Django/DRF File Uploading to S3

index.js

const notifyDjango = (url) => {
  // Record the URL of the file you've uploaded along with any data
  // that is relevent to you.
}


const uploadToS3 = (file, url) => {
   // Upload the file here
  // See https://git.io/fhIz5 as a great example of handling all S3 upload edge cases.
}

const getSignedUrl = (file) => {
  const params = {
    objectName: file.name,
    contentType: file.type
  };

  client.get('/s3/signed-url/', { params })
  .then(data => {
    uploadToS3(file, data).then(i => {
      // if success, record the new URL
      notifyDjango(data)
    })
  })
  .catch(error => {
    console.error(error);
  });
}

views.py

from botocore.exceptions import ParamValidationError
from django.http import JsonResponse


def get_signed_url(request, *args, **kwargs):
    object_name = request.GET.get('objectName')
    content_type = request.GET.get('contentType')
    try:
        url = conn.generate_presigned_url(
            ClientMethod='put_object',
            Params={
                'Bucket': settings.S3_UPLOAD_BUCKET,
                'Key': object_name,
                'ContentType': content_type,
                'ACL': 'public-read',
            },
            ExpiresIn=3600
        )
        return JsonResponse({'signedUrl': url})
    except ParamValidationError:
        return JsonResponse({'error': 'Invalid Input'}, status=400)