Loại tệp đính kèm hoạt động

Python

Trong ví dụ mà chúng tôi cung cấp, thao tác này nằm trong phương thức create_attachments trong tệp webapp/attachment_routes.py.

attachment = {
    # Specifies the route for a teacher user.
    "teacherViewUri": {
        "uri":
            flask.url_for(
                "load_activity_attachment",
                _scheme='https',
                _external=True),
    },
    # Specifies the route for a student user.
    "studentViewUri": {
        "uri":
            flask.url_for(
                "load_activity_attachment",
                _scheme='https',
                _external=True)
    },
    # Specifies the route for a teacher user when the attachment is
    # loaded in the Classroom grading view.
    # The presence of this field marks this as an activity-type attachment.
    "studentWorkReviewUri": {
        "uri":
            flask.url_for(
                "view_submission", _scheme='https', _external=True)
    },
    # The title of the attachment.
    "title": f"Attachment {attachment_count}",
}

Python

Mở rộng quy trình triển khai SQLite và flask_sqlalchemy từ các bước trước.

Chuyển đến tệp mà bạn đã xác định các bảng trước đó (models.py nếu bạn đang làm theo ví dụ được cung cấp của chúng tôi). Thêm nội dung sau vào cuối tệp.

# Database model to represent a student submission.
class Submission(db.Model):
    # The attachmentId is the unique identifier for the attachment.
    submission_id = db.Column(db.String(120), primary_key=True)

    # The unique identifier for the student's submission.
    attachment_id = db.Column(db.String(120), primary_key=True)

    # The student's response to the question prompt.
    student_response = db.Column(db.String(120))

Nhập lớp Submission mới vào tệp máy chủ với các tuyến xử lý tệp đính kèm của bạn.

Python

Trong ví dụ mà chúng tôi cung cấp, thao tác này nằm trong phương thức load_activity_attachment trong tệp webapp/attachment_routes.py.

# Issue a request to the courseWork.getAddOnContext endpoint
addon_context_response = classroom_service.courses().courseWork(
).getAddOnContext(
    courseId=flask.session["courseId"],
    itemId=flask.session["itemId"]).execute()

# One of studentContext or teacherContext will be populated.
user_context = "student" if addon_context_response.get(
    "studentContext") else "teacher"

# If the user is a student...
if user_context == "student":
    # Extract the submissionId from the studentContext object.
    # This value is provided by Google Classroom.
    flask.session["submissionId"] = addon_context_response.get(
            "studentContext").get("submissionId")

Python

Trong ví dụ được cung cấp, đây là phần tiếp theo của phương thức load_activity_attachment ở trên.

# Issue a request to get the status of the student submission.
submission_response = classroom_service.courses().courseWork(
).addOnAttachments().studentSubmissions().get(
    courseId=flask.session["courseId"],
    itemId=flask.session["itemId"],
    attachmentId=flask.session["attachmentId"],
    submissionId=flask.session["submissionId"]).execute()

Python

Trong ví dụ được cung cấp, đây là phần tiếp theo của phương thức load_activity_attachment ở trên.

# Look up the attachment in the database.
attachment = Attachment.query.get(flask.session["attachmentId"])

message_str = f"I see that you're a {user_context}! "
message_str += (
    f"I've loaded the attachment with ID {attachment.attachment_id}. "
    if user_context == "teacher" else
    "Please complete the activity below.")

form = activity_form_builder()

if form.validate_on_submit():
    # Record the student's response in our database.

    # Check if the student has already submitted a response.
    # If so, update the response stored in the database.
    student_submission = Submission.query.get(flask.session["submissionId"])

    if student_submission is not None:
        student_submission.student_response = form.student_response.data
    else:
        # Store the student's response by the submission ID.
        new_submission = Submission(
            submission_id=flask.session["submissionId"],
            attachment_id=flask.session["attachmentId"],
            student_response=form.student_response.data)
        db.session.add(new_submission)

    db.session.commit()

    return flask.render_template(
        "acknowledge-submission.html",
        message="Your response has been recorded. You can close the " \
            "iframe now.",
        instructions="Please Turn In your assignment if you have " \
            "completed all tasks."
    )

# Show the activity.
return flask.render_template(
    "show-activity-attachment.html",
    message=message_str,
    image_filename=attachment.image_filename,
    image_caption=attachment.image_caption,
    user_context=user_context,
    form=form,
    responses=response_strings)

Để phân biệt người dùng, hãy cân nhắc tắt hàm gửi và hiện câu trả lời đúng trong Chế độ xem dành cho giáo viên.

Python

Trong ví dụ đã cung cấp, chúng nằm trong tệp webapp/attachment_routes.py.

@app.route("/view-submission")
def view_submission():
    """
    Render a student submission using the show-student-submission.html template.
    """

    # Save the query parameters passed to the iframe in the session, just as we did
    # in previous routes. Abbreviated here for readability.
    add_iframe_query_parameters_to_session(flask.request.args)

    # For the sake of brevity in this example, we'll skip the conditional logic
    # to see if we need to authorize the user as we have done in previous steps.
    # We can assume that the user that reaches this route is a teacher that has
    # already authorized and created an attachment using the add-on.

    # In production, we recommend fully validating the user's authorization at
    # this stage as well.

    # Look up the student's submission in our database.
    student_submission = Submission.query.get(flask.session["submissionId"])

    # Look up the attachment in the database.
    attachment = Attachment.query.get(student_submission.attachment_id)

    # Render the student's response alongside the correct answer.
    return flask.render_template(
        "show-student-submission.html",
        message=f"Loaded submission {student_submission.submission_id} for "\
            f"attachment {attachment.attachment_id}.",
        student_response=student_submission.student_response,
        correct_answer=attachment.image_caption)