alias_attribute

alias_attribute(new_name, old_name)

Instance Public methods

Allows you to make aliases for attributes.

class Person
  include ActiveModel::AttributeMethods
 
  attr_accessor :name
  attribute_method_suffix '_short?'
  define_attribute_methods :name
 
  alias_attribute :nickname, :name
 
  private
 
  def attribute_short?(attr)
    send(attr).length < 5
  end
end
 
person = Person.new
person.name = 'Bob'
person.name            # => "Bob"
person.nickname        # => "Bob"
person.name_short?     # => true
person.nickname_short? # => true

Links:

https://github.com/rails/rails/blob/a6da73f975892635e6a0bcbfe8eb8410fcbb07a4/activemodel/lib/active_model/attribute_methods.rb#L208

doc_ruby_on_rails

2025-01-10 15:47:30

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