class CreateCategorizations < ActiveRecord::Migration
  def up
    unless table_exists?('categorizations')
      create_table :categorizations do |t|
        t.references :event
        t.references :category
      end

      add_index :categorizations, :event_id
      add_index :categorizations, :category_id
    end
  end

  def down
    drop_table :categorizations
  end
end