class CreateApprovalItems < ActiveRecord::Migration[5.1]
  def change
    create_table :approval_items do |t|
      t.integer :request_id,    null: false
      t.integer :resource_id
      t.string  :resource_type, null: false
      t.string  :event,         null: false
      t.text    :params

      t.timestamps

      t.index :request_id
    end

    add_index :approval_items, [:resource_id, :resource_type]
  end
end