self.up

in db/migrate/20150113001832_acts_as_taggable_on_migration.acts_as_taggable_on_engine.rb [2:25]

• 14 lines of code
• 1 McCabe index (conditional complexity)

  def self.up
    create_table :tags do |t|
      t.string :name
    end

    create_table :taggings do |t|
      t.references :tag

      
      
      t.references :taggable, polymorphic: true
      t.references :tagger, polymorphic: true

      
      
      t.string :context, limit: 128

      t.datetime :created_at
    end

    add_index :taggings, :tag_id
    add_index :taggings, [:taggable_id, :taggable_type, :context]
  end