block_editor_rest_api_preload( array $preload_paths, WP_Block_Editor_Context $block_editor_context )

Preloads common data used with the block editor by specifying an array of REST API paths that will be preloaded for a given block editor context.


Parameters Parameters

$preload_paths

(array) (Required) List of paths to preload.

$block_editor_context

(WP_Block_Editor_Context) (Required) The current block editor context.


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Return Return

(void)


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Source Source

File: wp-includes/block-editor.php

function block_editor_rest_api_preload( array $preload_paths, $block_editor_context ) {
	global $post;

	/**
	 * Filters the array of REST API paths that will be used to preloaded common data for the block editor.
	 *
	 * @since 5.8.0
	 *
	 * @param string[] $preload_paths Array of paths to preload.
	 */
	$preload_paths = apply_filters( 'block_editor_rest_api_preload_paths', $preload_paths, $block_editor_context );
	if ( ! empty( $block_editor_context->post ) ) {
		$selected_post = $block_editor_context->post;

		/**
		 * Filters the array of paths that will be preloaded.
		 *
		 * Preload common data by specifying an array of REST API paths that will be preloaded.
		 *
		 * @since 5.0.0
		 * @deprecated 5.8.0 Use the {@see 'block_editor_rest_api_preload_paths'} filter instead.
		 *
		 * @param string[] $preload_paths Array of paths to preload.
		 * @param WP_Post  $selected_post Post being edited.
		 */
		$preload_paths = apply_filters_deprecated( 'block_editor_preload_paths', array( $preload_paths, $selected_post ), '5.8.0', 'block_editor_rest_api_preload_paths' );
	}

	if ( empty( $preload_paths ) ) {
		return;
	}

	/*
	 * Ensure the global $post remains the same after API data is preloaded.
	 * Because API preloading can call the_content and other filters, plugins
	 * can unexpectedly modify $post.
	 */
	$backup_global_post = ! empty( $post ) ? clone $post : $post;

	$preload_data = array_reduce(
		$preload_paths,
		'rest_preload_api_request',
		array()
	);

	// Restore the global $post as it was before API preloading.
	$post = $backup_global_post;

	wp_add_inline_script(
		'wp-api-fetch',
		sprintf(
			'wp.apiFetch.use( wp.apiFetch.createPreloadingMiddleware( %s ) );',
			wp_json_encode( $preload_data )
		),
		'after'
	);
}


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Changelog Changelog

Changelog
Version Description
5.8.0 Introduced.

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