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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/58825">58825</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/58825","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>luisherranz</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2024-07-29 11:08:18 +0000 (Mon, 29 Jul 2024)</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'>Interactivity API: Allow server derived state to appear in non-final position

In some cases, derived state returns an associative array. Directives may wish to continue to access properties of the associative array, when using the syntax `state.arrayReturnedByClosure.property`. This patch continues evaluating the path after the associative array has been returned by the Closure.

Props jonsurrell, luisherranz.

Fixes <a href="https://core.trac.wordpress.org/ticket/61741">#61741</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesinteractivityapiclasswpinteractivityapiphp">trunk/src/wp-includes/interactivity-api/class-wp-interactivity-api.php</a></li>
<li><a href="#trunktestsphpunittestsinteractivityapiwpInteractivityAPIphp">trunk/tests/phpunit/tests/interactivity-api/wpInteractivityAPI.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesinteractivityapiclasswpinteractivityapiphp"></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/interactivity-api/class-wp-interactivity-api.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/interactivity-api/class-wp-interactivity-api.php    2024-07-29 10:08:22 UTC (rev 58824)
+++ trunk/src/wp-includes/interactivity-api/class-wp-interactivity-api.php      2024-07-29 11:08:18 UTC (rev 58825)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -494,6 +494,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 6.5.0
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 6.6.0 The function now adds a warning when the namespace is null, falsy, or the directive value is empty.
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 6.6.0 Removed `default_namespace` and `context` arguments.
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * @since 6.6.0 Add support for derived state.
</ins><span class="cx" style="display: block; padding: 0 10px">          *
</span><span class="cx" style="display: block; padding: 0 10px">         * @param string|true $directive_value The directive attribute value string or `true` when it's a boolean attribute.
</span><span class="cx" style="display: block; padding: 0 10px">         * @return mixed|null The result of the evaluation. Null if the reference path doesn't exist or the namespace is falsy.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -530,32 +531,32 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        } else {
</span><span class="cx" style="display: block; padding: 0 10px">                                return null;
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</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><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( $current instanceof Closure ) {
-                       /*
-                        * This state getter's namespace is added to the stack so that
-                        * `state()` or `get_config()` read that namespace when called
-                        * without specifying one.
-                        */
-                       array_push( $this->namespace_stack, $ns );
-                       try {
-                               $current = $current();
-                       } catch ( Throwable $e ) {
-                               _doing_it_wrong(
-                                       __METHOD__,
-                                       sprintf(
-                                               /* translators: 1: Path pointing to an Interactivity API state property, 2: Namespace for an Interactivity API store. */
-                                               __( 'Uncaught error executing a derived state callback with path "%1$s" and namespace "%2$s".' ),
-                                               $path,
-                                               $ns
-                                       ),
-                                       '6.6.0'
-                               );
-                               return null;
-                       } finally {
-                               // Remove the property's namespace from the stack.
-                               array_pop( $this->namespace_stack );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 if ( $current instanceof Closure ) {
+                               /*
+                                * This state getter's namespace is added to the stack so that
+                                * `state()` or `get_config()` read that namespace when called
+                                * without specifying one.
+                                */
+                               array_push( $this->namespace_stack, $ns );
+                               try {
+                                       $current = $current();
+                               } catch ( Throwable $e ) {
+                                       _doing_it_wrong(
+                                               __METHOD__,
+                                               sprintf(
+                                                       /* translators: 1: Path pointing to an Interactivity API state property, 2: Namespace for an Interactivity API store. */
+                                                       __( 'Uncaught error executing a derived state callback with path "%1$s" and namespace "%2$s".' ),
+                                                       $path,
+                                                       $ns
+                                               ),
+                                               '6.6.0'
+                                       );
+                                       return null;
+                               } finally {
+                                       // Remove the property's namespace from the stack.
+                                       array_pop( $this->namespace_stack );
+                               }
</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="trunktestsphpunittestsinteractivityapiwpInteractivityAPIphp"></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/interactivity-api/wpInteractivityAPI.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/interactivity-api/wpInteractivityAPI.php        2024-07-29 10:08:22 UTC (rev 58824)
+++ trunk/tests/phpunit/tests/interactivity-api/wpInteractivityAPI.php  2024-07-29 11:08:18 UTC (rev 58825)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1297,7 +1297,6 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertSame( "Derived state: otherPlugin-state\nDerived context: otherPlugin-context", $result );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</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">         * Tests the `evaluate` method for derived state functions that throw.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1323,6 +1322,29 @@
</span><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><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * Tests the `evaluate` method for derived state intermediate values.
+        *
+        * @ticket 61741
+        *
+        * @covers ::evaluate
+        */
+       public function test_evaluate_derived_state_intermediate() {
+               $this->interactivity->state(
+                       'myPlugin',
+                       array(
+                               'derivedState' => function () {
+                                       return array( 'property' => 'value' );
+                               },
+                       )
+               );
+               $this->set_internal_context_stack();
+               $this->set_internal_namespace_stack( 'myPlugin' );
+
+               $result = $this->evaluate( 'state.derivedState.property' );
+               $this->assertSame( 'value', $result );
+       }
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * Tests the `kebab_to_camel_case` method.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @covers ::kebab_to_camel_case
</span></span></pre>
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