wp-includes/blocks/navigation.php:518Gets the inner blocks for the navigation block.
$attributesarray$blockWP_BlockWP_Block_ListOne hook fires while WP_Navigation_Block_Renderer::get_inner_blocks() runs, in this order:
Filter navigation block $inner_blocks.
private static function get_inner_blocks( $attributes, $block ) { $inner_blocks = $block->inner_blocks; // Ensure that blocks saved with the legacy ref attribute name (navigationMenuId) continue to render. if ( array_key_exists( 'navigationMenuId', $attributes ) ) { $attributes['ref'] = $attributes['navigationMenuId']; } // If: // - the gutenberg plugin is active // - `__unstableLocation` is defined // - we have menu items at the defined location // - we don't have a relationship to a `wp_navigation` Post (via `ref`). // ...then create inner blocks from the classic menu assigned to that location. if ( defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN && array_key_exists( '__unstableLocation', $attributes ) && ! array_key_exists( 'ref', $attributes ) && ! empty( block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] ) ) ) { $inner_blocks = block_core_navigation_get_inner_blocks_from_unstable_location( $attributes ); } // Load inner blocks from the navigation post. if ( array_key_exists( 'ref', $attributes ) ) { $inner_blocks = static::get_inner_blocks_from_navigation_post( $attributes ); } // If there are no inner blocks then fallback to rendering an appropriate fallback. if ( empty( $inner_blocks ) ) { $inner_blocks = static::get_inner_blocks_from_fallback( $attributes ); } /** * Filter navigation block $inner_blocks. * Allows modification of a navigation block menu items. * * @since 6.1.0 * * @param \WP_Block_List $inner_blocks */ $inner_blocks = apply_filters( 'block_core_navigation_render_inner_blocks', $inner_blocks ); $post_ids = block_core_navigation_get_post_ids( $inner_blocks ); if ( $post_ids ) { _prime_post_caches( $post_ids, false, false ); } return $inner_blocks; }Introduced in 6.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/blocks/navigation.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.