Create Block: Refactor handling for template variants

packages/create-block-tutorial-template/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Enhancement
+
+-   Add support to the `dynamic` variant ([#41289](https://github.com/WordPress/gutenberg/pull/41289), [#43481](https://github.com/WordPress/gutenberg/pull/43481)).
+
 ## 2.3.0 (2022-06-01)
 
 ### Enhancement

packages/create-block-tutorial-template/block-templates/index.js.mustache

@@ -44,6 +44,7 @@ registerBlockType( metadata.name, {
 	 */
 	edit: Edit,
 	{{#isStaticVariant}}
+
 	/**
 	 * @see ./save.js
 	 */

packages/create-block-tutorial-template/block-templates/template.php.mustache

@@ -1,5 +1,5 @@
 {{#isDynamicVariant}}
 <p <?php echo get_block_wrapper_attributes(); ?>>
-	<?php echo esc_html( $atts['message']) ?>
+	<?php echo esc_html( $attributes['message'] ); ?>
 </p>
 {{/isDynamicVariant}}

packages/create-block-tutorial-template/plugin-templates/$slug.php.mustache

@@ -37,33 +37,32 @@
  *
  * @see https://developer.wordpress.org/reference/functions/register_block_type/
  */
-{{#isStaticVariant}}
 function {{namespaceSnakeCase}}_{{slugSnakeCase}}_block_init() {
+	{{#isStaticVariant}}
 	register_block_type( __DIR__ . '/build' );
-}
-add_action( 'init', '{{namespaceSnakeCase}}_{{slugSnakeCase}}_block_init' );
-{{/isStaticVariant}}
-{{#isDynamicVariant}}
-function {{namespaceSnakeCase}}_{{slugSnakeCase}}_block_init() {
+	{{/isStaticVariant}}
+	{{#isDynamicVariant}}
 	register_block_type(
 		__DIR__ . '/build',
 		array(
 			'render_callback' => '{{namespaceSnakeCase}}_{{slugSnakeCase}}_render_callback',
 		)
 	);
+	{{/isDynamicVariant}}
 }
 add_action( 'init', '{{namespaceSnakeCase}}_{{slugSnakeCase}}_block_init' );
+{{#isDynamicVariant}}
 
 /**
- * Render callback function
+ * Render callback function.
  *
  * @param array    $attributes The block attributes.
  * @param string   $content    The block content.
  * @param WP_Block $block      Block instance.
  *
  * @return string The rendered output.
  */
-function {{namespaceSnakeCase}}_{{slugSnakeCase}}_render_callback( $atts, $content, $block) {
+function {{namespaceSnakeCase}}_{{slugSnakeCase}}_render_callback( $atts, $content, $block ) {
 	ob_start();
 	require plugin_dir_path( __FILE__ ) . 'build/template.php';
 	return ob_get_clean();

packages/create-block/CHANGELOG.md

@@ -9,7 +9,7 @@
 ### New Feature
 
 -   Add `--no-plugin` flag to allow scaffolding of a block in an existing plugin ([#41642](https://github.com/WordPress/gutenberg/pull/41642))
--   Introduce the `--variant` flag to allow selection of a variant as defined in the template ([#41289](https://github.com/WordPress/gutenberg/pull/41289)).
+-   Introduce the `--variant` flag to allow selection of a variant as defined in the template ([#41289](https://github.com/WordPress/gutenberg/pull/41289), [#43481](https://github.com/WordPress/gutenberg/pull/43481)).
 
 ## 3.6.0 (2022-07-13)
 

packages/create-block/lib/index.js

@@ -77,10 +77,22 @@ program
 			await checkSystemRequirements( engines );
 			try {
 				const pluginTemplate = await getPluginTemplate( templateName );
-				const defaultValues = getDefaultValues(
-					pluginTemplate,
-					variant
+				const availableVariants = Object.keys(
+					pluginTemplate.variants
 				);
+				if ( variant && ! availableVariants.includes( variant ) ) {
+					if ( ! availableVariants.length ) {
+						throw new CLIError(
+							`"${ variant }" variant was selected. This template does not have any variants!`
+						);
+					}
+					throw new CLIError(
+						`"${ variant }" is not a valid variant for this template. Available variants are: ${ availableVariants.join(
+							', '
+						) }.`
+					);
+				}
+
 				const optionsValues = Object.fromEntries(
 					Object.entries( {
 						plugin,
@@ -90,11 +102,14 @@ program
 						title,
 						wpScripts,
 						wpEnv,
-						variant,
 					} ).filter( ( [ , value ] ) => value !== undefined )
 				);
 
 				if ( slug ) {
+					const defaultValues = getDefaultValues(
+						pluginTemplate,
+						variant
+					);
 					const answers = {
 						...defaultValues,
 						slug,
@@ -111,19 +126,24 @@ program
 							: "Let's add a new block to your existing WordPress plugin:"
 					);
 
