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

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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
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21
src/wp-includes/theme-previews.php
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@@ -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' );
}
}