ref: master
db/migrate/005_acts_as_taggable_migration.rb
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class ActsAsTaggableMigration < ActiveRecord::Migration def self.up create_table :tags do |t| t.column :name, :string t.column :parent_id, :integer t.column :pending, :boolean, :default => false end create_table :taggings do |t| t.column :tag_id, :integer t.column :taggable_id, :integer # You should make sure that the column created is # long enough to store the required class names. t.column :taggable_type, :string t.column :created_at, :datetime end add_index :taggings, :tag_id add_index :taggings, [:taggable_id, :taggable_type] end def self.down drop_table :taggings drop_table :tags end end |