Editor: Prevent possibility of a fatal error when previewing block themes.

Ensures that preview callbacks attached to the `stylesheet` and `template` filters do not run before `pluggable.php` has been included. These callbacks need functionality from `pluggable.php`.

Props: scruffian, johnbillion, SergeyBiryukov, okat, okat.
Fixes: #59000.

git-svn-id: https://develop.svn.wordpress.org/trunk@56529 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Andrew Ozz 2023-09-06 21:46:09 +00:00
parent 476db82c2f
commit e14213ebe9
3 changed files with 45 additions and 6 deletions

View File

@ -532,6 +532,9 @@ add_action( 'admin_enqueue_scripts', '_wp_customize_loader_settings' );
add_action( 'delete_attachment', '_delete_attachment_theme_mod' );
add_action( 'transition_post_status', '_wp_keep_alive_customize_changeset_dependent_auto_drafts', 20, 3 );
// Block Theme Previews.
add_action( 'plugins_loaded', 'initialize_theme_preview_hooks', 1 );
// Calendar widget cache.
add_action( 'save_post', 'delete_get_calendar_cache' );
add_action( 'delete_post', 'delete_get_calendar_cache' );

View File

@ -75,10 +75,19 @@ function wp_block_theme_activate_nonce() {
<?php
}
// Attaches filters to enable theme previews in the Site Editor.
if ( ! empty( $_GET['wp_theme_preview'] ) ) {
add_filter( 'stylesheet', 'wp_get_theme_preview_path' );
add_filter( 'template', 'wp_get_theme_preview_path' );
add_action( 'init', 'wp_attach_theme_preview_middleware' );
add_action( 'admin_head', 'wp_block_theme_activate_nonce' );
/**
* Add filters and actions to enable Block Theme Previews in the Site Editor.
*
* The filters and actions should be added after `pluggable.php` is included as they may
* trigger code that uses `current_user_can()` which requires functionality from `pluggable.php`.
*
* @since 6.3.2
*/
function initialize_theme_preview_hooks() {
if ( ! empty( $_GET['wp_theme_preview'] ) ) {
add_filter( 'stylesheet', 'wp_get_theme_preview_path' );
add_filter( 'template', 'wp_get_theme_preview_path' );
add_action( 'init', 'wp_attach_theme_preview_middleware' );
add_action( 'admin_head', 'wp_block_theme_activate_nonce' );
}
}

View File

@ -0,0 +1,27 @@
<?php
/**
* test wp-includes/theme-previews.php
*
* @group themes
*/
class Tests_Theme_Previews extends WP_UnitTestCase {
public function set_up() {
parent::set_up();
}
public function tear_down() {
unset( $_GET['wp_theme_preview'] );
parent::tear_down();
}
public function test_initialize_theme_preview_hooks() {
$_GET['wp_theme_preview'] = 'twentytwentythree';
do_action( 'plugins_loaded' ); // Ensure `plugins_loaded` triggers `initialize_theme_preview_hooks`.
$this->assertEquals( has_filter( 'stylesheet', 'wp_get_theme_preview_path' ), 10 );
$this->assertEquals( has_filter( 'template', 'wp_get_theme_preview_path' ), 10 );
$this->assertEquals( has_action( 'init', 'wp_attach_theme_preview_middleware' ), 10 );
$this->assertEquals( has_action( 'admin_head', 'wp_block_theme_activate_nonce' ), 10 );
}
}