我也遇到了这个问题，我所做的是在PHP中定义属性并使用wp_localize_script 传递数组。

然后您可以将变量传入render_callback 使用use ($var)

例如：

$js = get_stylesheet_directory_uri() . \'/assets/js\';
$css= get_stylesheet_directory_uri() . \'/assets/css\';

$default_attributes = [
  \'alignment\' => [ \'type\' => \'string\', \'default\' => \'left\' ],
  \'iconPosition\' => [ \'type\' => \'string\', \'default\' => \'left\' ],

  \'textColor\' => [ \'type\' => \'string\', \'default\' => \'var(--text)\' ],
  \'bgColor\' => [ \'type\' => \'string\', \'default\' => \'var(--textInvert)\' ],
];


wp_register_script( \'my-block\', $dist . \'/my-block.js\', [ \'wp-blocks\', \'wp-dom\' ] , null, true );
wp_register_style( \'my-block\', $dist . \'/my-block.css\', [ \'wp-edit-blocks\' ] );

wp_localize_script( \'my-block\', \'myBlockLocalize\', [ \'attributes\' => $default_attributes ] );

register_block_type( \'my/block\', [
  \'editor_style\' => \'my-block\',
  \'editor_script\' => \'my-block\',
  \'render_callback\' => function( $atts, $inner_blocks = null ) use ( $default_attributes ) {
      $default_values = array_map( function( $a ) {
        return $a[\'default\'] ?? \'\';
      }, $default_attributes );

      $atts = wp_parse_args( $atts, $default_values );

      ob_start();
      // output the HTML here, I believe you can use get_template_parts()
      return ob_get_clean();
    }
] );

...

registerBlockType( \'my/block\', {
  title: \'My Block\',
  icon: \'id\',
  category: \'layout\',
  example: {},
  attributes: myBlockLocalize.attributes,
  
  // ...

} );

...