Active Model Basic Model¶↑

Allows implementing models similar toActiveRecord::Base. IncludesActiveModel::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:

classPersonincludeActiveModel::Modelattr_accessor:name,:ageendperson =Person.new(name:'bob',age:'18')person.name# => "bob"person.age# => "18"

If for some reason you need to run code oninitialize, make sure you callsuper if you want the attributes hash initialization to happen.

classPersonincludeActiveModel::Modelattr_accessor:id,:name,:omgdefinitialize(attributes={})super@omg||=trueendendperson =Person.new(id:1,name:'bob')person.omg# => true

For more detailed information on other functionalities available, please refer to the specific modules included inActiveModel::Model (see below).

slice(*methods)Link

person =Person.new(id:1,name:"bob")person.slice(:id,:name)# => { "id" => 1, "name" => "bob" }

# File activemodel/lib/active_model/model.rb, line 48

values_at(*methods)Link

person =Person.new(id:1,name:"bob")person.values_at(:id,:name)# => [1, "bob"]

# File activemodel/lib/active_model/model.rb, line 63