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General: Introduce the ability to merge multiple WP_Error objects into one another, and to store more than one item of data for an error.

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This allows multiple errors to be instantiated independently but collected into one without having to manually combine their properties.

Props rmccue, dlh, TimothyBlynJacobs

Fixes #38777

Built from https://develop.svn.wordpress.org/trunk@49115


git-svn-id: http://core.svn.wordpress.org/trunk@48877 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
John Blackbourn 2020-10-09 22:22:05 +00:00
parent 92dacfafaf
commit 543b14ed0a
2 changed files with 95 additions and 17 deletions
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110
wp-includes/class-wp-error.php
View File

@ -2,8 +2,6 @@
/**
* WordPress Error API.
*
* Contains the WP_Error class and the is_wp_error() function.
*
* @package WordPress
*/
@ -27,7 +25,7 @@ class WP_Error {
public $errors = array();
/**
* Stores the list of data for error codes.
* Stores the most-recently added data for each error code.
*
* @since 2.1.0
* @var array
@ -35,7 +33,15 @@ class WP_Error {
public $error_data = array();
/**
* Initialize the error.
* Stores previously added data added for error codes, oldest-to-newest by code.
*
* @since 5.6.0
* @var array[]
*/
protected $additional_data = array();
/**
* Initializes the error.
*
* If `$code` is empty, the other parameters will be ignored.
* When `$code` is not empty, `$message` will be used even if
@ -60,7 +66,7 @@ class WP_Error {
}
/**
* Retrieve all error codes.
* Retrieves all error codes.
*
* @since 2.1.0
*
@ -75,7 +81,7 @@ class WP_Error {
}
/**
* Retrieve first error code available.
* Retrieves the first error code available.
*
* @since 2.1.0
*
@ -92,12 +98,12 @@ class WP_Error {
}
/**
* Retrieve all error messages or error messages matching code.
* Retrieves all error messages, or the error messages for the given error code.
*
* @since 2.1.0
*
* @param string|int $code Optional. Retrieve messages matching code, if exists.
* @return array Error strings on success, or empty array on failure (if using code parameter).
* @return array Error strings on success, or empty array if there are none.
*/
public function get_error_messages( $code = '' ) {
// Return all messages if no code specified.
@ -118,7 +124,7 @@ class WP_Error {
}
/**
* Get single error message.
* Gets a single error message.
*
* This will get the first message available for the code. If no code is
* given then the first code available will be used.
@ -126,7 +132,7 @@ class WP_Error {
* @since 2.1.0
*
* @param string|int $code Optional. Error code to retrieve message.
* @return string
* @return string The error message.
*/
public function get_error_message( $code = '' ) {
if ( empty( $code ) ) {
@ -140,7 +146,7 @@ class WP_Error {
}
/**
* Retrieve error data for error code.
* Retrieves the most-recently added error data for an error code.
*
* @since 2.1.0
*
@ -158,11 +164,11 @@ class WP_Error {
}
/**
* Verify if the instance contains errors.
* Verifies if the instance contains errors.
*
* @since 5.1.0
*
* @return bool
* @return bool If the instance contains errors.
*/
public function has_errors() {
if ( ! empty( $this->errors ) ) {
@ -201,11 +207,10 @@ class WP_Error {
}
/**
* Add data for error code.
*
* The error code can only contain one error data.
* Adds data to an error with the given code.
*
* @since 2.1.0
* @since 5.6.0 Errors can now contain more than one item of error data. {@see WP_Error::$additional_data}.
*
* @param mixed $data Error data.
* @param string|int $code Error code.
@ -215,9 +220,39 @@ class WP_Error {
$code = $this->get_error_code();
}
if ( isset( $this->error_data[ $code ] ) ) {
$this->additional_data[ $code ][] = $this->error_data[ $code ];
}
$this->error_data[ $code ] = $data;
}
/**
* Retrieves all error data for an error code in the order in which the data was added.
*
* @since 5.6.0
*
* @param string|int $code Error code.
* @return mixed[] Array of error data, if it exists.
*/
public function get_all_error_data( $code = '' ) {
if ( empty( $code ) ) {
$code = $this->get_error_code();
}
$data = array();
if ( isset( $this->additional_data[ $code ] ) ) {
$data = $this->additional_data[ $code ];
}
if ( isset( $this->error_data[ $code ] ) ) {
$data[] = $this->error_data[ $code ];
}
return $data;
}
/**
* Removes the specified error.
*
@ -231,5 +266,48 @@ class WP_Error {
public function remove( $code ) {
unset( $this->errors[ $code ] );
unset( $this->error_data[ $code ] );
unset( $this->additional_data[ $code ] );
}
/**
* Merges the errors in the given error object into this one.
*
* @since 5.6.0
*
* @param WP_Error $error Error object to merge.
*/
public function merge_from( WP_Error $error ) {
static::copy_errors( $error, $this );
}
/**
* Exports the errors in this object into the given one.
*
* @since 5.6.0
*
* @param WP_Error $error Error object to export into.
*/
public function export_to( WP_Error $error ) {
static::copy_errors( $this, $error );
}
/**
* Copies errors from one WP_Error instance to another.
*
* @since 5.6.0
*
* @param WP_Error $from From.
* @param WP_Error $to To.
*/
protected static function copy_errors( WP_Error $from, WP_Error $to ) {
foreach ( $from->get_error_codes() as $code ) {
foreach ( $from->get_error_messages( $code ) as $error_message ) {
$to->add( $code, $error_message );
}
foreach ( $from->get_all_error_data( $code ) as $data ) {
$to->add_data( $data, $code );
}
}
}
}

2
wp-includes/version.php
View File

@ -13,7 +13,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.6-alpha-49114';
$wp_version = '5.6-alpha-49115';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.