Identificatore di Announcement, CourseWork o CourseWorkMaterial a cui è allegato l'allegato. Questo campo è obbligatorio, ma non è contrassegnato come tale durante la migrazione da postId.
Corpo della richiesta
Il corpo della richiesta deve essere vuoto.
Corpo della risposta
In caso di esito positivo, il corpo della risposta contiene un'istanza di AddOnAttachment.
[null,null,["Ultimo aggiornamento 2025-07-25 UTC."],[],[],null,["# Method: courses.posts.addOnAttachments.get\n\n| This method is deprecated; use the `course.announcements.addOnAttachments`, `course.courseWork.addOnAttachments` or `course.courseWorkMaterials.addOnAttachments` method instead.\n\n- [HTTP request](#body.HTTP_TEMPLATE)\n- [Path parameters](#body.PATH_PARAMETERS)\n- [Query parameters](#body.QUERY_PARAMETERS)\n- [Request body](#body.request_body)\n- [Response body](#body.response_body)\n- [Authorization scopes](#body.aspect)\n\nReturns an add-on attachment.\n\nRequires the add-on requesting the attachment to be the original creator of the attachment.\n\nThis method returns the following error codes:\n\n- `PERMISSION_DENIED` for [access errors](/workspace/classroom/reference/Access.Errors).\n- `INVALID_ARGUMENT` if the request is malformed.\n- `NOT_FOUND` if one of the identified resources does not exist.\n\n### HTTP request\n\n`GET https://classroom.googleapis.com/v1/courses/{courseId}/posts/{postId}/addOnAttachments/{attachmentId}`\n\nThe URL uses [gRPC Transcoding](https://google.aip.dev/127) syntax.\n\n### Path parameters\n\n| Parameters ||\n|---------------------------|------------------------------------------------------|\n| `courseId` | `string` Required. Identifier of the course. |\n| `postId` **(deprecated)** | `string` Optional. Deprecated, use `itemId` instead. |\n| `attachmentId` | `string` Required. Identifier of the attachment. |\n\n### Query parameters\n\n| Parameters ||\n|----------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `itemId` | `string` Identifier of the `Announcement`, `CourseWork`, or `CourseWorkMaterial` under which the attachment is attached. This field is required, but is not marked as such while we are migrating from postId. |\n\n### Request body\n\nThe request body must be empty.\n\n### Response body\n\nIf successful, the response body contains an instance of [AddOnAttachment](/workspace/classroom/reference/rest/v1/courses.announcements.addOnAttachments#AddOnAttachment).\n\n### Authorization scopes\n\nRequires one of the following OAuth scopes:\n\n- `https://www.googleapis.com/auth/classroom.addons.student`\n- `\n https://www.googleapis.com/auth/classroom.addons.teacher`\n\nFor more information, see the [Authorization guide](/workspace/guides/configure-oauth-consent)."]]