-					const filterOptionsProvided = ( { name } ) =>
-						! Object.keys( optionsValues ).includes( name );
+					if ( ! variant && availableVariants.length > 1 ) {
+						const result = await inquirer.prompt( {
+							type: 'list',
+							name: 'variant',
+							message:
+								'The template variant to use for this block:',
+							choices: availableVariants,
+						} );
+						variant = result.variant;
+					}
 
-					// Get the variant prompt first. This will help get the default values
-					const variantPrompt =
-						Object.keys( pluginTemplate.variants )?.length > 1
-							? getPrompts( pluginTemplate, [ 'variant' ] )
-							: false;
-
-					const variantSelection = variantPrompt
-						? await inquirer.prompt( variantPrompt )
-						: false;
+					const defaultValues = getDefaultValues(
+						pluginTemplate,
+						variant
+					);
 
+					const filterOptionsProvided = ( { name } ) =>
+						! Object.keys( optionsValues ).includes( name );
 					const blockPrompts = getPrompts(
 						pluginTemplate,
 						[
@@ -134,9 +154,8 @@ program
 							'dashicon',
 							'category',
 						],
-						variantSelection.variant
+						variant
 					).filter( filterOptionsProvided );
-
 					const blockAnswers = await inquirer.prompt( blockPrompts );
 
 					const pluginAnswers = plugin
@@ -163,7 +182,8 @@ program
 											'licenseURI',
 											'domainPath',
 											'updateURI',
-										]
+										],
+										variant
 									).filter( filterOptionsProvided );
 									const result = await inquirer.prompt(
 										pluginPrompts
@@ -175,8 +195,8 @@ program
 					await scaffold( pluginTemplate, {
 						...defaultValues,
 						...optionsValues,
+						variant,
 						...blockAnswers,
-						...variantSelection,
 						...pluginAnswers,
 					} );
 				}

packages/create-block/lib/prompts.js

@@ -134,16 +134,8 @@ const updateURI = {
 	message: 'A custom update URI for the plugin (optional):',
 };
 
-const variant = {
-	type: 'list',
-	name: 'variant',
-	message: 'The template variant to use for this block:',
-	choices: [],
-};
-
 module.exports = {
 	slug,
-	variant,
 	namespace,
 	title,
 	description,

packages/create-block/lib/scaffold.js

@@ -12,10 +12,9 @@ const initWPScripts = require( './init-wp-scripts' );
 const initWPEnv = require( './init-wp-env' );
 const { code, info, success, error } = require( './log' );
 const { writeOutputAsset, writeOutputTemplate } = require( './output' );
-const { getTemplateVariantVars } = require( './templates' );
 
 module.exports = async (
-	{ blockOutputTemplates, pluginOutputTemplates, outputAssets, variants },
+	{ blockOutputTemplates, pluginOutputTemplates, outputAssets },
 	{
 		$schema,
 		apiVersion,
@@ -44,7 +43,7 @@ module.exports = async (
 		editorScript,
 		editorStyle,
 		style,
-		variant,
+		variantVars,
 	}
 ) => {
 	slug = slug.toLowerCase();
@@ -100,8 +99,7 @@ module.exports = async (
 		editorScript,
 		editorStyle,
 		style,
-		...getTemplateVariantVars( variants, variant ),
-		...variants[ variant ],
+		...variantVars,
 	};
 
 	if ( plugin ) {

packages/create-block/lib/templates.js

@@ -111,9 +111,9 @@ const externalTemplateExists = async ( templateName ) => {
 const configToTemplate = async ( {
 	pluginTemplatesPath,
 	blockTemplatesPath,
-	defaultValues = {},
 	assetsPath,
-	variants,
+	defaultValues = {},
+	variants = {},
 	...deprecated
 } ) => {
 	if ( defaultValues === null || typeof defaultValues !== 'object' ) {
@@ -140,9 +140,9 @@ const configToTemplate = async ( {
 		blockOutputTemplates: blockTemplatesPath
 			? await getOutputTemplates( blockTemplatesPath )
 			: {},
-		defaultValues,
-		outputAssets: assetsPath ? await getOutputAssets( assetsPath ) : {},
 		pluginOutputTemplates: await getOutputTemplates( pluginTemplatesPath ),
+		outputAssets: assetsPath ? await getOutputAssets( assetsPath ) : {},
+		defaultValues,
 		variants,
 	};
 };
@@ -231,60 +231,41 @@ const getDefaultValues = ( pluginTemplate, variant ) => {
 		editorStyle: 'file:./index.css',
 		style: 'file:./style-index.css',
 		...pluginTemplate.defaultValues,
-		...pluginTemplate.variants[ variant ],
+		...pluginTemplate.variants?.[ variant ],
+		variantVars: getVariantVars( pluginTemplate.variants, variant ),
 	};
 };
 
 const getPrompts = ( pluginTemplate, keys, variant ) => {
-	const defaultValues = getDefaultValues( pluginTemplate );
-	const variantData = pluginTemplate.variants[ variant ] ?? false;
+	const defaultValues = getDefaultValues( pluginTemplate, variant );
 	return keys.map( ( promptName ) => {
-		if ( promptName === 'variant' ) {
-			prompts[ promptName ].choices = Object.keys(
-				pluginTemplate.variants
-			);
-		}
-		if ( variantData && variantData[ promptName ] ) {
-			return {
-				...prompts[ promptName ],
-				default: variantData[ promptName ],
-			};
-		}
 		return {
 			...prompts[ promptName ],
 			default: defaultValues[ promptName ],
 		};
 	} );
 };
 
