Hashid Rails

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This gem allows you to easily use Hashids in your Rails app. Instead of your models using sequential numbers like 1, 2, 3, they will instead have unique short hashes like "yLA6m0oM", "5bAyD0LO", and "wz3MZ49l". The database will still use integers under the hood, so this gem can be added or removed at any time.

Installation

Add this line to your application's Gemfile:

gem 'hashid-rails'

And then execute:

$ bundle

Or install it yourself as:

$ gem install hashid-rails

Note: This gem is not yet compatible with Rails 5.

Basic Usage

Just use Model#find passing in the hashid instead of the model id.

@person = Person.find(params[:hashid])

Alternative Usage

You can use the Model#find_by_hashid method to find a record without falling back on the standard find method. This can be useful in cases where the hashid might be misinterpreted by the find method, such as using a hashid containing only numbers that could be both interpreted as either an id and or a hashid.

# When a record is found, it returns the record.
@person = Person.find_by_hashid(params[:hashid])

# When no record, is found it raises an exception.
ActiveRecord::RecordNotFound

Configuration

To customize the Hashids seed and ensure that another user of the gem cannot easily reverse engineer your ids, create an initializer and:

Hashid::Rails.configure do |config|
  config.secret = 'my secret'
  config.length = 6
  # config.alphabet is optional, hashids provides a default
  # alphabet that consists of all characters [a-zA-Z0-9]
  config.alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
end

Development

After checking out the repo, run bin/setup to install dependencies. Then, run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release to create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

  1. Fork it ( https://github.com/[my-github-username]/hashid-rails/fork )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request