module ActiveModel::Model
Active Model Basic Model
Allows implementing models similar to ActiveRecord::Base. Includes ActiveModel::API for the required interface for an object to interact with Action Pack and Action View, but can be extended with other functionalities.
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"
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).
Inherits From
-
module
ActiveModel::API
Public instance methods
slice(*methods)
Returns a hash of the given methods with their names as keys and returned values as values.
person = Person.new(id: 1, name: "bob")
person.slice(:id, :name)
=> { "id" => 1, "name" => "bob" }
values_at(*methods)
Returns an array of the values returned by the given methods.
person = Person.new(id: 1, name: "bob")
person.values_at(:id, :name)
=> [1, "bob"]