-const getTemplateVariantVars = ( variants, variant ) => {
+const getVariantVars = ( variants, variant ) => {
 	const variantVars = {};
-	if ( variants ) {
-		const variantNames = Object.keys( variants );
-		const chosenVariant = variant ?? variantNames[ 0 ]; // If no variant is passed, use the first in the array as the default
+	const variantNames = Object.keys( variants );
+	if ( variantNames.length === 0 ) {
+		return variantVars;
+	}
 
-		if ( variantNames.includes( chosenVariant ) ) {
-			for ( const variantName of variantNames ) {
-				const key =
-					variantName.charAt( 0 ).toUpperCase() +
-					variantName.slice( 1 );
-				variantVars[ `is${ key }Variant` ] =
-					chosenVariant === variantName ?? false;
-			}
-		} else {
-			throw new CLIError(
-				`"${ chosenVariant }" is not a valid variant for this template. Available variants are: ${ variantNames.join(
-					', '
-				) }`
-			);
-		}
+	const currentVariant = variant ?? variantNames[ 0 ];
+	for ( const variantName of variantNames ) {
+		const key =
+			variantName.charAt( 0 ).toUpperCase() + variantName.slice( 1 );
+		variantVars[ `is${ key }Variant` ] =
+			currentVariant === variantName ?? false;
 	}
+
 	return variantVars;
 };
 
 module.exports = {
 	getPluginTemplate,
 	getDefaultValues,
 	getPrompts,
-	getTemplateVariantVars,
 };

packages/create-block/lib/templates/block/index.js.mustache

@@ -34,6 +34,7 @@ registerBlockType( metadata.name, {
 	 */
 	edit: Edit,
 	{{#isStaticVariant}}
+
 	/**
 	 * @see ./save.js
 	 */

packages/create-block/lib/templates/es5/$slug.php.mustache

@@ -68,40 +68,32 @@ function {{namespaceSnakeCase}}_{{slugSnakeCase}}_block_init() {
 		array(),
 		filemtime( "$dir/$style_css" )
 	);
-	{{^isDynamicVariant}}
+
 	register_block_type(
 		'{{namespace}}/{{slug}}',
 		array(
 			'editor_script' => '{{namespace}}-{{slug}}-block-editor',
 			'editor_style'  => '{{namespace}}-{{slug}}-block-editor',
 			'style'         => '{{namespace}}-{{slug}}-block',
-		)
-	);
-	{{/isDynamicVariant}}
-	{{#isDynamicVariant}}
-	register_block_type(
-		'{{namespace}}/{{slug}}',
-		array(
-			'editor_script'   => '{{namespace}}-{{slug}}-block-editor',
-			'editor_style'    => '{{namespace}}-{{slug}}-block-editor',
-			'style'           => '{{namespace}}-{{slug}}-block',
+			{{#isDynamicVariant}}
 			'render_callback' => '{{namespaceSnakeCase}}_{{slugSnakeCase}}_render_callback',
+			{{/isDynamicVariant}}
 		)
 	);
-	{{/isDynamicVariant}}
 }
 add_action( 'init', '{{namespaceSnakeCase}}_{{slugSnakeCase}}_block_init' );
 {{#isDynamicVariant}}
+
 /**
- * Render callback function
+ * Render callback function.
  *
  * @param array    $attributes The block attributes.
  * @param string   $content    The block content.
  * @param WP_Block $block      Block instance.
  *
  * @return string The rendered output.
  */
-function {{namespaceSnakeCase}}_{{slugSnakeCase}}_render_callback( $atts, $content, $block) {
+function {{namespaceSnakeCase}}_{{slugSnakeCase}}_render_callback( $attributes, $content, $block ) {
 	ob_start();
 	require plugin_dir_path( __FILE__ ) . '/template.php';
 	return ob_get_clean();

packages/create-block/lib/templates/es5/index.js.mustache

@@ -94,7 +94,9 @@
 				useBlockProps(),
 				__( '{{title}} – hello from the editor!', '{{textdomain}}' )
 			);
-		}{{#isStaticVariant}},
+		},
+		{{#isStaticVariant}}
+
 		/**
 		 * The save function defines the way in which the different attributes should be combined
 		 * into the final markup, which is then serialized by the block editor into `post_content`.