백엔드/타임리프

타임리프 조건식(if, unless, switch)

김어찐 2021. 9. 12. 16:51
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조건을 충족시키지 않으면 태그자체가 삭제된다.

 

 

Controller

    private void addUsers(Model model) {
        List<User> list = new ArrayList<>();
        list.add(new User("userA",10));
        list.add(new User("userB",20));
        list.add(new User("userC",30));
        model.addAttribute("users",list);
    }

    @GetMapping("/condition")
    public String condition(Model model) {
        addUsers(model);
        return "basic/condition";
    }

 

HTML

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>if, unless</h1>
<table border="1">
    <tr>
        <th>count</th>
        <th>username</th>
        <th>age</th>
    </tr>
    <tr th:each="user, userStat : ${users}">
        <td th:text="${userStat.count}">1</td>
        <td th:text="${user.username}">username</td>
        <td>
            <span th:text="${user.age}">0</span>
            <span th:text="'미성년자'" th:if="${user.age lt 20}"></span>
            <span th:text="'미성년자'" th:unless="${user.age ge 20}"></span>
        </td>
    </tr>
</table>
<h1>switch</h1>
<table border="1">
    <tr>
        <th>count</th>
        <th>username</th>
        <th>age</th>
    </tr>
    <tr th:each="user, userStat : ${users}">
        <td th:text="${userStat.count}">1</td>
        <td th:text="${user.username}">username</td>
        <td th:switch="${user.age}">
            <span th:case="10">10살</span>
            <span th:case="20">20살</span>
            <span th:case="*">기타</span>
        </td>
    </tr>
</table>
</body>
</html>
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