{"courseId": string,"postId": string,"itemId": string,"supportsStudentWork": boolean,// Union field context can be only one of the following:"studentContext": {object (StudentContext)},"teacherContext": {object (TeacherContext)}// End of list of possible types for union field context.}
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-07-25 UTC。"],[],[],null,["- [JSON representation](#SCHEMA_REPRESENTATION)\n- [StudentContext](#StudentContext)\n - [JSON representation](#StudentContext.SCHEMA_REPRESENTATION)\n- [TeacherContext](#TeacherContext)\n\nAttachment-relevant metadata for Classroom add-ons in the context of a specific post.\n\n| JSON representation |\n|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ``` { \"courseId\": string, \"postId\": string, \"itemId\": string, \"supportsStudentWork\": boolean, // Union field `context` can be only one of the following: \"studentContext\": { object (/workspace/classroom/reference/rest/v1/AddOnContext#StudentContext) }, \"teacherContext\": { object (/workspace/classroom/reference/rest/v1/AddOnContext#TeacherContext) } // End of list of possible types for union field `context`. } ``` |\n\n| Fields ||\n|---------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `courseId` | `string` Immutable. Identifier of the course. |\n| `postId` **(deprecated)** | `string` | This item is deprecated! Immutable. Deprecated, use `itemId` instead. |\n| `itemId` | `string` Immutable. Identifier of the `Announcement`, `CourseWork`, or `CourseWorkMaterial` under which the attachment is attached. |\n| `supportsStudentWork` | `boolean` Optional. Whether the post allows the teacher to see student work and passback grades. |\n| Union field `context`. `context` can be only one of the following: ||\n| `studentContext` | `object (`[StudentContext](/workspace/classroom/reference/rest/v1/AddOnContext#StudentContext)`)` Add-on context corresponding to the requesting user's role as a student. Its presence implies that the requesting user is a student in the course. |\n| `teacherContext` | `object (`[TeacherContext](/workspace/classroom/reference/rest/v1/AddOnContext#TeacherContext)`)` Add-on context corresponding to the requesting user's role as a teacher. Its presence implies that the requesting user is a teacher in the course. |\n\nStudentContext Role-specific context if the requesting user is a student.\n\n| JSON representation |\n|------------------------------------|\n| ``` { \"submissionId\": string } ``` |\n\n| Fields ||\n|----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `submissionId` | `string` Requesting user's submission id to be used for grade passback and to identify the student when showing student work to the teacher. This is set exactly when `supportsStudentWork` is `true`. |\n\nTeacherContext\n\nThis type has no fields.\nRole-specific context if the requesting user is a teacher."]]