FriendlyId is the “Swiss Army bulldozer” of slugging and permalink plugins for ActiveRecord. It allows you to create pretty URL’s and work with human-friendly strings as if they were numeric ids for ActiveRecord models.
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FriendlyId is the "Swiss Army bulldozer" of slugging and permalink plugins for Ruby on Rails. It allows you to create pretty URL's and work with human-friendly strings as if they were numeric ids for Active Record models.

Using FriendlyId, it's easy to make your application use URL's like:

instead of:

FriendlyId Features

FriendlyId offers many advanced features, including: slug history and versioning, scoped slugs, reserved words, custom slug generators, and excellent Unicode support. For complete information on using FriendlyId, please see the FriendlyId Guide.

FriendlyId is compatible with Active Record 2.3.x and 3.0.

Docs, Info and Support

Rails Quickstart

Note that the example below uses Rails 3. But don't worry: FriendlyId will continue to support 2.3.x until Rails 3.1 is released.

gem install friendly_id

rails new my_app

cd my_app

# add to Gemfile
gem "friendly_id", "~> 3.1"

rails generate friendly_id
rails generate scaffold user name:string cached_slug:string

rake db:migrate

# edit app/models/user.rb
class User < ActiveRecord::Base
  has_friendly_id :name, :use_slug => true

User.create! :name => "Joe Schmoe"

rails server


Sequel and DataMapper, too

Alex Coles maintains an implemntation of FriendlyId for DataMapper that supports almost all the features of the Active Record version.

Norman Clarke maintains an implementation of FriendlyId forSequel with some of the features of the Active Record version.


Please report them on the Github issue tracker for this project.

If you have a bug to report, please include the following information:

  • Version information for FriendlyId, Rails and Ruby.
  • Stack trace and error message.
  • Any snippets of relevant model, view or controller code that shows how your are using FriendlyId.

If you are able to, it helps even more if you can fork FriendlyId on Github, and add a test that reproduces the error you are experiencing.


FriendlyId was created by Norman Clarke, Adrian Mugnolo, and Emilio Tagua.

If you like FriendlyId, please recommend us on Working With Rails:


Copyright (c) 2008-2010, released under the MIT license.