings: Add `core/post-data` source.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/60539">60539</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/60539","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>Bernhard Reiter</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2025-08-05 13:52:44 +0000 (Tue, 05 Aug 2025)</dd>
</dl>
<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Block Bindings: Add `core/post-data` source.
Add a new Block Bindings source, `core/post-data`, which exposes `date` and `modified` fields for now -- reflecting the publish date and the last modified date of the post, respectively. The source could be subsequently extended to include other fields associated with a post object, such as title, featured image, etc.
Props bernhard-reiter.
Closes <a href="https://core.trac.wordpress.org/ticket/63741">#63741</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesclasswpblockphp">trunk/src/wp-includes/class-wp-block.php</a></li>
<li><a href="#trunksrcwpsettingsphp">trunk/src/wp-settings.php</a></li>
<li><a href="#trunktestsphpunitincludesfunctionsphp">trunk/tests/phpunit/includes/functions.php</a></li>
<li><a href="#trunktestsphpunittestsblockbindingsregisterphp">trunk/tests/phpunit/tests/block-bindings/register.php</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesblockbindingspostdataphp">trunk/src/wp-includes/block-bindings/post-data.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesblockbindingspostdataphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: trunk/src/wp-includes/block-bindings/post-data.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/block-bindings/post-data.php (rev 0)
+++ trunk/src/wp-includes/block-bindings/post-data.php 2025-08-05 13:52:44 UTC (rev 60539)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,68 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+/**
+ * Post Data source for Block Bindings.
+ *
+ * @since 6.9.0
+ * @package WordPress
+ * @subpackage Block Bindings
+ */
+
+/**
+ * Gets value for Post Data source.
+ *
+ * @since 6.9.0
+ * @access private
+ *
+ * @param array $source_args Array containing arguments used to look up the source 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_data_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 data.
+ $post = get_post( $post_id );
+ if ( ( ! is_post_publicly_viewable( $post ) && ! current_user_can( 'read_post', $post_id ) ) || post_password_required( $post ) ) {
+ return null;
+ }
+
+ if ( 'date' === $source_args['key'] ) {
+ return esc_attr( get_the_date( 'c', $post_id ) );
+ }
+
+ if ( 'modified' === $source_args['key'] ) {
+ // Only return the modified date if it is later than the publishing date.
+ if ( get_the_modified_date( 'U', $post_id ) > get_the_date( 'U', $post_id ) ) {
+ return esc_attr( get_the_modified_date( 'c', $post_id ) );
+ } else {
+ return '';
+ }
+ }
+}
+
+/**
+ * Registers Post Data source in the block bindings registry.
+ *
+ * @since 6.9.0
+ * @access private
+ */
+function _register_block_bindings_post_data_source() {
+ register_block_bindings_source(
+ 'core/post-data',
+ array(
+ 'label' => _x( 'Post Data', 'block bindings source' ),
+ 'get_value_callback' => '_block_bindings_post_data_get_value',
+ 'uses_context' => array( 'postId' ),
+ )
+ );
+}
+
+add_action( 'init', '_register_block_bindings_post_data_source' );
</ins></span></pre></div>
<a id="trunksrcwpincludesclasswpblockphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/class-wp-block.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-block.php 2025-08-05 09:06:15 UTC (rev 60538)
+++ trunk/src/wp-includes/class-wp-block.php 2025-08-05 13:52:44 UTC (rev 60539)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -285,6 +285,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'core/heading' => array( 'content' ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'core/image' => array( 'id', 'url', 'title', 'alt' ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'core/button' => array( 'url', 'text', 'linkTarget', 'rel' ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'core/post-date' => array( 'datetime' ),
</ins><span class="cx" style="display: block; padding: 0 10px"> );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // If the block doesn't have the bindings property, isn't one of the supported
</span></span></pre></div>
<a id="trunksrcwpsettingsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-settings.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-settings.php 2025-08-05 09:06:15 UTC (rev 60538)
+++ trunk/src/wp-settings.php 2025-08-05 13:52:44 UTC (rev 60539)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -364,6 +364,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/class-wp-navigation-fallback.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/block-bindings.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/block-bindings/pattern-overrides.php';
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+require ABSPATH . WPINC . '/block-bindings/post-data.php';
</ins><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/block-bindings/post-meta.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/blocks.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/blocks/index.php';
</span></span></pre></div>
<a id="trunktestsphpunitincludesfunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/includes/functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/includes/functions.php 2025-08-05 09:06:15 UTC (rev 60538)
+++ trunk/tests/phpunit/includes/functions.php 2025-08-05 13:52:44 UTC (rev 60539)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -348,6 +348,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Block binding sources.
</span><span class="cx" style="display: block; padding: 0 10px"> remove_action( 'init', '_register_block_bindings_pattern_overrides_source' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ remove_action( 'init', '_register_block_bindings_post_data_source' );
</ins><span class="cx" style="display: block; padding: 0 10px"> remove_action( 'init', '_register_block_bindings_post_meta_source' );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> tests_add_filter( 'init', '_unhook_block_registration', 1000 );
</span></span></pre></div>
<a id="trunktestsphpunittestsblockbindingsregisterphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/block-bindings/register.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/block-bindings/register.php 2025-08-05 09:06:15 UTC (rev 60538)
+++ trunk/tests/phpunit/tests/block-bindings/register.php 2025-08-05 13:52:44 UTC (rev 60539)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -72,6 +72,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $source_one_name => new WP_Block_Bindings_Source( $source_one_name, $source_one_properties ),
</span><span class="cx" style="display: block; padding: 0 10px"> $source_two_name => new WP_Block_Bindings_Source( $source_two_name, $source_two_properties ),
</span><span class="cx" style="display: block; padding: 0 10px"> $source_three_name => new WP_Block_Bindings_Source( $source_three_name, $source_three_properties ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'core/post-data' => get_block_bindings_source( 'core/post-data' ),
</ins><span class="cx" style="display: block; padding: 0 10px"> 'core/post-meta' => get_block_bindings_source( 'core/post-meta' ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'core/pattern-overrides' => get_block_bindings_source( 'core/pattern-overrides' ),
</span><span class="cx" style="display: block; padding: 0 10px"> );
</span></span></pre>
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