register_block_type_from_metadata( string $file_or_folder, array $args = array() )

Source

File: wp-includes/blocks.php

function register_block_type_from_metadata( $file_or_folder, $args = array() ) {
	$filename      = 'block.json';
	$metadata_file = ( substr( $file_or_folder, -strlen( $filename ) ) !== $filename ) ?
		trailingslashit( $file_or_folder ) . $filename :
		$file_or_folder;
	if ( ! file_exists( $metadata_file ) ) {
		return false;
	}

	$metadata = json_decode( file_get_contents( $metadata_file ), true );
	if ( ! is_array( $metadata ) || empty( $metadata['name'] ) ) {
		return false;
	}
	$metadata['file'] = $metadata_file;

	/**
	 * Filters the metadata provided for registering a block type.
	 *
	 * @since 5.7.0
	 *
	 * @param array $metadata Metadata for registering a block type.
	 */
	$metadata = apply_filters( 'block_type_metadata', $metadata );

	// Add `style` and `editor_style` for core blocks if missing.
	if ( ! empty( $metadata['name'] ) && 0 === strpos( $metadata['name'], 'core/' ) ) {
		$block_name = str_replace( 'core/', '', $metadata['name'] );

		if ( ! isset( $metadata['style'] ) ) {
			$metadata['style'] = "wp-block-$block_name";
		}
		if ( ! isset( $metadata['editorStyle'] ) ) {
			$metadata['editorStyle'] = "wp-block-{$block_name}-editor";
		}
	}

	$settings          = array();
	$property_mappings = array(
		'title'           => 'title',
		'category'        => 'category',
		'parent'          => 'parent',
		'icon'            => 'icon',
		'description'     => 'description',
		'keywords'        => 'keywords',
		'attributes'      => 'attributes',
		'providesContext' => 'provides_context',
		'usesContext'     => 'uses_context',
		'supports'        => 'supports',
		'styles'          => 'styles',
		'example'         => 'example',
		'apiVersion'      => 'api_version',
	);

	foreach ( $property_mappings as $key => $mapped_key ) {
		if ( isset( $metadata[ $key ] ) ) {
			$value = $metadata[ $key ];
			if ( empty( $metadata['textdomain'] ) ) {
				$settings[ $mapped_key ] = $value;
				continue;
			}
			$textdomain = $metadata['textdomain'];
			switch ( $key ) {
				case 'title':
				case 'description':
					// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralContext,WordPress.WP.I18n.NonSingularStringLiteralDomain
					$settings[ $mapped_key ] = translate_with_gettext_context( $value, sprintf( 'block %s', $key ), $textdomain );
					break;
				case 'keywords':
					$settings[ $mapped_key ] = array();
					if ( ! is_array( $value ) ) {
						continue 2;
					}

					foreach ( $value as $keyword ) {
						// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralDomain
						$settings[ $mapped_key ][] = translate_with_gettext_context( $keyword, 'block keyword', $textdomain );
					}

					break;
				case 'styles':
					$settings[ $mapped_key ] = array();
					if ( ! is_array( $value ) ) {
						continue 2;
					}

					foreach ( $value as $style ) {
						if ( ! empty( $style['label'] ) ) {
							// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralDomain
							$style['label'] = translate_with_gettext_context( $style['label'], 'block style label', $textdomain );
						}
						$settings[ $mapped_key ][] = $style;
					}

					break;
				default:
					$settings[ $mapped_key ] = $value;
			}
		}
	}

	if ( ! empty( $metadata['editorScript'] ) ) {
		$settings['editor_script'] = register_block_script_handle(
			$metadata,
			'editorScript'
		);
	}

	if ( ! empty( $metadata['script'] ) ) {
		$settings['script'] = register_block_script_handle(
			$metadata,
			'script'
		);
	}

	if ( ! empty( $metadata['editorStyle'] ) ) {
		$settings['editor_style'] = register_block_style_handle(
			$metadata,
			'editorStyle'
		);
	}

	if ( ! empty( $metadata['style'] ) ) {
		$settings['style'] = register_block_style_handle(
			$metadata,
			'style'
		);
	}

	/**
	 * Filters the settings determined from the block type metadata.
	 *
	 * @since 5.7.0
	 *
	 * @param array $settings Array of determined settings for registering a block type.
	 * @param array $metadata Metadata provided for registering a block type.
	 */
	$settings = apply_filters(
		'block_type_metadata_settings',
		array_merge(
			$settings,
			$args
		),
		$metadata
	);

	return WP_Block_Type_Registry::get_instance()->register(
		$metadata['name'],
		$settings
	);
}