Parametron

This simple library implements DSL for validating method input parameters

Installation

Add this line to your application's Gemfile:

gem 'parametron'

And then execute:

$ bundle

Or install it yourself as:

$ gem install parametron

Usage

    class VictimStrict
        include Parametron

        params_for(:fetch, strict: true) do
          required :city,   validator: /\w+/
          required :year,   validator: /\d{4}/
          optional :title,  validator: ->(str){ str != "Moscow" }
          optional :number, validator: /\d+/, default: 42
          optional :gears,  default: ->(obj){ choose_by(obj) }
          optional :weel_d, as: :weel_diameter
        end

        def fetch params
          # .. do something useful
        end
      end

See spec/parametron_spec how this library suppossed to work. All hackers do this and you should too!

Contributing

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