From 5b7f69ea729f8bfa9043908f0c8252fa97232e57 Mon Sep 17 00:00:00 2001
From: johnsgp <john.sg.pub@gmail.com>
Date: Fri, 15 Nov 2019 13:07:41 +0000
Subject: [PATCH] Reintroduce validation removed in video 378 (Going Reactive
 with Spring WebClient)

---
 .../controllers/UserController.java             | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/main/java/guru/springframework/springrestclientexamples/controllers/UserController.java b/src/main/java/guru/springframework/springrestclientexamples/controllers/UserController.java
index af68ebfe..dbca0fd4 100644
--- a/src/main/java/guru/springframework/springrestclientexamples/controllers/UserController.java
+++ b/src/main/java/guru/springframework/springrestclientexamples/controllers/UserController.java
@@ -47,7 +47,22 @@ public String formPost(Model model, ServerWebExchange serverWebExchange) {
                 apiService
                         .getUsers(serverWebExchange
                                 .getFormData()
-                                .map(data -> new Integer(data.getFirst("limit")))));
+                                .map(data -> {
+                                    String limitInput = data.getFirst("limit");
+                                    log.debug("Received Limit value: " + limitInput);
+                                    Integer limit;
+                                    try {
+                                        limit = new Integer(limitInput);
+                                    } catch (NumberFormatException e) {
+                                        limit = 0;
+                                    }
+                                    //default if null or zero
+                                    if (limit == 0) {
+                                        log.debug("Setting limit to default of 10");
+                                        limit = 10;
+                                    }
+                                    return limit;
+                                })));
 
         return "userlist";
     }