BAEL-4224: Hidden inputs with thymeleaf

2020-08-24 09:56:00 -06:00 · 2020-08-24 09:56:00 -06:00 · c02caaac89
parent 93587c1ee5
commit c02caaac89
3 changed files with 126 additions and 0 deletions
--- a/spring-thymeleaf-3/src/main/java/com/baeldung/thymeleaf/blog/BlogController.java
+++ b/spring-thymeleaf-3/src/main/java/com/baeldung/thymeleaf/blog/BlogController.java
@ -0,0 +1,24 @@
+package com.baeldung.thymeleaf.blog;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+
+import java.util.Random;
+
+@Controller
+public class BlogController {
+
+    @GetMapping("/blog/new")
+    public String newBlogPost(Model model)
+    {
+        // Set a random ID so we can see it in the HTML form
+        BlogDTO blog = new BlogDTO();
+        blog.setBlogId(Math.abs(new Random().nextLong() % 1000000));
+
+        model.addAttribute("blog", blog);
+
+        return "blog/blog-new";
+    }
+
+}
--- a/spring-thymeleaf-3/src/main/java/com/baeldung/thymeleaf/blog/BlogDTO.java
+++ b/spring-thymeleaf-3/src/main/java/com/baeldung/thymeleaf/blog/BlogDTO.java
@ -0,0 +1,66 @@
+package com.baeldung.thymeleaf.blog;
+
+import java.util.Date;
+
+public class BlogDTO {
+
+    private long blogId;
+
+    private String title;
+
+    private String body;
+
+    private String author;
+
+    private String category;
+
+    private Date publishedDate;
+
+    public long getBlogId() {
+        return blogId;
+    }
+
+    public void setBlogId(long blogId) {
+        this.blogId = blogId;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getBody() {
+        return body;
+    }
+
+    public void setBody(String body) {
+        this.body = body;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public String getCategory() {
+        return category;
+    }
+
+    public void setCategory(String category) {
+        this.category = category;
+    }
+
+    public Date getPublishedDate() {
+        return publishedDate;
+    }
+
+    public void setPublishedDate(Date publishedDate) {
+        this.publishedDate = publishedDate;
+    }
+}
--- a/spring-thymeleaf-3/src/main/resources/templates/blog/blog-new.html
+++ b/spring-thymeleaf-3/src/main/resources/templates/blog/blog-new.html
@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>Hidden Input Examples</title>
+</head>
+<body>
+
+<h2>Hidden Input Example 1</h2>
+<form action="#" method="post" th:action="@{/blog}" th:object="${blog}">
+    <input type="text" th:field="*{title}">
+    <input type="text" th:field="*{category}">
+    <textarea th:field="*{body}"></textarea>
+    <input type="hidden" th:field="*{blogId}" id="blogId">
+    <input type="submit">
+</form>
+
+<h2>Hidden Input Example 2</h2>
+<form action="#" method="post" th:action="@{/blog}" th:object="${blog}">
+    <input type="text" th:field="*{title}">
+    <input type="text" th:field="*{category}">
+    <textarea th:field="*{body}"></textarea>
+    <input type="hidden" th:value="${blog.blogId}" th:attr="name='blogId'"/>
+    <input type="submit">
+</form>
+
+<h2>Hidden Input Example 3</h2>
+<form action="#" method="post" th:action="@{/blog}" th:object="${blog}">
+    <input type="text" th:field="*{title}">
+    <input type="text" th:field="*{category}">
+    <textarea th:field="*{body}"></textarea>
+    <input type="hidden" th:value="${blog.blogId}" name="blogId"/>
+    <input type="submit">
+</form>
+
+</body>