Bring in Spree::Admin::PaypalPaymentsController

app/controllers/spree/admin/paypal_payments_controller.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Spree
+  module Admin
+    class PaypalPaymentsController < Spree::Admin::BaseController
+      before_action :load_order
+
+      def index
+        @payments = @order.payments.includes(:payment_method).
+          where(spree_payment_methods: { type: "Spree::Gateway::PayPalExpress" })
+      end
+
+      private
+
+      def load_order
+        @order = Spree::Order.where(number: params[:order_id]).first
+      end
+    end
+  end
+end