fix tax rates listing in invoices

app/models/invoice/data_presenter.rb

@@ -91,6 +91,14 @@ class Invoice
       Spree::Money.new(shipment.amount + shipment.additional_tax_total, currency:)
     end
 
+    def display_line_item_tax_rate(item)
+      all_tax_adjustments.select { |a|
+        a.adjustable.type == 'Spree::LineItem' && a.adjustable.id == item.id
+      }.map(&:originator).map { |tr|
+        number_to_percentage(tr.amount * 100, precision: 1)
+      }.join(", ")
+    end
+
     def display_shipment_tax_rates
       all_eligible_adjustments.select { |a|
         a.originator.type == 'Spree::TaxRate' && a.adjustable_type == 'Spree::Shipment'

app/models/invoice/data_presenter/line_item.rb

@@ -3,7 +3,7 @@
 class Invoice
   class DataPresenter
     class LineItem < Invoice::DataPresenter::Base
-      attributes :added_tax, :currency, :included_tax, :price_with_adjustments, :quantity,
+      attributes :id, :added_tax, :currency, :included_tax, :price_with_adjustments, :quantity,
                  :variant_id, :unit_price_price_and_unit, :unit_presentation,
                  :enterprise_fee_additional_tax, :enterprise_fee_included_tax
       attributes_with_presenter :variant
@@ -35,10 +35,6 @@ class Invoice
         fee_tax = enterprise_fee_included_tax || 0.0
         Spree::Money.new(price_with_adjustments - ((included_tax + fee_tax) / quantity), currency:)
       end
-
-      def display_line_item_tax_rates
-        tax_rates.map { |tr| number_to_percentage(tr.amount * 100, precision: 1) }.join(", ")
-      end
     end
   end
 end

app/views/spree/admin/orders/_invoice_table4.html.haml

@@ -32,7 +32,7 @@
         %td{:align => "right"}
           = item.display_amount_with_adjustments_without_taxes
         %td{:align => "right"}
-          = item.display_line_item_tax_rates
+          = @order.display_line_item_tax_rate(item)
         %td{:align => "right"}
           = item.display_amount_with_adjustments_and_with_taxes
     %tr