method

alias_attribute

Ruby on Rails latest stable (v2.3.4) - 1 note - Class: Module

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What's this?

Method deprecated

This method is deprecated on the latest stable version of Rails. The last existing version (v2.1.0) is shown here.

alias_attribute(new_name, old_name) public

Allows you to make aliases for attributes, which includes getter, setter, and query methods.

Example:

  class Content < ActiveRecord::Base
    # has a title attribute
  end

  class Email < Content
    alias_attribute :subject, :title
  end

  e = Email.find(1)
  e.title    # => "Superstars"
  e.subject  # => "Superstars"
  e.subject? # => true
  e.subject = "Megastars"
  e.title    # => "Megastars"

Show source

# File activesupport/lib/active_support/core_ext/module/aliasing.rb, line 63
  def alias_attribute(new_name, old_name)
    module_eval "def \#{new_name}; self.\#{old_name}; end\ndef \#{new_name}?; self.\#{old_name}?; end\ndef \#{new_name}=(v); self.\#{old_name} = v; end\n", __FILE__, __LINE__+1
  end

March 27, 2009

1 thank

Deprecated - replacement method

The description rightly lists this as deprecated, but using it will still work atm, as it seems to have moved to ActiveSupport::CoreExtensions::Module instead.

So your code should still work.

alias_attribute

Related methods

Method deprecated

Deprecated - replacement method