Styjun

I need to upload a a user submitted photo to an s3 bucket. However I keep getting the following error:

TypeError: expected str, bytes or os.PathLike object, not FileStorage

How am I able to store the file as string/bytes instead of FileStorage? The relevent code is as follows:

@user_api.route('upload-profile-photo', methods=['PUT'])
@Auth.auth_required
def upload_profile_photo():
 """
 Upload User Profile Photo
 """
 key = Auth.auth_user()
 bucket = 'profile-photos'
 content_type = request.mimetype
 image_file = request.files['file']
 client = boto3.client('s3',
 region_name='sfo2',
 endpoint_url='https://example.xxx.amazonaws.com',
 aws_access_key_id=os.environ['ACCESS_KEY'],
 aws_secret_access_key=os.environ['SECRET_KEY'])
 with open(image_file, "rb") as f:
 client.upload_fileobj(
 bucket,
 f,
 key,
 ExtraArgs='ACL': 'public-read', 'ContentType': content_type
 )

 return custom_response('message': 'image uploaded', 200)

iTo achieve that with a FileStorage, I use the method put_object():

from werkzeug import secure_filename

@user_api.route('upload-profile-photo', methods=['PUT'])
@Auth.auth_required
def upload_profile_photo():
 """
 Upload User Profile Photo
 """
 key = Auth.auth_user()
 bucket = 'profile-photos'
 content_type = request.mimetype
 image_file = request.files['file']

 client = boto3.client('s3',
 region_name='sfo2',
 endpoint_url='https://example.xxx.amazonaws.com',
 aws_access_key_id=os.environ['ACCESS_KEY'],
 aws_secret_access_key=os.environ['SECRET_KEY'])

 filename = secure_filename(file.filename) # This is convenient to validate your filename, otherwise just use file.filename

 client.put_object(Body=image_file,
 Bucket=bucket,
 Key=filename,
 ContentType=content_type)

 return custom_response('message': 'image uploaded', 200)

Note the call to secure_filename() is optional (you can simply pass image_file.filename), but can be very handy to validate the filename.
Otherwise it would be nice to add some exception handlings, but the rough idea is here: no need to open() the file (that would need to be stored locally).

I encourage to have a look at the documentation here, to understand the difference with upload_fileobj()