instance method `alias_attribute`

Ruby on Rails 8.0.4

Since v7.1.6

Available in: v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

alias_attribute(new_name, old_name)

Allows you to make aliases for attributes.

class Person < ActiveRecord::Base
  alias_attribute :nickname, :name
end

person = Person.create(name: 'Bob')
person.name     # => "Bob"
person.nickname # => "Bob"

The alias can also be used for querying:

Person.where(nickname: "Bob")
# SELECT "people".* FROM "people" WHERE "people"."name" = "Bob"

Parameters

new_name req
old_name req

Source

# File activerecord/lib/active_record/attribute_methods.rb, line 66
      def alias_attribute(new_name, old_name)
        super

        if @alias_attributes_mass_generated
          ActiveSupport::CodeGenerator.batch(generated_attribute_methods, __FILE__, __LINE__) do |code_generator|
            generate_alias_attribute_methods(code_generator, new_name, old_name)
          end
        end
      end

Defined in activerecord/lib/active_record/attribute_methods.rb line 66 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::AttributeMethods::ClassMethods

Signature

Parameters