A small extension to the excellent jbuilder library that outputs JSONP using a specified callback.

Add this line to your application's Gemfile:

gem 'jpbuilder'

And then execute:

$ bundle

Or install it yourself as:

$ gem install jpbuilder

Install in your gem file and then just create templates with the extension .jpbuilder and use the normal Jbuilder DSL. The template will use the callback as specified in the "callback" url parameter. If none is provided then the regular JSON format will be returned.

You can set a global callback to be used in the absence of a callback listed in the params hash, by setting the JPbuilderHandler.default_callback variable in an initializer:

# config/initilizers/jpbuilder.rb
JPbuilderHandler.default_callback = "myJsCallback"

To disable the auto callback simply set JPbuilderHandler.default_callback to null or "".

# config/initilizers/jpbuilder.rb
JPbuilderHandler.default_callback = nil

Note: nil is the default value.

• Find a decent way to test.

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request