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<title>[57026] trunk: Blocks: Parse the arguments earlier in `register_block_type_from_metadata()`.</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/57026">57026</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/57026","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>2023-10-28 01:00:14 +0000 (Sat, 28 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'>Blocks: Parse the arguments earlier in `register_block_type_from_metadata()`.

This makes it possible to register a block by passing an array of arguments, without the presence of a `block.json` file.

Follow-up to <a href="https://core.trac.wordpress.org/changeset/48141">[48141]</a>, <a href="https://core.trac.wordpress.org/changeset/49948">[49948]</a>.

Props aristath, spacedmonkey, mukesh27, costdev, audrasjb, oglekler, felipeelia, hellofromTonya.
Fixes <a href="https://core.trac.wordpress.org/ticket/56865">#56865</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesblocksphp">trunk/src/wp-includes/blocks.php</a></li>
<li><a href="#trunktestsphpunittestsblocksregisterphp">trunk/tests/phpunit/tests/blocks/register.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesblocksphp"></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/blocks.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/blocks.php  2023-10-27 20:56:59 UTC (rev 57025)
+++ trunk/src/wp-includes/blocks.php    2023-10-28 01:00:14 UTC (rev 57026)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -352,13 +352,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $file_or_folder;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        $is_core_block = str_starts_with( $file_or_folder, ABSPATH . WPINC );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-
-       if ( ! $is_core_block && ! file_exists( $metadata_file ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ // If the block is not a core block, the metadata file must exist.
+       $metadata_file_exists = $is_core_block || file_exists( $metadata_file );
+       if ( ! $metadata_file_exists && empty( $args['name'] ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                 return false;
</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">        // Try to get metadata from the static cache for core blocks.
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $metadata = false;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $metadata = array();
</ins><span class="cx" style="display: block; padding: 0 10px">         if ( $is_core_block ) {
</span><span class="cx" style="display: block; padding: 0 10px">                $core_block_name = str_replace( ABSPATH . WPINC . '/blocks/', '', $file_or_folder );
</span><span class="cx" style="display: block; padding: 0 10px">                if ( ! empty( $core_blocks_meta[ $core_block_name ] ) ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -367,15 +368,16 @@
</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">        // If metadata is not found in the static cache, read it from the file.
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        if ( ! $metadata ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( $metadata_file_exists && empty( $metadata ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                 $metadata = wp_json_file_decode( $metadata_file, array( 'associative' => true ) );
</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">-        if ( ! is_array( $metadata ) || empty( $metadata['name'] ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( ! is_array( $metadata ) || ( empty( $metadata['name'] ) && empty( $args['name'] ) ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                 return false;
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $metadata['file'] = wp_normalize_path( realpath( $metadata_file ) );
</del><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        $metadata['file'] = $metadata_file_exists ? wp_normalize_path( realpath( $metadata_file ) ) : null;
+
</ins><span class="cx" style="display: block; padding: 0 10px">         /**
</span><span class="cx" style="display: block; padding: 0 10px">         * Filters the metadata provided for registering a block type.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -404,6 +406,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        $settings          = array();
</span><span class="cx" style="display: block; padding: 0 10px">        $property_mappings = array(
</span><span class="cx" style="display: block; padding: 0 10px">                'apiVersion'      => 'api_version',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                'name'            => 'name',
</ins><span class="cx" style="display: block; padding: 0 10px">                 'title'           => 'title',
</span><span class="cx" style="display: block; padding: 0 10px">                'category'        => 'category',
</span><span class="cx" style="display: block; padding: 0 10px">                'parent'          => 'parent',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -426,12 +429,41 @@
</span><span class="cx" style="display: block; padding: 0 10px">        foreach ( $property_mappings as $key => $mapped_key ) {
</span><span class="cx" style="display: block; padding: 0 10px">                if ( isset( $metadata[ $key ] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $settings[ $mapped_key ] = $metadata[ $key ];
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        if ( $textdomain && isset( $i18n_schema->$key ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 if ( $metadata_file_exists && $textdomain && isset( $i18n_schema->$key ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                                 $settings[ $mapped_key ] = translate_settings_using_i18n_schema( $i18n_schema->$key, $settings[ $key ], $textdomain );
</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><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        if ( ! empty( $metadata['render'] ) ) {
+               $template_path = wp_normalize_path(
+                       realpath(
+                               dirname( $metadata['file'] ) . '/' .
+                               remove_block_asset_path_prefix( $metadata['render'] )
+                       )
+               );
+               if ( $template_path ) {
+                       /**
+                        * Renders the block on the server.
