Whenever you use MongoDB and Mongoid, there's a high chance you will end up preparing your urls with a slug instead of the traditional ids because MongoDB ids are ugly.
This gem will help you generate slugs in an easy way
So far it works with the Rails 3 version of Mongoid.
If you're using mongoid 2.0.0.rc.7 or less, you need to use version 0.0.5
When mongoid 2.0.0.rc.8 was released there was a change that prevented backwards compatibility.
Include it in your Gemfile:
gem 'slugoid'
And run bundler
bundle install
To use it, all you have to do is call acts_as_slugoid in your Mongoid::Document
class Project
include Mongoid::Document
acts_as_slugoid
end
By default, this will declare a field on the Document called :slug and will try to generate the slug from a field called :name.
If you want to change the field to generate the slug you can use the :generate_from option:
class Organization
include Mongoid::Document
field :alternative_name
acts_as_slugoid :generate_from => :alternative_name
end
This will generate the slug form a field called :alternative_name.
If you want to change the field where the slug is stored you can use the :store_as option:
class Organization
include Mongoid::Document
field :name
acts_as_slugoid :store_as => :alternative_slug
end
Now it will store the slug in a field called :alternative_slug. If the specified field is not defined on the Document it will be automatically declared, so adding:
field :alternative_slug
is optional.
To make things transparent and easy, by default, the find method of the acts_as_slugoid Documents will look for the object by the slug, not the id.
So, if you had the Project class configured as the example above:
@project = Project.create(:name => "Name")
Project.find(@project.to_param) #=> @project
If, for any reason, you have to look for the object using its id, you have to be explicit:
@project = Project.create(:name => "Name")
Project.find(:first, :conditions => {:_id => @project.id}) #=> @project
Project.where(:_id => @project.id) #=> @project
The find behavior for the other Mongoid::Documents remains the same.
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