Add custom_attributes field to OrganizationMembership

[ajworkos]

Summary

Adds custom_attributes field to OrganizationMembership model to expose custom attributes from identity providers.

Changes

• Added custom_attributes field to OrganizationMembership type/model
• Field type: Record/Map/Dictionary of string keys to any values
• Always present, defaults to empty object {}
• Updated fixtures and tests

API Field Details

The field will be present in:

• REST API responses
• Webhook events
• Events API responses

JSON field name: custom_attributes (snake_case)

[greptile-apps]

Greptile Overview

Greptile Summary

This PR adds the idpAttributes field to the OrganizationMembership resource, enabling access to custom attributes from identity providers.

Key Changes:

• Added @property array<string, mixed> $idpAttributes PHPDoc annotation
• Added "idpAttributes" to RESOURCE_ATTRIBUTES array
• Added "idp_attributes" => "idpAttributes" mapping in RESPONSE_TO_RESOURCE_KEY
• Updated test fixtures with empty idp_attributes arrays

Implementation:
The field follows the existing SDK pattern: API responses use snake_case (idp_attributes), which gets automatically mapped to camelCase (idpAttributes) for PHP property access. The implementation is consistent with other fields like userId, organizationId, createdAt, and updatedAt.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• The implementation follows established patterns in the codebase, properly handles the field mapping, includes appropriate type documentation, and updates test fixtures. No security concerns identified - the field doesn't contain sensitive authentication data and follows existing patterns for similar fields.
• No files require special attention

Important Files Changed

Filename	Overview
lib/Resource/OrganizationMembership.php	Added idpAttributes field with proper PHPDoc, RESOURCE_ATTRIBUTES entry, and snake_case to camelCase mapping
tests/WorkOS/UserManagementTest.php	Updated test fixtures to include empty idp_attributes array in mock responses

Sequence Diagram

sequenceDiagram
    participant API as WorkOS API
    participant Client as PHP SDK Client
    participant Resource as OrganizationMembership Resource
    participant App as Application Code

    API->>Client: Response with idp_attributes field
    Note over API,Client: JSON: {"idp_attributes": {"department": "eng"}}
    
    Client->>Resource: constructFromResponse($response)
    Note over Resource: Maps "idp_attributes" → "idpAttributes"
    Resource->>Resource: Store in $values["idpAttributes"]
    
    App->>Resource: Access $membership->idpAttributes
    Resource->>App: Returns array<string, mixed>
    Note over App: Contains IDP custom attributes

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[greptile-apps]

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