Flask-CORS is a simple extension to Flask allowing you to support cross origin resource sharing (CORS) using a simple decorator.

Install the extension with using pip, or easy_install.

$ pip install flask-cors

This extension 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!"

For a full list of options, please see the full documentation

A simple set of tests is included in test.py. To run, install nose, and simply invoke nosetests or run python test.py to exercise the tests.

Questions, comments or improvements? Please create an issue on Github, tweet at me or send me an email.