GET /something HTTP/1.1
The primary impetus for doing this is to be able to use vendor mime types in the HTTP Accept header for REST API versioning as well as for content negotiation. The GitHub API’s usage of Media Types is an excellent example of this.
Add this line to your application’s Gemfile:
And then execute:
Or install it yourself as:
$ gem install rack-vendor_accept_header
Given that this is rack middleware, it can be used with pure rack applications, or with the vast number of web frameworks that are built on top of rack. This includes Ruby on Rails, Sinatra, Grape, etc. Details on using rack middleware within each of these framework can be found within their respective documentation. However, the following is a quick example of how you would register this rack middleware in Sinatra.
When you use this middleware it parses and exposes the
version out of the vendor based mime type HTTP Accept
GET /something HTTP/1.1
Given the example above this middleware would expose these components in the rack env as follows:
request.env['vnd_type'] # => 'application'
request.env['vnd_sub_type'] # => 'json'
request.env['vnd_version'] # => '3'
request.env['vnd_context'] # => 'acme'
If you are interested in any of the references around this use case and the details around it. Please see the following.
- GitHub API Media Types
- rfc2616 sec14 - Header Field Definitions
- rfc4288 sec3.2 - Media Type Specifications and Registration Procedures
- Using the Accept Header to version your API
- Pivotal Labs - API Versioning
- Nobody Understands REST or HTTP
- MIMETYPES (AND APIS)
- Versioning REST Web Services
After checking out the repo, run
bin/setup to install dependencies.
rake spec to run the tests. You can also run
for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run
bundle exec rake
install. To release a new version, update the version number in
version.rb, and then run
bundle exec rake release, which will create
a git tag for the version, push git commits and tags, and push the
.gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/codebreakdown/rack-vendor_accept_header. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.
The gem is available as open source under the terms of the MIT License.