Anujcodecraft/notes-online

### ✅ Uploading PYQ Fails – Missing `uploader` & `branch` not ObjectId**

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#34 opened on Jul 5, 2025

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Description

🛠️ Uploading PYQ Fails – Missing uploader & branch not ObjectId

🐛 Description:

Uploading a PYQ fails due to two schema validation issues:

  1. branch expects an ObjectId, but receives a string.
  2. uploader field is missing in the payload.

💥 Error Response:

{
  "error": "Validation failed",
  "details": {
    "branch": {
      "stringValue": "\"CSE\"",
      "valueType": "string",
      "kind": "ObjectId",
      "value": "CSE",
      "path": "branch",
      "name": "CastError",
      "message": "Cast to ObjectId failed for value \"CSE\" at path \"branch\""
    },
    "uploader": {
      "name": "ValidatorError",
      "message": "Path `uploader` is required.",
      "properties": {
        "message": "Path `uploader` is required.",
        "type": "required",
        "path": "uploader"
      },
      "kind": "required",
      "path": "uploader"
    }
  }
}
✅ Expected Behavior:
PYQ should be uploaded successfully when valid data is provided.

❌ Actual Behavior:
Validation fails and returns 400 status.

Contributor guide

Research direction
Inspect the PYQ upload route handler and Mongoose model. Verify that the branch field is sent as a valid ObjectId and that the uploader field is set from the authenticated user's ID.
Tech stack
javascriptnodejsmongodb
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitJavaScriptNode.jsMongoDB
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80