Fix split sort order

Author: binary-koan

app/graphql/mutations/transaction_split.rb

@@ -14,7 +14,7 @@ class TransactionSplit < BaseMutation
     def resolve(id:, splits:, total_amount_cents: nil, date: nil)
       transaction = Transaction.find(id)
 
-      expected_total_cents = total_amount_cents || (transaction.shop_amount_cents || transaction.amount_cents)
+      expected_total_cents = total_amount_cents || transaction.shop_amount_cents || transaction.amount_cents
 
       if splits.sum { |split| split.amount_cents } != expected_total_cents
         raise GraphqlErrors::ValidationError, "Transaction amounts do not match"

app/graphql/types/transaction_type.rb

@@ -35,5 +35,9 @@ def shop_amount(currency_id: nil)
 
       ExchangeRates::ConvertMoney.new([object.shop_amount], to_currency: Currency.find(currency_id)).call.sum
     end
+
+    def split_to
+      object.split_to.left_outer_joins(:category).order("categories.sort_order ASC", amount_cents: :asc, shop: :asc)
+    end
   end
 end