Flatten

A Ruby Gem to Flatten Nested JSON

Installation

Add this line to your application's Gemfile:

gem 'flatten'

And then execute:

$ bundle

Or install it yourself as:

$ gem install flatten

Usage

Given a nested hash or a nested json string, run the smash method on it and get a flattened json string.

Loading development environment (Rails 4.2.5)

irb(main):037:0> ap my_house
{
    "property" => {
        "dunwoody-home" => {
            "dh-description" => "my house in dunwoody",
                   "address" => {
                "dh-street" => "5252 vernon lake drive",
                  "dh-city" => "atlanta",
                 "dh-state" => "GA"
            }
        }
    },
        "name" => "lex"
}

irb(main):038:0> ap my_house.smash
{
    "dh-description" => "my house in dunwoody",
         "dh-street" => "5252 vernon lake drive",
           "dh-city" => "atlanta",
          "dh-state" => "GA",
              "name" => "lex"
}

Assumptions

This assumes that every key is unique.

Something like this is not supported: {"name":"lex", "property": {"name":"house"}}

Notes

I used the awesome_print gem in the example: https://github.com/awesome-print/awesome_print

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console 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.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/l3x/flatten.

License

The gem is available as open source under the terms of the MIT License.