Salestation

Installation

Add this line to your application's Gemfile:

gem 'salestation'

And then execute:

$ bundle

Usage

Using Salestation with Sinatra

First include Salestation::Web. This will provide a method called process to execute a request and Responses module for return codes.

class Webapp < Sinatra::Base
  include Salestation::Web.new
end

Create Salestation application:

  def app
    @_app ||= Salestation::App.new(env: ENVIRONMENT)
  end

Define a route

post '/hello/:name' do
  process(
    HelloUser.call(app.create_request(
      name: params['name']
    )).map(Responses.to_ok)
  )
end

Define chain

class HelloUser
  def self.call(request)
    request >> upcase >> format
  end

  def self.upcase
    -> (request) do
      input.with_input(name: input.fetch(:name).upcase)
    end
  end

  def self.format
    -> (request) do
      name = request.input.fetch(:name)
      Deterministic::Result::Success(message: "Hello #{name}")
    end
  end
end

Using custom errors in error mapper

Salestation allows and recommends you to define your own custom errors. This is useful when your app has error classes that are not general enough for the salestation library.

  include Salestation::Web.new(errors: {
    CustomError => -> (error) { CustomResponse.new(error) }
  })

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/[USERNAME]/salestation.

License

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