Sinatra validation autowiring

Services.rb

module Helpers
      # Only a few dragons here. This method validates body of the request
      # against a schema. If no schema was passed to the method, it will
      # try to find it automagically
      def validate!(schema = nil)
        schema ||= Kernel.const_get(
          settings.validation[:module]
        ).const_get(
          /^\/(.*)\//.match(request.path)[1].capitalize
        ).const_get(
          request.env['REQUEST_METHOD'].downcase.capitalize
        )
        res = Kwalify::Validator.new(schema).validate(request.body)
        res.map! { |error|
          error.to_s
        }
        error(1012, nil, res) unless res == []
      end
    end