Created
November 13, 2023 12:50
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<?php | |
/** | |
* A method to persist template changes to disk | |
* | |
* This helper writes template changes to their appropriate HTML file instead of saving | |
* them to the DB, helping make local theme development of block based themes more | |
* efficient. | |
*/ | |
declare ( strict_types = 1 ); | |
/** | |
* TemplatePersistence | |
*/ | |
class TemplatePersistence { | |
/** | |
* Init Hooks | |
* | |
* @return void | |
*/ | |
public function init(): void { | |
add_action( 'save_post', [ $this, 'persist_template' ], 10, 2 ); | |
} | |
/** | |
* Persist Template | |
* | |
* @param int $post_id Post ID. | |
* @param \WP_Post $post The post. | |
* | |
* @return void | |
*/ | |
public function persist_template( int $post_id, \WP_Post $post ): void { | |
$filename = self::get_template_filename( $post ); | |
if ( false === $filename || ! self::is_writeable( $filename ) ) { | |
return; | |
} | |
if ( file_put_contents( $filename, $post->post_content ) ) { | |
wp_delete_post( $post->ID, true ); | |
} | |
} | |
/** | |
* Gets the filename for a template. | |
* | |
* @param \WP_Post $post The post object. | |
* | |
* @return string|false The filename or false if the post is not a template. | |
*/ | |
public static function get_template_filename( \WP_Post $post ): string|false { | |
// We only want to persist templates. | |
$template_dir = match ( $post->post_type ) { | |
'wp_template' => 'templates', | |
'wp_template_part' => 'parts', | |
default => false, | |
}; | |
if ( false === $template_dir ) { | |
return false; | |
} | |
return join( | |
'/', | |
[ | |
rtrim( get_stylesheet_directory(), '/' ), | |
$template_dir, | |
$post->post_name . '.html', | |
] | |
); | |
} | |
/** | |
* Checks if a file is writeable | |
* | |
* @param string $filename The filename. | |
* | |
* @return bool True if the file is writeable, false otherwise. | |
*/ | |
public static function is_writeable( string $filename ): bool { | |
$directory = dirname( $filename ); | |
if ( ! is_dir( $directory ) ) { | |
mkdir( $directory, 0755, true ); | |
} | |
return is_writeable( $directory ) && touch( $filename ); | |
} | |
} |
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