This gem allows you to easily create slugs for your ActiveRecord models.
sudo gem install sluggable -s http://gemcutter.org
In `config/environment.rb`, add the following:
config.gem 'sluggable', :source => 'http://gemcutter.org'
Then, in your ActiveRecord model you just need to include the module and provide the column to use when generating the slug. For example, if we had a Post model with:
class Blog < ActiveRecord::Base # Columns: # name: string # slug: string include Sluggable slug_from :name before_validation :generate_slug end
This sets it up so that the value of the `name` column is used as the source when generating the slug. The module also provides a private method (`generate_slug`) to generate and store the slug for this record. It requires that the table have a column called `slug` and is typically called in a lifecycle hook, though it can be called from anywhere you need it.
If you have a model that allows the same slug when scoped to another associated model, you can provide a parameter as part of the `slug_from` method:
class Post < ActiveRecord::Base # Columns: # blog_id: integer # title: string # body: text # slug: string belongs_to :blog include Sluggable slug_from :title, :scope => :blog_id before_validation :generate_slug end
This will allow the same slug to be generated for 2 posts each scoped to a different blog.
Copyright © 2009 Patrick Reagan (firstname.lastname@example.org)
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