Acts as taggable installed

app/models/blog_post.rb

@@ -1,3 +1,5 @@
+require 'acts-as-taggable-on'
+
 class BlogPost < ActiveRecord::Base
   
   default_scope :order => 'published_at DESC'
@@ -6,6 +8,7 @@ class BlogPost < ActiveRecord::Base
   belongs_to :author, :class_name => 'User', :foreign_key => :user_id
   
   has_many :comments, :class_name => 'BlogComment', :dependent => :destroy
+  acts_as_taggable
   
   has_many :categorizations
   has_many :categories, :through => :categorizations, :source => :blog_category

db/migrate/3_acts_as_taggable_on_migration.rb

@@ -0,0 +1,28 @@
+class ActsAsTaggableOnMigration < ActiveRecord::Migration
+  def self.up
+    create_table :tags do |t|
+      t.string :name
+    end
+
+    create_table :taggings do |t|
+      t.references :tag
+
+      # You should make sure that the column created is
+      # long enough to store the required class names.
+      t.references :taggable, :polymorphic => true
+      t.references :tagger, :polymorphic => true
+
+      t.string :context
+
+      t.datetime :created_at
+    end
+
+    add_index :taggings, :tag_id
+    add_index :taggings, [:taggable_id, :taggable_type, :context]
+  end
+
+  def self.down
+    drop_table :taggings
+    drop_table :tags
+  end
+end

refinerycms-blog.gemspec

@@ -11,6 +11,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency    'refinerycms',  '>= 0.9.8'
   s.add_dependency    'filters_spam', '~> 0.2'
+  s.add_dependency    'acts-as-taggable-on', '~> 2.0.6'
 
   s.files             = %w(
     app

spec/models/blog_posts_spec.rb

@@ -47,6 +47,12 @@ describe BlogPost do
     end
   end
   
+  describe "tags" do
+    it "acts as taggable" do
+      Factory(:post).should respond_to(:tag_list)
+    end
+  end
+  
   describe "authors" do
     it "are authored" do
       BlogPost.instance_methods.map(&:to_sym).include? :author