Theme_Upgrader::upgrade( string $theme, array $args = array() ): bool|WP_Error
Upgrades a theme.
Parameters
-
$theme
string Required -
The theme slug.
-
$args
array Optional -
Other arguments for upgrading a theme.
clear_update_cache
boolWhether to clear the update cache if successful.
Default true.
Default:
array()
Return
bool|WP_Error True if the upgrade was successful, false or a WP_Error object otherwise.
Source
File: wp-admin/includes/class-theme-upgrader.php
.
View all references
public function upgrade( $theme, $args = array() ) {
$defaults = array(
'clear_update_cache' => true,
);
$parsed_args = wp_parse_args( $args, $defaults );
$this->init();
$this->upgrade_strings();
// Is an update available?
$current = get_site_transient( 'update_themes' );
if ( ! isset( $current->response[ $theme ] ) ) {
$this->skin->before();
$this->skin->set_result( false );
$this->skin->error( 'up_to_date' );
$this->skin->after();
return false;
}
$r = $current->response[ $theme ];
add_filter( 'upgrader_pre_install', array( $this, 'current_before' ), 10, 2 );
add_filter( 'upgrader_post_install', array( $this, 'current_after' ), 10, 2 );
add_filter( 'upgrader_clear_destination', array( $this, 'delete_old_theme' ), 10, 4 );
if ( $parsed_args['clear_update_cache'] ) {
// Clear cache so wp_update_themes() knows about the new theme.
add_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9, 0 );
}
$this->run(
array(
'package' => $r['package'],
'destination' => get_theme_root( $theme ),
'clear_destination' => true,
'clear_working' => true,
'hook_extra' => array(
'theme' => $theme,
'type' => 'theme',
'action' => 'update',
'temp_backup' => array(
'slug' => $theme,
'src' => get_theme_root( $theme ),
'dir' => 'themes',
),
),
)
);
remove_action( 'upgrader_process_complete', 'wp_clean_themes_cache', 9 );
remove_filter( 'upgrader_pre_install', array( $this, 'current_before' ) );
remove_filter( 'upgrader_post_install', array( $this, 'current_after' ) );
remove_filter( 'upgrader_clear_destination', array( $this, 'delete_old_theme' ) );
if ( ! $this->result || is_wp_error( $this->result ) ) {
return $this->result;
}
wp_clean_themes_cache( $parsed_args['clear_update_cache'] );
/*
* Ensure any future auto-update failures trigger a failure email by removing
* the last failure notification from the list when themes update successfully.
*/
$past_failure_emails = get_option( 'auto_plugin_theme_update_emails', array() );
if ( isset( $past_failure_emails[ $theme ] ) ) {
unset( $past_failure_emails[ $theme ] );
update_option( 'auto_plugin_theme_update_emails', $past_failure_emails );
}
return true;
}
Changelog
Version | Description |
---|---|
3.7.0 | The $args parameter was added, making clearing the update cache optional. |
2.8.0 | Introduced. |