HTML Attributes Customizer for Blocks

Yes. Register a token in the editor reference, resolve it on the front end, then use it in attribute values as {{my.plugin.token}} .

add_filter( 'htmlbac_variable_definitions', function ( $definitions ) { $definitions[] = array( 'key' => 'my.plugin.token', 'group' => 'other', 'description' => __( 'Example custom token for HTML attributes.', 'my-plugin' ), ); return $definitions; } );

add_filter( 'htmlbac_resolve_variable', function ( $value, $key ) { if ( 'my.plugin.token' === $key ) { return esc_attr( 'hello-from-my-plugin' ); } return $value; }, 10, 2 );

add_filter( 'htmlbac_variable_replacements', function ( $replacements ) { $replacements['my.plugin.token'] = esc_attr( 'hello-from-my-plugin' ); return $replacements; } );

Some blocks have an “Inner element” field. Why?

Enable inner attributes for more blocks (built-in strategies):

add_filter( 'htmlbac_inner_target_blocks', function ( $strategies ) { $strategies['core/columns'] = 'first_div'; $strategies['core/button'] = 'first_a'; return $strategies; } );

add_filter( 'htmlbac_inner_target_blocks', function ( $strategies ) { $strategies['my-plugin/my-block'] = 'my_first_button'; return $strategies; } ); add_filter( 'htmlbac_apply_inner_strategy', function ( $block_content, $entries, $strategy, $block_name ) { if ( 'my_first_button' !== $strategy || 'my-plugin/my-block' !== $block_name ) { return $block_content; } if ( ! class_exists( 'WP_HTML_Tag_Processor' ) ) { return $block_content; } $processor = new WP_HTML_Tag_Processor( $block_content ); if ( ! $processor->next_tag( 'button' ) ) { return $block_content; } foreach ( $entries as $entry ) { $name = isset( $entry['name'] ) ? (string) $entry['name'] : ''; if ( '' === $name ) { continue; } if ( null === $entry['value'] ) { $processor->set_attribute( $name, true ); continue; } $processor->set_attribute( $name, (string) $entry['value'] ); } return $processor->get_updated_html(); }, 10, 4 );