A Flask extension adding a decorator for CORS support
Project description
A Flask extension for handling Cross Origin Resource Sharing (CORS), making cross-origin AJAX possible.
Installation
Install the extension with using pip, or easy_install.
$ pip install -U flask-corsUsage
This extension enables CORS support either via a decorator, or a Flask extension. There are three examples shown in the examples directory, showing the major use cases. The suggested configuration is the simple_example.py, or the app_example.py. A full list of options can be found in the documentation
Simple Usage
In the simplest case, initialize the Flask-Cors extension with default arguments in order to allow CORS on all routes.
app = Flask(__name__)
cors = CORS(app)
@app.route("/")
def helloWorld():
return "Hello, cross-origin-world!"Resource specific CORS
Alternatively, a list of resources and associated settings for CORS can be supplied, selectively enables CORS support on a set of paths on your app.
Note: this resources parameter can also be set in your application’s config.
app = Flask(__name__)
cors = CORS(app, resources={r"/api/*": {"origins": "*"}})
@app.route("/api/v1/users")
def list_users():
return "user example"Route specific CORS via decorator
This extension also exposes a simple decorator to decorate flask routes with. Simply add @cross_origin() below a call to Flask’s @app.route(..) incanation to accept the default options and allow CORS on a given route.
@app.route("/")
@cross_origin() # allow all origins all methods.
def helloWorld():
return "Hello, cross-origin-world!"Logging
Flask-Cors uses standard Python logging, using the logger name ‘app.logger_name.cors’. The app’s logger name attribute is usually the same as the name of the app. You can read more about logging from Flask’s documentation.
import logging
# make your awesome app
logging.basicConfig(level=logging.INFO)Documentation
For a full list of options, please see the full documentation
Tests
A simple set of tests is included in test/. To run, install nose, and simply invoke nosetests or python setup.py test to exercise the tests.
Contributing
Questions, comments or improvements? Please create an issue on Github, tweet at @corydolphin or send me an email.
Credits
This Flask extension is based upon the Decorator for the HTTP Access Control written by Armin Ronacher.
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
