Interaction
Provides a convention for modelling user interactions as use case classes. A
use case class represents and is named after something a user does with your
application SignUp, RequestResetPasswordEmail etc.
Attributes are whitelisted and coerced into an expected type using Virtus. An attribute will either be the specified type or nil.
Take a look at the code itself for full details of the API provided.
A simple example
class SignUp
include Interaction
include ActiveModel::Validations
include Interaction::ValidationHelpers
# Virtus
attribute :email, String
attribute :password, String
# ActiveModel validations
validates :email, :password, presence: true
attr_reader :user
def perform
validate!
create_user
deliver_welcome_email
end
private
def create_user
@user = User.create(attributes)
failure! unless @user.persisted?
end
def deliver_welcome_email
# ...
end
end
sign_up = SignUp.perform(username: 'john', password: 'j0hn')
sign_up.success?
# => true
sign_up.user
# => #<User id:...>