module ActiveModel # == Active Model Basic Model # # Includes the required interface for an object to interact with # ActionPack, using different ActiveModel modules. # It includes model name introspections, conversions, translations and # validations. Besides that, it allows you to initialize the object with a # hash of attributes, pretty much like ActiveRecord does. # # A minimal implementation could be: # # class Person # include ActiveModel::Model # attr_accessor :name, :age # end # # person = Person.new(name: 'bob', age: '18') # person.name # => 'bob' # person.age # => 18 # # Note that, by default, ActiveModel::Model implements persisted? # to return +false+, which is the most common case. You may want to override # it in your class to simulate a different scenario: # # class Person # include ActiveModel::Model # attr_accessor :id, :name # # def persisted? # self.id == 1 # end # end # # person = Person.new(id: 1, name: 'bob') # person.persisted? # => true # # Also, if for some reason you need to run code on initialize, make # sure you call +super+ if you want the attributes hash initialization to # happen. # # class Person # include ActiveModel::Model # attr_accessor :id, :name, :omg # # def initialize(attributes={}) # super # @omg ||= true # end # end # # person = Person.new(id: 1, name: 'bob') # person.omg # => true # # For more detailed information on other functionalities available, please # refer to the specific modules included in ActiveModel::Model # (see below). module Model def self.included(base) #:nodoc: base.class_eval do extend ActiveModel::Naming extend ActiveModel::Translation include ActiveModel::Validations include ActiveModel::Conversion end end # Initializes a new model with the given +params+. # # class Person # include ActiveModel::Model # attr_accessor :name, :age # end # # person = Person.new(name: 'bob', age: '18') # person.name # => "bob" # person.age # => 18 def initialize(params={}) params.each do |attr, value| self.public_send("#{attr}=", value) end if params end # Indicates if the model is persisted. Default is +false+. # # class Person # include ActiveModel::Model # attr_accessor :id, :name # end # # person = Person.new(id: 1, name: 'bob') # person.persisted? # => false def persisted? false end end end