class CreateComments < ActiveRecord::Migration
  def self.up
    create_table :comments do |t|
      t.integer :commenter_id
      t.integer :commentable_id
      t.string  :commentable_type, :default => "", :null => false
      t.text    :body
 
      t.timestamps
    end
    add_index :comments, :commenter_id
    add_index :comments, [:commentable_id, :commentable_type]
  end
 
  def self.down
    drop_table :comments
  end
end