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<title>[56793] trunk: Editor: Move `wp_navigation` schema updating to `WP_Navigation_Fallback` class.</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/56793">56793</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/56793","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2023-10-06 14:04:22 +0000 (Fri, 06 Oct 2023)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Editor: Move `wp_navigation` schema updating to `WP_Navigation_Fallback` class.

This aims to better align the navigation fallback implementation with core architecture and best practices.

The function that updates the `wp_navigation` post response schema is now a public method of the `WP_Navigation_Fallback` class, so an extra file previously used for that specific function is no longer necessary.

Follow-up to <a href="https://core.trac.wordpress.org/changeset/56052">[56052]</a>.

Props ramonopoly, scruffian, isabel_brison, mukesh27, swissspidy, rajinsharwar, afercia, audrasjb, mikeschroder, JeffPaul, johnjamesjacoby, TimothyBlynJacobs, oglekler, SergeyBiryukov.
Fixes <a href="https://core.trac.wordpress.org/ticket/58910">#58910</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadminincludesupdatecorephp">trunk/src/wp-admin/includes/update-core.php</a></li>
<li><a href="#trunksrcwpincludesclasswpnavigationfallbackphp">trunk/src/wp-includes/class-wp-navigation-fallback.php</a></li>
<li><a href="#trunksrcwpincludesdefaultfiltersphp">trunk/src/wp-includes/default-filters.php</a></li>
<li><a href="#trunksrcwpsettingsphp">trunk/src/wp-settings.php</a></li>
<li><a href="#trunktestsphpunittestsrestapirestnavigationfallbackcontrollerphp">trunk/tests/phpunit/tests/rest-api/rest-navigation-fallback-controller.php</a></li>
</ul>

