Update application.js

assets/javascripts/application.js

@@ -1,9 +1,9 @@
 $(function() {
-  $("input#issue_customer").on("change", function() {
+  $("input#issue_customer_id").on("change", function() {
     $.ajax({
       url:  "/filter_vehicles_by_customer",
       type: "GET",
-      data: { selected_customer: $("input#issue_customer").val() }
+      data: { selected_customer: $("input#issue_customer_id").val() }
     });
   });
 });