如何使用胸腺叶中的另一个对象设置对象的值？

Question

我正在传递一个post对象和当前作者，我希望将“*{ loggedInUser }”的值设置为"${loggedInUser.uid}“。

    @GetMapping("/showNewBlogForm")
    public String showNewPostForm(Model model) {
        Post post = new Post();
        model.addAttribute("post", post);
        model.addAttribute("loggedInUser", getLoggedInUser());
        return "new_post";
    }

​

<div class="container">
        <h2>Create Blog</h2>
        <h2 th:text="${loggedInUser.uid}"></h2>
        <form action="#" th:action="@{/publishPost}" th:object="${post}" method="post">
            <input type="text" th:field="*{title}" placeholder="Title" class="form-control mb cp-4" required>
            <input type="text" th:field="*{excerpt}" placeholder="Excerpt" class="form-control mb cp-4" required>
            <textarea type="text" rows="10" th:field="*{content}" placeholder="Content" class="form-control mb cp-4" required></textarea>
            <input type="text" th:value="${loggedInUser.uid}" th:field="*{author}" class="form-control mb cp-4">
            <input type="text" th:field="*{tagsString}" placeholder="Tags" class="form-control mb cp-4">
            <button type="submit" class="btn btn-info col-2"> Publish </button>
        </form>

        <hr>

        <a th:href = "@{/}"> Back to Home Page</a>
    </div>

1：https://i.stack.imgur.com/7o7d5.png

​

Answer 1

只需用name="author"替换th:field="*{author}"即可

<input type="text" th:value="${loggedInUser.uid}" name="author" class="form-control mb cp-4">

多亏了th:value，默认情况下，输入将包含"loggedInUser“的uid。

多亏了name，输入值将在提交表单时绑定到Post对象的"author“字段。