eligibility_response=(classroom_service.userProfiles().checkUserCapability(userId="me",capability="CREATE_ADD_ON_ATTACHMENT",# The previewVersion is necessary while the method is available in the# Workspace Developer Preview Program.previewVersion="V1_20240930_PREVIEW",).execute())is_create_attachment_eligible=(eligibility_response.get('allowed'))print('User eligibility for add-on attachment creation: 'f'{is_create_attachment_eligible}.')
ifnotis_create_attachment_eligible:coursework={'title':'My CourseWork Assignment with Link Material','description':'Created using the Classroom CourseWork API.','workType':'ASSIGNMENT','state':'DRAFT',# Set to 'PUBLISHED' to assign to students.'maxPoints':100,'materials':[{'link':{'url':my_content_url}}]}assignment=(service.courses().courseWork().create(courseId=course_id,body=coursework).execute())print(f'Link Material assignment created with ID: {assignment.get("id")}')
响应包含所请求课程中的作业,并附有相应内容。用户可以点击 Link 在新标签页中打开您网站上的内容。
ifis_create_attachment_eligible:coursework={'title':'My CourseWork Assignment with Add-on Attachment','description':'Created using the Classroom CourseWork API.','workType':'ASSIGNMENT','state':'DRAFT',# Set to 'PUBLISHED' to assign to students.'maxPoints':100,}assignment=(classroom_service.courses().courseWork().create(courseId=course_id,body=coursework).execute())print(f'Empty assignment created with ID: {assignment.get("id")}')attachment={'teacherViewUri':{'uri':teacher_view_url},'studentViewUri':{'uri':student_view_url},'studentWorkReviewUri':{'uri':grade_student_work_url},'title':f'Test Attachment {test_label}',}add_on_attachment=(service.courses().courseWork().addOnAttachments().create(courseId=course_id,itemId=assignment.get("id"),# ID of the new assignment.body=attachment,).execute())print(f'Add-on attachment created with ID: {add_on_attachment.get("id")}')
该插件会以附件卡片的形式显示在 Google 课堂中。请求中指定的网址会在每个视图的相应 iframe 中打开。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-08-04。"],[],[],null,["This guide addresses creating add-on attachments in your website or application.\nThe interactions are similar to [creating assignments using the CourseWork API\nendpoints](/workspace/classroom/guides/manage-coursework#create_assignments). Implement this journey to allow users to create add-on attachments\nfrom your website or application.\n| **Important:** We strongly recommend implementing this attachment creation flow if you already create [`CourseWork`](/workspace/classroom/reference/rest/v1/courses.courseWork) assignments. Extending a CourseWork implementation lets you convert many more users to your add-on and requires little additional work.\n\nWorkflow\n\nAt a high level, the attachment creation journey follows this sequence:\n\n1. A teacher user opens your website or app. They select a piece of content to assign to their students.\n2. [Check that the user can create add-on attachments](#check-whether).\n3. If the user **can't** create add-on attachments, create a CourseWork assignment with the URL to the selected content as a Link Material.\n4. If the user **can** create add-on attachments, do the following:\n 1. Create an assignment.\n 2. Create an add-on attachment that links to the selected content and associate it with the new assignment.\n5. Inform the teacher that the assignment has been created successfully.\n\nEach action is described in the following sections.\n\nCheck whether a user can create add-on attachments\n\nYou can create add-on attachments on behalf of an eligible user. An eligible\nuser is a user who is a teacher in the course you are trying to create\nCourseWork assignments in **and** has the Teaching \\& Learning or Education Plus\nGoogle Workspace for Education edition license assigned to them.\n| **Key Point:** Eligibility to create add-on attachments may be different for each user and can change over time. Always check the user's eligibility before attempting to create add-on attachments.\n| **Important:** Eligibility checks using the Classroom API are in public preview and available in preview version `V1_20240930_PREVIEW` and later. To use API methods in public preview, you must be part of the [Google Workspace Developer Preview Program](/workspace/preview) and [perform additional setup](/workspace/classroom/reference/preview) beyond typical Classroom API usage.