Flask-restful: Question on File Upload in Restful Flask

Created on 20 Jul 2015 · 5Comments · Source: flask-restful/flask-restful

Dear Moderator,

I am trying to learn Rest framework through Restful Flask.
My initial exercises went fine with https://flask-restful.readthedocs.org/en/0.3.3/quickstart.html

Now I want to upload file through Restful Flask. I tried to check the web for reference.
I got these urls,
(i) http://docs.python-requests.org/en/latest/user/quickstart/#post-a-multipart-encoded-file
(ii) http://stackoverflow.com/questions/28982974/flask-restful-upload-image
(iii) http://blog.luisrei.com/articles/flaskrest.html

But the question I am stuck with what are the things I have to change in the example of quickstart tutorial so that I may be able to upload file. Or if any one may kindly suggest with a small example.

If any one of the esteemed members may kindly suggest.

Regards,
Subhabrata Banerjee.

Source

SubhabrataBanerji

Most helpful comment

from flask import Flask
from flask_restful import Resource, Api, reqparse
import werkzeug, os

app = Flask(__name__)
api = Api(app)
UPLOAD_FOLDER = 'static/img'
parser = reqparse.RequestParser()
parser.add_argument('file',type=werkzeug.datastructures.FileStorage, location='files')


class HelloWorld(Resource):
    def get(self):
        return {'hello': 'world'}


class PhotoUpload(Resource):
    decorators=[]

    def post(self):
        data = parser.parse_args()
        if data['file'] == "":
            return {
                    'data':'',
                    'message':'No file found',
                    'status':'error'
                    }
        photo = data['file']

        if photo:
            filename = 'your_image.png'
            photo.save(os.path.join(UPLOAD_FOLDER,filename))
            return {
                    'data':'',
                    'message':'photo uploaded',
                    'status':'success'
                    }
        return {
                'data':'',
                'message':'Something when wrong',
                'status':'error'
                }


api.add_resource(HelloWorld, '/')
api.add_resource(PhotoUpload,'/upload')

if __name__ == '__main__':
    app.run(debug=True)

Make sure that the [UPLOAD_FOLDER] was created or it will throw an error

Michael-Jalloh on 16 Mar 2018

👍31 😄3 👀2 🚀2 🎉2

All 5 comments

Hello,
I've the same concern as Subhabrata ; I just want to upload a file by using Flask-Rest... any example?

regards

xmehaut on 21 Aug 2015

Please check the docs.

joshfriend on 21 Aug 2015

@joshfriend The link is restricted to visit.

nabinkhadka on 6 Feb 2018

from flask import Flask
from flask_restful import Resource, Api, reqparse
import werkzeug, os

app = Flask(__name__)
api = Api(app)
UPLOAD_FOLDER = 'static/img'
parser = reqparse.RequestParser()
parser.add_argument('file',type=werkzeug.datastructures.FileStorage, location='files')


class HelloWorld(Resource):
    def get(self):
        return {'hello': 'world'}


class PhotoUpload(Resource):
    decorators=[]

    def post(self):
        data = parser.parse_args()
        if data['file'] == "":
            return {
                    'data':'',
                    'message':'No file found',
                    'status':'error'
                    }
        photo = data['file']

        if photo:
            filename = 'your_image.png'
            photo.save(os.path.join(UPLOAD_FOLDER,filename))
            return {
                    'data':'',
                    'message':'photo uploaded',
                    'status':'success'
                    }
        return {
                'data':'',
                'message':'Something when wrong',
                'status':'error'
                }


api.add_resource(HelloWorld, '/')
api.add_resource(PhotoUpload,'/upload')

if __name__ == '__main__':
    app.run(debug=True)

Make sure that the [UPLOAD_FOLDER] was created or it will throw an error

Michael-Jalloh on 16 Mar 2018

👍31 😄3 👀2 🚀2 🎉2

Adding a sample curl client use case that works: curl -X POST -F file=@'/tmp/sweetmp.png' http://192.168.3.50:5000/upload