Extract query object out of UsersController

app/controllers/spree/users_controller.rb

@@ -60,12 +60,7 @@ def update
 
     def orders_collection
       if OpenFoodNetwork::FeatureToggle.enabled?(:customer_balance, spree_current_user)
-        orders = @user.orders
-          .where.not(Spree::Order.in_incomplete_state.where_values_hash)
-          .select('spree_orders.*')
-          .order('completed_at desc')
-
-        OutstandingBalance.new(orders).query
+        CompleteOrdersWithBalance.new(@user).query
       else
         @user.orders.where(state: 'complete').order('completed_at desc')
       end

app/queries/complete_orders_with_balance.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class CompleteOrdersWithBalance
+  def initialize(user)
+    @user = user
+  end
+
+  def query
+    orders = @user.orders
+      .where.not(Spree::Order.in_incomplete_state.where_values_hash)
+      .select('spree_orders.*')
+      .order(completed_at: :desc)
+
+    OutstandingBalance.new(orders).query
+  end
+end