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.
attachmentId
string
Required. Identifier of the attachment.
Query parameters
Parameters
postId (deprecated)
string
Optional. Deprecated, use itemId instead.
Request body
The request body must be empty.
Response body
If successful, the response body contains an instance of AddOnAttachment.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-17 UTC."],[],[],null,["- [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\nHTTP request\n\n`GET https://classroom.googleapis.com/v1/courses/{courseId}/courseWork/{itemId}/addOnAttachments/{attachmentId}`\n\nThe URL uses [gRPC Transcoding](https://google.aip.dev/127) syntax.\n\nPath parameters\n\n| Parameters ||\n|----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `courseId` | `string` Required. Identifier of the course. |\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| `attachmentId` | `string` Required. Identifier of the attachment. |\n\nQuery parameters\n\n| Parameters ||\n|---------------------------|------------------------------------------------------|\n| `postId` **(deprecated)** | `string` Optional. Deprecated, use `itemId` instead. |\n\nRequest body\n\nThe request body must be empty.\n\nResponse body\n\nIf successful, the response body contains an instance of [AddOnAttachment](/workspace/classroom/reference/rest/v1/courses.announcements.addOnAttachments#AddOnAttachment).\n\nAuthorization 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)."]]