If someone also need this nowadays WordPress already has another filter that is easier to implement called render_block
Here is an example
[php]function wporg_block_wrapper( $block_content, $block ) {
if ( $block[‘blockName’] === ‘core/paragraph’ ) {
$content = ‘<div class="wp-block-paragraph">’;
$content .= $block_content;
$content .= ‘</div>’;
return $content;
} elseif ( $block[‘blockName’] === ‘core/heading’ ) {
$content = ‘<div class="wp-block-heading">’;
$content .= $block_content;
$content .= ‘</div>’;
return $content;
}
return $block_content;
}
add_filter( ‘render_block’, ‘wporg_block_wrapper’, 10, 2 );[/php]
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