<h3>Removed Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesnavigationfallbackphp">trunk/src/wp-includes/navigation-fallback.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpadminincludesupdatecorephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/includes/update-core.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/includes/update-core.php       2023-10-06 12:45:43 UTC (rev 56792)
+++ trunk/src/wp-admin/includes/update-core.php 2023-10-06 14:04:22 UTC (rev 56793)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -867,6 +867,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">        'wp-includes/images/wlw',
</span><span class="cx" style="display: block; padding: 0 10px">        'wp-includes/wlwmanifest.xml',
</span><span class="cx" style="display: block; padding: 0 10px">        'wp-includes/random_compat',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        // 6.4
+       'wp-includes/navigation-fallback.php',
</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"> /**
</span></span></pre></div>
<a id="trunksrcwpincludesclasswpnavigationfallbackphp"></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-navigation-fallback.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-navigation-fallback.php    2023-10-06 12:45:43 UTC (rev 56792)
+++ trunk/src/wp-includes/class-wp-navigation-fallback.php      2023-10-06 14:04:22 UTC (rev 56793)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -18,6 +18,50 @@
</span><span class="cx" style="display: block; padding: 0 10px"> class WP_Navigation_Fallback {
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * Updates the wp_navigation custom post type schema, in order to expose
+        * additional fields in the embeddable links of WP_REST_Navigation_Fallback_Controller.
+        *
+        * The Navigation Fallback endpoint may embed the full Navigation Menu object
+        * into the response as the `self` link. By default, the Posts Controller
+        * will only expose a limited subset of fields but the editor requires
+        * additional fields to be available in order to utilize the menu.
+        *
+        * Used with the `rest_wp_navigation_item_schema` hook.
+        *
+        * @since 6.4.0
+        *
+        * @param array $schema The schema for the `wp_navigation` post.
+        * @return array The modified schema.
+        */
+       public static function update_wp_navigation_post_schema( $schema ) {
+               // Expose top level fields.
+               $schema['properties']['status']['context']  = array_merge( $schema['properties']['status']['context'], array( 'embed' ) );
+               $schema['properties']['content']['context'] = array_merge( $schema['properties']['content']['context'], array( 'embed' ) );
+
+               /*
+                * Exposes sub properties of content field.
+                * These sub properties aren't exposed by the posts controller by default,
+                * for requests where context is `embed`.
+                *
+                * @see WP_REST_Posts_Controller::get_item_schema()
+                */
+               $schema['properties']['content']['properties']['raw']['context']           = array_merge( $schema['properties']['content']['properties']['raw']['context'], array( 'embed' ) );
+               $schema['properties']['content']['properties']['rendered']['context']      = array_merge( $schema['properties']['content']['properties']['rendered']['context'], array( 'embed' ) );
+               $schema['properties']['content']['properties']['block_version']['context'] = array_merge( $schema['properties']['content']['properties']['block_version']['context'], array( 'embed' ) );
+
+               /*
+                * Exposes sub properties of title field.
+                * These sub properties aren't exposed by the posts controller by default,
+                * for requests where context is `embed`.
+                *
+                * @see WP_REST_Posts_Controller::get_item_schema()
+                */
+               $schema['properties']['title']['properties']['raw']['context'] = array_merge( $schema['properties']['title']['properties']['raw']['context'], array( 'embed' ) );
+
+               return $schema;
+       }
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * Gets (and/or creates) an appropriate fallback Navigation Menu.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 6.3.0
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -25,7 +69,6 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * @return WP_Post|null the fallback Navigation Post or null.
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="cx" style="display: block; padding: 0 10px">        public static function get_fallback() {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-
</del><span class="cx" style="display: block; padding: 0 10px">                 /**
</span><span class="cx" style="display: block; padding: 0 10px">                 * Filters whether or not a fallback should be created.
</span><span class="cx" style="display: block; padding: 0 10px">                 *
</span></span></pre></div>
<a id="trunksrcwpincludesdefaultfiltersphp"></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/default-filters.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/default-filters.php 2023-10-06 12:45:43 UTC (rev 56792)
+++ trunk/src/wp-includes/default-filters.php   2023-10-06 14:04:22 UTC (rev 56793)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -711,6 +711,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'setup_theme', 'wp_enable_block_templates' );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'wp_loaded', '_add_template_loader_filters' );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+// wp_navigation post type.
+add_filter( 'rest_wp_navigation_item_schema', array( 'WP_Navigation_Fallback', 'update_wp_navigation_post_schema' ) );
+
</ins><span class="cx" style="display: block; padding: 0 10px"> // Fluid typography.
</span><span class="cx" style="display: block; padding: 0 10px"> add_filter( 'render_block', 'wp_render_typography_support', 10, 2 );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre></div>
<a id="trunksrcwpincludesnavigationfallbackphp"></a>
<div class="delfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Deleted: trunk/src/wp-includes/navigation-fallback.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/navigation-fallback.php     2023-10-06 12:45:43 UTC (rev 56792)
+++ trunk/src/wp-includes/navigation-fallback.php       2023-10-06 14:04:22 UTC (rev 56793)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1,56 +0,0 @@
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-<?php
-/**
- * Navigation Fallback
- *
- * Functions required for managing Navigation fallbacks behavior.
- *
- * @package WordPress
- * @since 6.3.0
- */
-
-/**
- * Expose additional fields in the embeddable links of the
- * Navigation Fallback REST endpoint.
- *
- * The endpoint may embed the full Navigation Menu object into the
- * response as the `self` link. By default, the Posts Controller
- * will only expose a limited subset of fields but the editor requires
- * additional fields to be available in order to utilize the menu.
- *
- * @since 6.3.0
- *
- * @param array $schema the schema for the `wp_navigation` post.
- * @return array the modified schema.
- */
-function wp_add_fields_to_navigation_fallback_embedded_links( $schema ) {
-       // Expose top level fields.
-       $schema['properties']['status']['context']  = array_merge( $schema['properties']['status']['context'], array( 'embed' ) );
-       $schema['properties']['content']['context'] = array_merge( $schema['properties']['content']['context'], array( 'embed' ) );
-
-       /*
-        * Exposes sub properties of content field.
-        * These sub properties aren't exposed by the posts controller by default,
-        * for requests where context is `embed`.
-        *
-        * @see WP_REST_Posts_Controller::get_item_schema()
-        */
-       $schema['properties']['content']['properties']['raw']['context']           = array_merge( $schema['properties']['content']['properties']['raw']['context'], array( 'embed' ) );
-       $schema['properties']['content']['properties']['rendered']['context']      = array_merge( $schema['properties']['content']['properties']['rendered']['context'], array( 'embed' ) );
-       $schema['properties']['content']['properties']['block_version']['context'] = array_merge( $schema['properties']['content']['properties']['block_version']['context'], array( 'embed' ) );
-
-       /*
-        * Exposes sub properties of title field.
-        * These sub properties aren't exposed by the posts controller by default,
-        * for requests where context is `embed`.
-        *
-        * @see WP_REST_Posts_Controller::get_item_schema()
-        */
-       $schema['properties']['title']['properties']['raw']['context'] = array_merge( $schema['properties']['title']['properties']['raw']['context'], array( 'embed' ) );
-
-       return $schema;
-}
-
-add_filter(
-       'rest_wp_navigation_item_schema',
-       'wp_add_fields_to_navigation_fallback_embedded_links'
-);
</del></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 2023-10-06 12:45:43 UTC (rev 56792)
+++ trunk/src/wp-settings.php   2023-10-06 14:04:22 UTC (rev 56793)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -354,7 +354,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/block-supports/spacing.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/block-supports/typography.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/block-supports/settings.php';
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-require ABSPATH . WPINC . '/navigation-fallback.php';
</del><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/style-engine.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/style-engine/class-wp-style-engine.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require ABSPATH . WPINC . '/style-engine/class-wp-style-engine-css-declarations.php';
</span></span></pre></div>
<a id="trunktestsphpunittestsrestapirestnavigationfallbackcontrollerphp"></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/rest-api/rest-navigation-fallback-controller.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/rest-api/rest-navigation-fallback-controller.php        2023-10-06 12:45:43 UTC (rev 56792)
+++ trunk/tests/phpunit/tests/rest-api/rest-navigation-fallback-controller.php  2023-10-06 14:04:22 UTC (rev 56793)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -152,7 +152,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @ticket 58557
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-         * @covers ::wp_add_fields_to_navigation_fallback_embedded_links
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+  * @covers WP_Navigation_Fallback::update_wp_navigation_post_schema
</ins><span class="cx" style="display: block; padding: 0 10px">          *
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 6.3.0 Added Navigation Fallbacks endpoint.
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span></span></pre>
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