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Rewrite Rules: Prevent stampedes when flush_rewrite_rules() is called 

This ensures that the `rewrite_rules` option is not emptied until the new value has been recalculated and the option is updated. The logic for refreshing the option value is moved to a new private method named `WP_Rewrite::refresh_rewrite_rules` which is used by both the `flush_rules` and `refresh_rewrite_rules` methods.

Props iCaleb, joemcgill, flixos90, mukesh27.
Fixes #58998.

Built from https://develop.svn.wordpress.org/trunk@56448


git-svn-id: http://core.svn.wordpress.org/trunk@55960 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Joe McGill 2023-08-24 15:57:17 +00:00
parent 1840a5550a
commit 64e114f233
2 changed files with 26 additions and 10 deletions
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34
wp-includes/class-wp-rewrite.php
View File

@ -1490,18 +1490,35 @@ class WP_Rewrite {
public function wp_rewrite_rules() {
$this->rules = get_option( 'rewrite_rules' );
if ( empty( $this->rules ) ) {
$this->matches = 'matches';
$this->rewrite_rules();
if ( ! did_action( 'wp_loaded' ) ) {
add_action( 'wp_loaded', array( $this, 'flush_rules' ) );
return $this->rules;
}
update_option( 'rewrite_rules', $this->rules );
$this->refresh_rewrite_rules();
}
return $this->rules;
}
/**
* Refreshes the rewrite rules, saving the fresh value to the database.
* If the `wp_loaded` action has not occurred yet, will postpone saving to the database.
*
* @since 6.4.0
*/
private function refresh_rewrite_rules() {
$this->rules = '';
$this->matches = 'matches';
$this->rewrite_rules();
if ( ! did_action( 'wp_loaded' ) ) {
/*
* Is not safe to save the results right now, as the rules may be partial.
* Need to give all rules the chance to register.
*/
add_action( 'wp_loaded', array( $this, 'flush_rules' ) );
} else {
update_option( 'rewrite_rules', $this->rules );
}
}
/**
* Retrieves mod_rewrite-formatted rewrite rules to write to .htaccess.
*
@ -1864,8 +1881,7 @@ class WP_Rewrite {
unset( $do_hard_later );
}
update_option( 'rewrite_rules', '' );
$this->wp_rewrite_rules();
$this->refresh_rewrite_rules();
/**
* Filters whether a "hard" rewrite rule flush should be performed when requested.

2
wp-includes/version.php
View File

@ -16,7 +16,7 @@
*
* @global string $wp_version
*/
$wp_version = '6.4-alpha-56447';
$wp_version = '6.4-alpha-56448';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.