```ruby
module Spree::LineItemDecorator
  extend ActiveSupport::Concern

  included do
    has_many :gift_cards, class_name: Spree::VirtualGiftCard
    Spree::LineItem.delegate :gift_card?, :gift_card, to: :product
    prepend(InstanceMethods)
  end

  module InstanceMethods
    def redemption_codes
      gift_cards.map {|gc| {amount: gc.formatted_amount, redemption_code: gc.formatted_redemption_code}}
    end
  end
end

Spree::LineItem.include(Spree::LineItemDecorator)
```

Simplify line item gift card delegate statement
user
```ruby
module Spree::LineItemDecorator
  extend ActiveSupport::Concern

  included do
    has_many :gift_cards, class_name: Spree::VirtualGiftCard
    delegate :gift_card?, :gift_card, to: :product
    prepend(InstanceMethods)
  end

  module InstanceMethods
    def redemption_codes
      gift_cards.map {|gc| {amount: gc.formatted_amount, redemption_code: gc.formatted_redemption_code}}
    end
  end
end

Spree::LineItem.include(Spree::LineItemDecorator)
```
assistant