+                        *
+                        * @since 6.1.0
+                        *
+                        * @param array    $attributes Block attributes.
+                        * @param string   $content    Block default content.
+                        * @param WP_Block $block      Block instance.
+                        *
+                        * @return string Returns the block content.
+                        */
+                       $settings['render_callback'] = static function ( $attributes, $content, $block ) use ( $template_path ) {
+                               ob_start();
+                               require $template_path;
+                               return ob_get_clean();
+                       };
+               }
+       }
+
+       $settings = array_merge( $settings, $args );
+
</ins><span class="cx" style="display: block; padding: 0 10px">         $script_fields = array(
</span><span class="cx" style="display: block; padding: 0 10px">                'editorScript' => 'editor_script_handles',
</span><span class="cx" style="display: block; padding: 0 10px">                'script'       => 'script_handles',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -438,6 +470,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">                'viewScript'   => 'view_script_handles',
</span><span class="cx" style="display: block; padding: 0 10px">        );
</span><span class="cx" style="display: block; padding: 0 10px">        foreach ( $script_fields as $metadata_field_name => $settings_field_name ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                if ( ! empty( $settings[ $metadata_field_name ] ) ) {
+                       $metadata[ $metadata_field_name ] = $settings[ $metadata_field_name ];
+               }
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( ! empty( $metadata[ $metadata_field_name ] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $scripts           = $metadata[ $metadata_field_name ];
</span><span class="cx" style="display: block; padding: 0 10px">                        $processed_scripts = array();
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -470,6 +505,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">                'style'       => 'style_handles',
</span><span class="cx" style="display: block; padding: 0 10px">        );
</span><span class="cx" style="display: block; padding: 0 10px">        foreach ( $style_fields as $metadata_field_name => $settings_field_name ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                if ( ! empty( $settings[ $metadata_field_name ] ) ) {
+                       $metadata[ $metadata_field_name ] = $settings[ $metadata_field_name ];
+               }
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( ! empty( $metadata[ $metadata_field_name ] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $styles           = $metadata[ $metadata_field_name ];
</span><span class="cx" style="display: block; padding: 0 10px">                        $processed_styles = array();
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -530,33 +568,6 @@
</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><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        if ( ! empty( $metadata['render'] ) ) {
-               $template_path = wp_normalize_path(
-                       realpath(
-                               dirname( $metadata['file'] ) . '/' .
-                               remove_block_asset_path_prefix( $metadata['render'] )
-                       )
-               );
-               if ( $template_path ) {
-                       /**
-                        * Renders the block on the server.
-                        *
-                        * @since 6.1.0
-                        *
-                        * @param array    $attributes Block attributes.
-                        * @param string   $content    Block default content.
-                        * @param WP_Block $block      Block instance.
-                        *
-                        * @return string Returns the block content.
-                        */
-                       $settings['render_callback'] = static function ( $attributes, $content, $block ) use ( $template_path ) {
-                               ob_start();
-                               require $template_path;
-                               return ob_get_clean();
-                       };
-               }
-       }
-
</del><span class="cx" style="display: block; padding: 0 10px">         /**
</span><span class="cx" style="display: block; padding: 0 10px">         * Filters the settings determined from the block type metadata.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -565,15 +576,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * @param array $settings Array of determined settings for registering a block type.
</span><span class="cx" style="display: block; padding: 0 10px">         * @param array $metadata Metadata provided for registering a block type.
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $settings = apply_filters(
-               'block_type_metadata_settings',
-               array_merge(
-                       $settings,
-                       $args
-               ),
-               $metadata
-       );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $settings = apply_filters( 'block_type_metadata_settings', $settings, $metadata );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        $metadata['name'] = ! empty( $settings['name'] ) ? $settings['name'] : $metadata['name'];
+
</ins><span class="cx" style="display: block; padding: 0 10px">         return WP_Block_Type_Registry::get_instance()->register(
</span><span class="cx" style="display: block; padding: 0 10px">                $metadata['name'],
</span><span class="cx" style="display: block; padding: 0 10px">                $settings
</span></span></pre></div>
<a id="trunktestsphpunittestsblocksregisterphp"></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/blocks/register.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/blocks/register.php     2023-10-27 20:56:59 UTC (rev 57025)
+++ trunk/tests/phpunit/tests/blocks/register.php       2023-10-28 01:00:14 UTC (rev 57026)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -600,6 +600,126 @@
</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 registering a block using arguments instead of a block.json file.
