Rack::ParamsKeyConverter

This is a rack middleware that convert params key between JavaScript app and Rails app.

For example, your JavaScript app posts below JSON (camelized key),

{ "userName": "Jotaro Kujo",
  "createdAt": "1989-03-18T09:45:00.000Z"
}

And your rails app can receive params as underscored key

puts params[:user_name] # "Jotaro Kujo"
puts params[:created_at] # "1989-03-18T09:45:00.000Z"

Your rails app's response as below (underscored key),

{ "user_name": "Noriaki Kakyoin",
  "created_at": "1989-03-18T09:45:00.000Z"
}

And JavaScript app can receive as camelized key.

{ "userName": "Noriaki Kakyoin",
  "createdAt": "1989-03-18T09:45:00.000Z"
}

Installation

Add this line to your application's Gemfile:

gem 'rack-params_key_converter'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rack-params_key_converter

Add below to your rails app's config/initializers

Rails.configuration.middleware.insert_after(ActionDispatch::ParamsParser, Rack::ParamsKeyConverter)

Fork it ( https://github.com/[my-github-username]/rack-params_key_converter/fork )
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create a new Pull Request

MIT