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У меня есть страница, которая отображает список всех доступных журналов. Я хочу написать язык выражений тимелеафа, который выделяет уже подписанные журналы, используя там идентификатор журнала. Поэтому для всех подписанных журналов текст для гиперссылки href должен быть «Отменить подписку» и наоборот, если он не подписан.Springboot Thymeleaf: как форматировать строку в соответствии с условием
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head lang="en">
<title>TBD</title>
<!--/*/ <th:block th:include="fragments/headinc :: head"></th:block> /*/-->
<link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" />
</head>
<body>
<div class="container">
<h1 th:text="'Hello, ' + ${user.fullname} + '!'" />
<p>Manage your subscriptions here</p>
<form role="form" id="form-search" class="form-inline"
th:action="@{/subscriptions}" method="get">
<input type="text" class="form-control" id="filter" name="filter"
placeholder="Enter filter"></input>
<button type="submit" class="btn btn-default">
<span class="glyphicon glyphicon-search"></span> Search
</button>
<a th:href="@{/logout}" class="btn btn-link" role="button">Logout</a>
</form>
<div th:if="${not #lists.isEmpty(journals)}">
<form role="form" id="form-subscribe" th:action="@{/subscribe}"
method="post">
<input type="hidden" name="journalId" id="journalId" />
</form>
<table id="table" class="table">
<thead>
<tr>
<th>Subject</th>
<th>Filename</th>
<th>Tags</th>
<th>View</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<tr th:each="journal : ${journals}">
<td th:text="${journal.subject}"><a
href="/product/${product.id}">Id</a></td>
<td th:text="${journal.filename}">Product Id</td>
<td th:text="${journal.tags}">Description</td>
<td><a>View</a></td>
<td><a id="href"
th:href="'javascript:subscribe(\'' + ${journal.id} + '\');'">Subscribe</a>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</body>
<script type="text/javascript">
function subscribe(journalId) {
$('#journalId').val(journalId);
$('#form-subscribe').submit();
}
</script>
<script type="text/javascript" th:inline="javascript">
/*<![CDATA[*/
$(document).ready(function() {
var modelAttributeValue = [[${subscriptions}]];
console.log(modelAttributeValue);
alert(modelAttributeValue);
var array = modelAttributeValue.split(';');
console.log(array);
alert(array);
});
/*]]>*/
</script>
</html>
Контроллер
@Controller
public class SubscriptionController {
@Autowired
private SubscriberService subscriberService;
@RequestMapping(value = "/subscribe", method = RequestMethod.POST)
String subscribe(Model model, @RequestParam("journalId") Integer journalId) {
JournalToken token = (JournalToken) SecurityContextHolder.getContext().getAuthentication();
Account user = (Account) token.getCredentials();
model.addAttribute("user", user);
Journal journal = this.subscriberService.findJournalById(journalId);
this.subscriberService.subscribeJournalForSubscriber(journal, user);
return "redirect:subscriptions";
}
@RequestMapping(value = "/subscriptions", method = RequestMethod.GET)
String list(Model model) {
JournalToken token = (JournalToken) SecurityContextHolder.getContext().getAuthentication();
Account user = (Account) token.getCredentials();
model.addAttribute("user", user);
ArrayList<Journal> journals = this.subscriberService.FindAllJournals();
model.addAttribute("journals", journals);
StringBuilder sub = new StringBuilder();
ArrayList<Subscription> subscribed = this.subscriberService.getSubscribedJournalsForSubscriber(user);
model.addAttribute("subscriptions", subscribed);
return "subscriptions";
}
}
модель подписки
@Entity
@Table(uniqueConstraints={@UniqueConstraint(columnNames={"userId", "journalId"})})
public class Subscription {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
@Version
private Integer version;
private Integer userId;
private Integer journalId;
public void setId(Integer id) {
this.id = id;
}
public Integer getId() {
return this.id;
}
public void setVersion(Integer version) {
this.version = version;
}
public Integer getVersion() {
return this.version;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public Integer getUserId() {
return this.userId;
}
public void setJournalId(Integer journalId) {
this.journalId = journalId;
}
public Integer getJournalId() {
return this.journalId;
}
}