Title: Message::__construct
Published: May 20, 2026

---

# Message::__construct( WordPressAiClientMessagesEnumsMessageRoleEnum $role, WordPressAiClientMessagesDTOMessagePart[] $parts )

## In this article

 * [Parameters](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/__construct/?output_format=md#parameters)
 * [Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/__construct/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/__construct/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/__construct/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/__construct/?output_format=md#wp--skip-link--target)

Constructor.

## 󠀁[Parameters](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/__construct/?output_format=md#parameters)󠁿

 `$role`WordPressAiClientMessagesEnumsMessageRoleEnumrequired

The role of the message sender.

`$parts`WordPressAiClientMessagesDTOMessagePart[]required

The parts that make up this message.

## 󠀁[Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/__construct/?output_format=md#source)󠁿

    ```php
    public function __construct(MessageRoleEnum $role, array $parts)
    {
        $this->role = $role;
        $this->parts = $parts;
        $this->validateParts();
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/php-ai-client/src/messages/dto/message.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/php-ai-client/src/Messages/DTO/Message.php#L47)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Messages/DTO/Message.php#L47-L52)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/__construct/?output_format=md#related)󠁿

| Uses | Description | 
| [Message::validateParts()](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/validateparts/)`wp-includes/php-ai-client/src/Messages/DTO/Message.php` |

Validates that the message parts are appropriate for the message role.

  |

| Used by | Description | 
| [ModelMessage::__construct()](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-modelmessage/__construct/)`wp-includes/php-ai-client/src/Messages/DTO/ModelMessage.php` |

Constructor.

  | 
| [UserMessage::__construct()](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-usermessage/__construct/)`wp-includes/php-ai-client/src/Messages/DTO/UserMessage.php` |

Constructor.

  | 
| [Message::withPart()](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/withpart/)`wp-includes/php-ai-client/src/Messages/DTO/Message.php` |

Returns a new instance with the given part appended.

  | 
| [PromptBuilder::parseMessage()](https://developer.wordpress.org/reference/classes/wordpress-aiclient-builders-promptbuilder/parsemessage/)`wp-includes/php-ai-client/src/Builders/PromptBuilder.php` |

Parses various input types into a Message with the given role.

  | 
| [MessageBuilder::get()](https://developer.wordpress.org/reference/classes/wordpress-aiclient-builders-messagebuilder/get/)`wp-includes/php-ai-client/src/Builders/MessageBuilder.php` |

Builds and returns the Message object.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-messages-dto-message/__construct/?output_format=md#changelog)󠁿

| Version | Description | 
| [0.1.0](https://developer.wordpress.org/reference/since/0.1.0/) | Introduced. |

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