+        *
+        * @ticket 56865
+        *
+        * @covers ::register_block_type_from_metadata
+        */
+       public function test_register_block_type_from_metadata_with_arguments() {
+               $result = register_block_type_from_metadata(
+                       '',
+                       array(
+                               'api_version' => 2,
+                               'name'        => 'tests/notice-from-array',
+                               'title'       => 'Notice from array',
+                               'category'    => 'common',
+                               'icon'        => 'star',
+                               'description' => 'Shows warning, error or success notices… (registered from an array)',
+                               'keywords'    => array(
+                                       'alert',
+                                       'message',
+                               ),
+                               'textdomain'  => 'notice-from-array',
+                       )
+               );
+
+               $this->assertInstanceOf( 'WP_Block_Type', $result, 'The block was not registered' );
+               $this->assertSame( 2, $result->api_version, 'The API version is incorrect' );
+               $this->assertSame( 'tests/notice-from-array', $result->name, 'The block name is incorrect' );
+               $this->assertSame( 'Notice from array', $result->title, 'The block title is incorrect' );
+               $this->assertSame( 'common', $result->category, 'The block category is incorrect' );
+               $this->assertSame( 'star', $result->icon, 'The block icon is incorrect' );
+               $this->assertSame(
+                       'Shows warning, error or success notices… (registered from an array)',
+                       $result->description,
+                       'The block description is incorrect'
+               );
+               $this->assertSameSets( array( 'alert', 'message' ), $result->keywords, 'The block keywords are incorrect' );
+       }
+
+       /**
+        * Tests that defined $args can properly override the block.json file.
+        *
+        * @ticket 56865
+        *
+        * @covers ::register_block_type_from_metadata
+        */
+       public function test_block_registers_with_args_override() {
+               $result = register_block_type_from_metadata(
+                       DIR_TESTDATA . '/blocks/notice',
+                       array(
+                               'name'  => 'tests/notice-with-overrides',
+                               'title' => 'Overriden title',
+                               'style' => array( 'tests-notice-style-overridden' ),
+                       )
+               );
+
+               $this->assertInstanceOf( 'WP_Block_Type', $result, 'The block was not registered' );
+               $this->assertSame( 2, $result->api_version, 'The API version is incorrect' );
+               $this->assertSame( 'tests/notice-with-overrides', $result->name, 'The block name was not overridden' );
+               $this->assertSame( 'Overriden title', $result->title, 'The block title was not overridden' );
+               $this->assertSameSets(
+                       array( 'tests-notice-editor-script' ),
+                       $result->editor_script_handles,
+                       'The block editor script is incorrect'
+               );
+               $this->assertSameSets(
+                       array( 'tests-notice-style-overridden' ),
+                       $result->style_handles,
+                       'The block style was not overridden'
+               );
+               $this->assertIsCallable( $result->render_callback );
+       }
+
+       /**
+        * Tests that when the `name` is missing, `register_block_type_from_metadata()`
+        * will return `false`.
+        *
+        * @ticket 56865
+        *
+        * @covers ::register_block_type_from_metadata
+        *
+        * @dataProvider data_register_block_registers_with_args_override_returns_false_when_name_is_missing
+        *
+        * @param string $file The metadata file.
+        * @param array  $args Array of block type arguments.
+        */
+       public function test_block_registers_with_args_override_returns_false_when_name_is_missing( $file, $args ) {
+               $this->assertFalse( register_block_type_from_metadata( $file, $args ) );
+       }
+
+       /**
+        * Data provider.
+        *
+        * @return array[]
+        */
+       public function data_register_block_registers_with_args_override_returns_false_when_name_is_missing() {
+               return array(
+                       'no block.json file and no name argument' => array(
+                               'file' => '', // No block.json file.
+                               'args' => array(
+                                       'title' => 'Overriden title',
+                                       'style' => array( 'tests-notice-style-overridden' ),
+                               ),
+                       ),
+                       'existing file and args not an array'     => array(
+                               // A file that exists but is empty. This will bypass the file_exists() check.
+                               'file' => DIR_TESTDATA . '/blocks/notice/block.js',
+                               'args' => false,
+                       ),
+                       'existing file and args[name] missing'    => array(
+                               // A file that exists but is empty. This will bypass the file_exists() check.
+                               'file' => DIR_TESTDATA . '/blocks/notice/block.js',
+                               'args' => array(
+                                       'title' => 'Overriden title',
+                                       'style' => array( 'tests-notice-style-overridden' ),
+                               ),
+                       ),
+               );
+       }
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * Tests that the function returns the registered block when the `block.json`
</span><span class="cx" style="display: block; padding: 0 10px">         * is found in the fixtures directory.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span></span></pre>
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