Habuco

Habuco name come from HAsh BUilder with COntext.

It allows to use DSL to create hash structure with passed context.

Installation

Add this line to your application's Gemfile:

gem 'habuco'

And then execute:

$ bundle

Or install it yourself as:

$ gem install habuco

Usage

Static value

class HashBuilder
  include Habuco

  attribute :foo, :bar
end

HashBuilder.build # => { foo: :bar }

Date and Time value

class HashBuilder
  include Habuco

  attribute :date, -> { Date.new(2000) }
end

HashBuilder.build # => { date: #<Date: 2000-01-01 ((2447893j,0s,0n),+0s,2299161j)> }

Value with context

class HashBuilder
  include Habuco

  attribute :foo, -> { user_name }
end

HashBuilder.build(user_name: 'John') # => { foo: 'John' }

Namespace

class HashBuilder
  include Habuco

  namespace :foo do
    attribute :bar, :foobar
  end
end

HashBuilder.build # => { foo: { bar: :foobar } }

Dynamic key

class HashBuilder
  include Habuco

  attribute -> { :"foo_#{n}" }, :bar
end

HashBuilder.build(n: 123) # => { foo_123: :bar }

Collection

class HashBuilder
  include Habuco

  each_with_index -> { collection } do |val, index|
    attribute :"foo_#{index}", val
  end
end

HashBuilder.build(collection: %i[red green blue]) # => { foo_0: :red, foo_1: :green, foo_2: :blue }

Development

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/wafcio/habuco.

License

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