Value Object pattern realized in scope of Ruby.
attribute
andproperty
semantics;- primitive immutability based on
#freeze
invocation; - read-only instance attributes and properties;
- support for hash representation (other formats coming soon);
- support for:
- semantic comparability (
Comparable
,#<=>
,#eql?
) (based on object's type and object's attributes and parameters); - semantic enumerability (
Enumerable
,#each
) (enumerates itself by default); - (
soon
)#clone
and#dup
;
- semantic comparability (
gem 'smart_value-object'
bundle install
# --- or ---
gem install smart_value-object
require 'smart_core/value-object'
class Address < SmartCore::ValueObject
attribute :country, 'value.string' # an alias of SmartCore::Types::Value::String (see smart_initializer gem)
attribute :city, 'value.string'
property :location, 'value.string'
property :capital, SmartCore::Types::Value::Boolean
end
khabarovsk = Address.new('Russia', 'Khabaovsk', location: '48.4814/135.0721', capital: false)
same_city = Address.new('Russia', 'Khabaovsk', location: '48.4814/135.0721', capital: false)
another_city = Address.new('Russia', 'Moscow', location: '59.9311/30.3609', capital: false)
khabarovsk.frozen? # => true
khabarovsk.country # => 'Russia'
khabarovsk.city # => 'Khabarovsk'
khabarovsk.location # => '48.4814/135.0721'
khabarovsk.capital # => false
khabarovsk.to_h # or #as_hash or #to_hash
# => returns:
{ city: 'Russia', country: 'Khabaovsk', location: '48.4814/135.0721', capital: false }
# comparability:
khabarovsk == same_city # => true
khabarovsk == another_city # => false
# default Enumerable behavior:
khabarovsk.to_a # => [khabarovsk]
khabarovsk.each { |entity| puts entity } # => outputs itself
- Migrate to
GitHub Actions
;
- run tests:
bundle exec rspec
- run code style checks:
bundle exec rubocop
- run code style checks with auto-correction:
bundle exec rubocop -A
- Fork it ( https://github.com/smart-rb/smart_value-object )
- Create your feature branch (
git checkout -b feature/my-new-feature
) - Commit your changes (
git commit -am '[feature_context] Add some feature'
) - Push to the branch (
git push origin feature/my-new-feature
) - Create new Pull Request
Released under MIT License.