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Add Git SHA headers to your Rails 3 application

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Octocat-spinner-32 lib
Octocat-spinner-32 spec
Octocat-spinner-32 .gitignore
Octocat-spinner-32 .rspec
Octocat-spinner-32 .travis.yml
Octocat-spinner-32 CHANGELOG.md
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Octocat-spinner-32 README.md
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Octocat-spinner-32 sha_header.gemspec
README.md

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SHAHeader

SHAHeader is a simple Rack middleware gem for Rails 3. When required, it will instruct Rails to automatically insert its middleware into the Rack stack and inject your current git SHA hash into all of your dynamic response headers.

Compatibility

The SHAHeader gem is Ruby 1.8.7, 1.9.2, 1.9.3, and 2.0.0 compatible and it is compatible with Rails 3.x.

Installation

In Rails 3, modify your Gemfile to add the following line:

gem 'sha_header'

That's it. It is distributed with a Railtie to instruct Rails on how to set it up, so no other coding is required.

Example

Here's a simple example for a Rails application running locally. The application has added the above Gemfile line. Using curl:

curl -I http://localhost:3000/

And, the following response is received:

HTTP/1.1 200 OK 
Content-Type: text/html; charset=utf-8
ETag: "25ec427afba8daa376f309559b1b3c5c"
Cache-Control: max-age=0, private, must-revalidate
X-Git-SHA: 8c139c519c731be597d0c37a6e5ce46a27bab174
X-UA-Compatible: IE=Edge
X-Runtime: 0.120340
Content-Length: 0
Connection: Keep-Alive

(Notice the X-Git-SHA header)

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