\n\nBegin by determining whether the user can create add-on attachments. You can do\nso by issuing a request to the [`userProfiles.checkUserCapability`](/workspace/classroom/reference/rest/v1/userProfiles/checkUserCapability) endpoint\nwith the `CREATE_ADD_ON_ATTACHMENT` capability parameter. Inspect the boolean\n`allowed` field in the response; a `true` value indicates that the user is\neligible to create add-on attachments.\n**Warning:** Requests to create add-on attachments for users with the `CREATE_ADD_ON_ATTACHMENT` capability are not guaranteed to succeed. For example, a user with the capability will receive a `403` response error if you attempt to create add-on attachments on their behalf in a course in which the user is not a teacher. \n\nPython \n\n eligibility_response = (\n classroom_service.userProfiles()\n .checkUserCapability(\n userId=\"me\",\n capability=\"CREATE_ADD_ON_ATTACHMENT\",\n # The previewVersion is necessary while the method is available in the\n # Workspace Developer Preview Program.\n previewVersion=\"V1_20240930_PREVIEW\",\n ).execute()\n )\n is_create_attachment_eligible = (\n eligibility_response.get('allowed')\n )\n print('User eligibility for add-on attachment creation: '\n f'{is_create_attachment_eligible}.')\n\nRoute the user based on their eligibility\n\nEligibility determines whether you can create add-on attachments for a user.\n| **Important:** Add-ons offer significant user experience advantages. Always create add-on attachments for eligible users.\n\nIneligible user\n\nIf the user *can't* create add-on attachments, then create a new [`CourseWork`](/workspace/classroom/reference/rest/v1/courses.courseWork)\nassignment with the user-selected content URL as a [`Link`](/workspace/classroom/reference/rest/v1/Material). \n\nPython \n\n if not is_create_attachment_eligible:\n coursework = {\n 'title': 'My CourseWork Assignment with Link Material',\n 'description': 'Created using the Classroom CourseWork API.',\n 'workType': 'ASSIGNMENT',\n 'state': 'DRAFT', # Set to 'PUBLISHED' to assign to students.\n 'maxPoints': 100,\n 'materials': [\n {'link': {'url': my_content_url}}\n ]\n }\n\n assignment = (\n service.courses()\n .courseWork()\n .create(courseId=course_id, body=coursework)\n .execute()\n )\n\n print(\n f'Link Material assignment created with ID: {assignment.get(\"id\")}'\n )\n\nThe response contains an assignment in the requested course with the content\nattached. Users can click the `Link` to open the content in your site in a new\ntab.\n\n**Figure 1.** Teacher view of a draft CourseWork assignment with Link Material.\n\nEligible user\n\nDo the following if the user *can* create add-on attachments.\n\n1. Create a new `CourseWork` assignment without any attachments.\n2. Create an add-on attachment.\n - Set the[`AddOnAttachment`](/workspace/classroom/reference/rest/v1/courses.courseWork.addOnAttachments#resource:-addonattachment)'s `itemId` to the `id` of the newly created assignment.\n - Ensure that you provide URLs to the user-selected content for [each View\n that you support](/workspace/classroom/add-ons/get-started/iframes/iframes-overview).\n\nPython \n\n if is_create_attachment_eligible:\n coursework = {\n 'title': 'My CourseWork Assignment with Add-on Attachment',\n 'description': 'Created using the Classroom CourseWork API.',\n 'workType': 'ASSIGNMENT',\n 'state': 'DRAFT', # Set to 'PUBLISHED' to assign to students.\n 'maxPoints': 100,\n }\n\n assignment = (\n classroom_service.courses()\n .courseWork()\n .create(courseId=course_id, body=coursework)\n .execute()\n )\n\n print(\n f'Empty assignment created with ID: {assignment.get(\"id\")}'\n )\n\n attachment = {\n 'teacherViewUri': {'uri': teacher_view_url},\n 'studentViewUri': {'uri': student_view_url},\n 'studentWorkReviewUri': {'uri': grade_student_work_url},\n 'title': f'Test Attachment {test_label}',\n }\n\n add_on_attachment = (\n service.courses()\n .courseWork()\n .addOnAttachments()\n .create(\n courseId=course_id,\n itemId=assignment.get(\"id\"), # ID of the new assignment.\n body=attachment,\n )\n .execute()\n )\n\n print(\n f'Add-on attachment created with ID: {add_on_attachment.get(\"id\")}'\n )\n\n| **Note:** An add-on token is not required if creating an attachment on an assignment that you created.\n\nThe add-on appears as an [attachment card](/workspace/classroom/add-ons/get-started/attachments-journey) in Classroom. The URLs\nspecified in the request open in the appropriate\n[iframe for each View](/workspace/classroom/add-ons/get-started/iframes/iframes-overview)."]]