doppel.rb

class CreateAdminDoppelgangerSession < ActiveRecord::Migration
  def change
    create_table :admin_doppelganger_sessions do |t|
      t.integer "admin_user_id",           null: false
      t.references :user
      t.boolean "active",                  default: true
      t.date "logout_date"
      t.string "token",                    null: false
      t.string "return_to"

      t.timestamps
    end

    add_index :admin_doppelganger_sessions, :token
  end
end