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POST
/
api
/
assignment
/
submit
curl --request POST \
  --url http://localhost:5000/api/assignment/submit \
  --header 'Content-Type: application/json' \
  --data '{
    "assignmentId": "64b8f1a2c3d4e5f678905678",
    "studentId": "64b8f1a2c3d4e5f678901234",
    "fileUrl": "https://storage.example.com/submissions/essay-final.pdf",
    "submittedAt": "2026-03-18T14:30:00.000Z"
  }'

{
  "_id": "64d0b4c8e3f2a1b096785432",
  "assignmentId": "64b8f1a2c3d4e5f678905678",
  "studentId": "64b8f1a2c3d4e5f678901234",
  "fileUrl": "https://storage.example.com/submissions/essay-final.pdf",
  "submittedAt": "2026-03-18T14:30:00.000Z",
  "__v": 0
}

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Creates a new assignment submission record. Pass the assignment and student identifiers, a URL pointing to the submitted file, and the submission timestamp.
This endpoint requires no authentication.

​
Request

​
Body parameters

​
assignmentId
string
required
The MongoDB ObjectId of the assignment being submitted. Must be a valid 24-character hex string.
​
studentId
string
required
The MongoDB ObjectId of the student submitting the assignment. Must be a valid 24-character hex string.
​
fileUrl
string
required
A URL pointing to the submitted file (e.g., a cloud storage URL). The file must be accessible at this URL at the time of grading.
​
submittedAt
string
required
The submission timestamp in ISO 8601 format (e.g., 2026-03-18T14:30:00.000Z).
Set submittedAt to the current timestamp by using new Date().toISOString() in JavaScript or datetime.utcnow().isoformat() in Python. This ensures the recorded time accurately reflects when the submission was made.

​
Response

Returns the created submission document.
​
_id
string
The MongoDB ObjectId of the newly created submission record.
​
assignmentId
string
The MongoDB ObjectId of the assignment.
​
studentId
string
The MongoDB ObjectId of the student.
​
fileUrl
string
The URL of the submitted file.
​
submittedAt
string
The submission timestamp in ISO 8601 format.
​
__v
number
Mongoose internal version key.
curl --request POST \
  --url http://localhost:5000/api/assignment/submit \
  --header 'Content-Type: application/json' \
  --data '{
    "assignmentId": "64b8f1a2c3d4e5f678905678",
    "studentId": "64b8f1a2c3d4e5f678901234",
    "fileUrl": "https://storage.example.com/submissions/essay-final.pdf",
    "submittedAt": "2026-03-18T14:30:00.000Z"
  }'

{
  "_id": "64d0b4c8e3f2a1b096785432",
  "assignmentId": "64b8f1a2c3d4e5f678905678",
  "studentId": "64b8f1a2c3d4e5f678901234",
  "fileUrl": "https://storage.example.com/submissions/essay-final.pdf",
  "submittedAt": "2026-03-18T14:30:00.000Z",
  "__v": 0
}

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