instance method
alias_attribute
Ruby on Rails 6.1.7.10
Since v3.0.20Signature
alias_attribute(new_name, old_name)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
Parameters
-
new_namereq -
old_namereq
Source
# File activemodel/lib/active_model/attribute_methods.rb, line 208
def alias_attribute(new_name, old_name)
self.attribute_aliases = attribute_aliases.merge(new_name.to_s => old_name.to_s)
CodeGenerator.batch(self, __FILE__, __LINE__) do |owner|
attribute_method_matchers.each do |matcher|
matcher_new = matcher.method_name(new_name).to_s
matcher_old = matcher.method_name(old_name).to_s
define_proxy_call false, owner, matcher_new, matcher_old
end
end
end
Defined in activemodel/lib/active_model/attribute_methods.rb line 208
· View on GitHub
· Improve this page
· Find usages on GitHub
Defined in ActiveModel::AttributeMethods::ClassMethods