Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
548 views
in Technique[技术] by (71.8m points)

python - Flask RESTful cross-domain issue with Angular: PUT, OPTIONS methods

I've developed a small write-only REST api with Flask Restful that accepts PUT request from a handful of clients that can potentially have changing IP addresses. My clients are embedded Chromium clients running an AngularJS front-end; they authenticate with my API with a simple magic key -- it's sufficient for my very limited scale.

I'm testing deploying my API now and I notice that the Angular clients are attempting to send an OPTIONS http methods to my Flask service. My API meanwhile is replying with a 404 (since I didn't write an OPTIONS handler yet, only a PUT handler). It seems that when sending cross-domain requests that are not POST or GET, Angular will send a pre-flight OPTIONS method at the server to make sure the cross-domain request is accepted before it sends the actual request. Is that right?

Anyway, how do I allow all cross-domain PUT requests to Flask Restful API? I've used cross-domaion decorators with a (non-restful) Flask instance before, but do I need to write an OPTIONS handler as well into my API?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

With the Flask-CORS module, you can do cross-domain requests without changing your code.

from flask.ext.cors import CORS

app = Flask(__name__)
cors = CORS(app, resources={r"/api/*": {"origins": "*"}})

Update

As Eric suggested, the flask.ext.cors module is now deprecated, you should rather use the following code:

from flask_cors import CORS

app = Flask(__name__)
cors = CORS(app, resources={r"/api/*": {"origins": "*"}})

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...