flask_accept 0.0.1

Custom Accept header routing support for Flask

Flask-Accept
========

Description
-----------

Custom ``Accept`` header routing support for Flask.

Features
--------

**Respond differently based on the MIME type accepted**
Extend any given endpoint to support any additional media type.

**Use custom media types to version your API**
Never put a `/v1/` in your URI ever again.

**Dead-simple API**
Yet Another Flask Decorator

Documentation
-------------

Installation
~~~~~~~~~~~~

Installing:

::

$ pip install flask-accept

Quickstart
~~~~~~~~~~

Below is an example Flask app that only accepts the ``text/html`` media type:

.. code:: python

from flask import Flask
from flask_accept import accept
app = Flask(__name__)

@app.route('/')
@accept('text/html')
def hello_world():
return 'Hello World!'

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

When one tries to access the endpoint without a valid ``Accept`` header:

.. code:: console

$ curl localhost:5000 -I
HTTP/1.0 406 NOT ACCEPTABLE

With the valid header:

.. code:: console

$ curl localhost:5000 -I -H "Accept: text/html"
HTTP/1.0 200 OK
Content-Type: text/html; charset=utf-8

Adding Support for an Existing Endpoint
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Given our example from before, we can add support for a different response to
an additonal media type as follows:

.. code:: python

from flask import Flask, jsonify
from flask_accept import accept
app = Flask(__name__)

@app.route('/')
@accept('text/html')
def hello_world():
return 'Hello World!'

@hello_world.support('application/json')
def hello_world_json():
return jsonify(result="Hello World!")

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

Now our ``hello_world`` endpoint supports JSON:

.. code:: console

$ curl localhost:5000 -I -H "Accept: application/json"
HTTP/1.0 200 OK
Content-Type: application/json

Falling Back on a Default Endpoint
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

If we want to support a specific media type, but have every other request
fall back to a default endpoint, we can use ``accept_fallback`` as follows:

.. code:: python

from flask import Flask, jsonify
from flask_accept import accept, accept_fallback
app = Flask(__name__)

@app.route('/')
@accept_fallback
def hello_world():
return 'Hello World!'

@hello_world.support('application/json')
def hello_world_json():
return jsonify(result="Hello World!")

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

Our ``hello_world`` endpoint still supports JSON, but for any other media type
(or if none is specified) it will fall back:

.. code:: console

$ curl localhost:5000 -I
HTTP/1.0 200 OK
Content-Type: text/html

$ curl localhost:5000 -I -H "Accept: madeup/mediatype"
HTTP/1.0 200 OK
Content-Type: text/html

Use Cases
~~~~~~~~~

Versioning your API
^^^^^^^^^^^^^^^^^^^

Flask-Accept let you accept any possible media type, including `custom vendored
media types <https://en.wikipedia.org/wiki/Media_type#Vendor_tree>`__. This is
ideal for versioning an API using ``Accept`` headers only:

.. code:: python

from flask import Flask, jsonify
from flask_accept import accept
app = Flask(__name__)

@app.route('/')
@accept('application/vnd.your_vendor.v1', 'application/vnd.your_vendor.v2')
def hello_world():
return 'Hello World!'

@hello_world.support('application/vnd.your_vendor.v3')
def hello_world_v2():
return 'Goodbye cruel world.'

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

.. code:: console

$ curl localhost:5000 -H "Accept: application/vnd.your_vendor.v1"
Hello World!

$ curl localhost:5000 -H "Accept: application/vnd.your_vendor.v2"
Hello World!

$ curl localhost:5000 -H "Accept: application/vnd.your_vendor.v3"
Goodbye cruel world.

Testing
~~~~~~~

To run the tests

::

python setup.py test

Authors
-------

- `Dustin Ingram <https://github.com/di>`__

License
-------

Open source MIT license.