ActiveModelService

Make your active model as service object.

Standardize service calls using call method.

Add this line to your application's Gemfile:

gem 'active_model_service'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install active_model_service

Define the service class and invoke your bussiness logic by method call. Use defaults validators of activemodel. When you need raise error, use error!('error adn stop'). This erro showin at :base key errors of activemodel. When you need add multiples errors base, use error('my error message without stop'). Need raise Error after to stop You can use all behaviors of activemodel.

Example:

class LoginService < ActiveModelService::Call
    attr_init :login, :pass

    validates :login, :pass, presence: true

    def call
    error!('Login/pass invalid') if @login != @pass

    message 'successfully logged in'

    'login is valid'
    end
end

# Success
login_service = LoginService.call(login: 'admin', pass: 'admin')
login_service.valid? # => true
login_service.invalid? # => false
login_service.errors # => {}
login_service.messages # => ['successfully logged in']
login_service.result # => true

# Validation error
login_service = LoginService.call(login: 'admin', pass: nil)
login_service.valid? # => false
login_service.invalid? # => true
login_service.errors # => {pass: "Can't be blank"}
login_service.messages # => []
login_service.result # => nil

# add_error validation
login_service = LoginService.call(login: 'admin', pass: 'wrong')
login_service.valid? # => false
login_service.invalid? # => true
login_service.errors # => {base: "Login/pass invalid"}
login_service.messages # => []
login_service.result # => nil

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 the created tag, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/rvettori/active_model_service.