===== Summary

Rack middleware to specify an app's supported media types.
Returns '406 Not Acceptable' status when unsuported type is requested.

===== Install

  gem install rack-supported-media-types

===== Example

  require 'rack'
  require 'rack/supported_media_types'

  use Rack::SupportedMediaTypes, %w( application/xml application/json )
  run App.new

  # will give you:

  GET /foo
  Accept: text/html,text/plain
  #=> 406 Not Acceptable

  GET /foo
  Accept: application/xml,text/html
  #=> 200 OK

  GET /foo
  Accept: application/json,text/html
  #=> 200 OK

see examples/simple.ru for example code.

===== Tip

To read the requested type from the url's extension instead of the Accept
header (which is a more realistic use case), use Rack::AbstractFormat before
Rack::SupportedMediaTypes.

  # gem install rack-abstract-format

  require 'rack'
  require 'rack/abstract_format'
  require 'rack/supported_media_types'

  use Rack::AbstractFormat
  use Rack::SupportedMediaTypes, %w( application/xml application/json )
  run App.new

  # will result in:

  GET /foo.html
  #=> 406 Not Acceptable

  GET /foo.xml
  #=> 200 OK

  GET /foo.json
  #=> 200 OK

see examples/recommended.ru for example code.

===== Links

code:: http://github.com/mynyml/rack-supported-media-types
docs:: http://docs.github.com/mynyml/rack-supported-media-types