Class: ActsAsTaggableOnMigration

Inherits:
ActiveRecord::Migration
  • Object
show all
Defined in:
lib/db/migrate/20090809204840_acts_as_taggable_on_migration.rb

Class Method Summary collapse

Class Method Details

.down ⇒ Object 



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# File 'lib/db/migrate/20090809204840_acts_as_taggable_on_migration.rb', line 25

def self.down
  drop_table :taggings
  drop_table :tags
end

.up ⇒ Object 



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# File 'lib/db/migrate/20090809204840_acts_as_taggable_on_migration.rb', line 2

def self.up
  create_table :tags do |t|
    t.column :name, :string
  end
  
  create_table :taggings do |t|
    t.column :tag_id, :integer
    t.column :taggable_id, :integer
    t.column :tagger_id, :integer
    t.column :tagger_type, :string
    
    # You should make sure that the column created is
    # long enough to store the required class names.
    t.column :taggable_type, :string
    t.column :context, :string
    
    t.column :created_at, :datetime
  end
  
  add_index :taggings, :tag_id
  add_index :taggings, [:taggable_id, :taggable_type, :context]
end