Validation annotations

Maria Usina · Maria Usina · commit 2c5ad68c139e · 2024-12-13T17:12:48.000-06:00
diff --git a/src/main/java/org/launchcode/codingevents/controllers/EventController.java b/src/main/java/org/launchcode/codingevents/controllers/EventController.java
@@ -1,8 +1,10 @@
 package org.launchcode.codingevents.controllers;
 
+import jakarta.validation.Valid;
 import org.launchcode.codingevents.data.EventData;
 import org.launchcode.codingevents.models.Event;
 import org.springframework.stereotype.Controller;
+import org.springframework.validation.Errors;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.ui.Model;
 
@@ -58,7 +60,15 @@ public String displayCreateEventForm(Model model) {
 
     //Model binding. It creats an object newEvent from Model Event
     @PostMapping("create")
-    public String processCreateEventForm(@ModelAttribute Event newEvent) {
+    public String processCreateEventForm(@ModelAttribute @Valid Event newEvent,
+                                         Errors errors, Model model) {
+
+        if(errors.hasErrors()){
+            model.addAttribute("title", "Create Event");
+            model.addAttribute("errorMsg", "Bad data");
+            return "events/create";
+        }
+
         EventData.add(newEvent);
         return "redirect:/events";
     }
diff --git a/src/main/java/org/launchcode/codingevents/models/Event.java b/src/main/java/org/launchcode/codingevents/models/Event.java
@@ -1,18 +1,31 @@
 package org.launchcode.codingevents.models;
 
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+
 import java.util.Objects;
 
 public class Event {
 
     private int id;
     private static int nextId = 1;
 
+    @NotBlank
+    @Size(min = 3, max = 50, message = "Name must be between 3 and 50 characters")
     private String name;
+
+    @Size(max = 500, message = "Description too long!")
     private String description;
 
-    public Event(String name, String description) {
+    @NotBlank
+    @Email(message = "Invalid email. Try again.")
+    private String contactEmail;
+
+    public Event(String name, String description, String contactEmail) {
         this.name = name;
         this.description = description;
+        this.contactEmail = contactEmail;
         this.id = nextId;
         nextId++;
     }
@@ -33,6 +46,14 @@ public void setDescription(String description) {
         this.description = description;
     }
 
+    public @Email String getContactEmail() {
+        return contactEmail;
+    }
+
+    public void setContactEmail(@Email String contactEmail) {
+        this.contactEmail = contactEmail;
+    }
+
     public int getId() {
         return id;
     }
diff --git a/src/main/resources/templates/events/create.html b/src/main/resources/templates/events/create.html
@@ -7,6 +7,8 @@ <h1>Create Event</h1>
 
 <nav th:replace="fragments :: navigation"></nav>
 
+<p th:text="${errorMsg}" style="color:red;"></p>
+
 <form method="post">
     <div class="form-group">
         <label>Name
@@ -20,6 +22,12 @@ <h1>Create Event</h1>
         </label>
     </div>
 
+    <div class="form-group">
+        <label>Contact Email
+            <input type="text" name="contactEmail" class="form-control">
+        </label>
+    </div>
+
     <div class="form-group">
         <input type="submit" value="Create Event" class="btn btn-success">
     </div>
diff --git a/src/main/resources/templates/events/index.html b/src/main/resources/templates/events/index.html
@@ -29,12 +29,14 @@ <h1>All Events</h1>
         <th>Name</th>
         <th>Description</th>
         <th>Edit</th>
+        <th>Contact Email</th>
     </tr>
     </thead>
     <tr th:each="event : ${events}">
         <td th:text="${event.id}"></td>
         <td th:text="${event.name}"></td>
         <td th:text="${event.description}"></td>
+        <td th:text="${event.contactEmail}"></td>
         <td><a th:href="@{/events/edit/{id}(id=${event.id})}">Edit</a></td>
     </tr>
 </table>
