u-case - v2.6: examples of how to use the then method

01.rb

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'u-case', '~> 2.6.0'
end

class Add3 < Micro::Case
  attributes :number

  def call!
    number.is_a?(Numeric) ? Success(number: number + 3) : Failure()
  end
end

class Add1IfWasAnEvenNumber < Micro::Case
  attributes :number

  def call!
    return Success(number: number + 1) if number.is_a?(Numeric) && number.even?

    Failure()
  end
end

Add3
  .call(number: 1)
  .then(Add1IfWasAnEvenNumber)
  .on_success { |data| p data[:number] }
  .on_failure { |result| puts "the attribute number must be numeric" }

02.rb

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'u-case', '~> 2.6.0'
end

class Add3 < Micro::Case
  attributes :number

  def call!
    number.is_a?(Numeric) ? Success(number: number + 3) : Failure()
  end
end

class Add1 < Micro::Case
  attributes :number

  def call!
    number.is_a?(Numeric) ? Success(number: number + 1) : Failure()
  end
end

module AddN
  def self.call(input)
    result = Add3.call(input).on_failure { |result| return result }

    result.value[:number].even? ? result.then(Add1) : result
  end
end

AddN
  .call(number: 1)
  .on_success { |data| p data[:number] }
  .on_failure { |result| puts "the attribute number must be numeric" }

02b.rb

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'u-case', '~> 2.6.0'
end

class Add3 < Micro::Case
  attributes :number

  def call!
    number.is_a?(Numeric) ? Success(number: number + 3) : Failure()
  end
end

module AddN
  class Add1 < Micro::Case
    attributes :number

    def call!
      number.is_a?(Numeric) ? Success(number: number + 1) : Failure()
    end
  end

  def self.call(input)
    result = Add3.call(input).on_failure { |result| return result }

    result.value[:number].even? ? result.then(Add1) : result
  end
end

AddN
  .call(number: 1)
  .on_success { |data| p data[:number] }
  .on_failure { |result| puts "the attribute number must be numeric" }