apply pagination data concern to orders controller

app/controllers/api/orders_controller.rb

@@ -1,5 +1,7 @@
 module Api
   class OrdersController < Api::BaseController
+    include PaginationData
+
     def show
       authorize! :read, order
       render json: order, serializer: Api::OrderDetailedSerializer, current_order: order
@@ -10,9 +12,11 @@ module Api
 
       search_results = SearchOrders.new(params, current_api_user)
 
+      orders = search_results.orders
+
       render json: {
-        orders: serialized_orders(search_results.orders),
-        pagination: search_results.pagination_data
+        orders: orders,
+        pagination: pagination_required? ? pagination_data(orders) : nil
       }
     end
 

app/services/search_orders.rb

@@ -8,17 +8,6 @@ class SearchOrders
     @orders = fetch_orders
   end
 
-  def pagination_data
-    return unless using_pagination?
-
-    {
-      results: @orders.total_count,
-      pages: @orders.num_pages,
-      page: params[:page].to_i,
-      per_page: params[:per_page].to_i
-    }
-  end
-
   private
 
   attr_reader :params, :current_user
@@ -50,6 +39,6 @@ class SearchOrders
   end
 
   def using_pagination?
-    params[:per_page]
+    params[:page]
   end
 end