java - th :disabled objects in Thymeleaf

Question

我有一个基本的 SpringBoot 2.0.5.RELEASE 应用程序。使用Spring Initializer、JPA、嵌入式Tomcat、Thymeleaf模板引擎，打包为可执行JAR文件。

我有一个只读的选择对象，

<select id="selectInvoiceId" th:field="*{invoice}" th:disabled="${resto.id != null}" >
    <option value="0">PLEASE SELECT AN INVOICE</option>
    <option th:each="invoice : ${invoices}" 
            th:value="${invoice.id}" 
            th:text="${invoice.symbol}">
    </option>
</select>

在我的 Controller 中

@RequestMapping(value = { "/save" }, method = RequestMethod.POST)
public String saveWallet(@Valid @ModelAttribute("wallet") WalletPayload walletPayload, 
    BindingResult bindingResult) {
    ..
}

在我的 WalletPayload 对象中:

@NotNull
private Invoice invoice;

然后我在验证中总是出错，因为发票为空，我想知道是否有只读对象的解决方法

我试过了，还是报错:

@RequestMapping(value = { "/save" }, method = RequestMethod.POST)
    public String saveWallet(@Valid @ModelAttribute("wallet") WalletPayload walletPayload,
            BindingResult bindingResult) {


        LOG.debug("WalletPayload walletPayload [ " + walletPayload + " ]");

        if (walletPayload.getId() != null) {
            Invoice fakeInvoine = new Invoice("fake-inv");
            fakeInvoice.setId((long)-1);
            walletPayload.setInvoice(fakeInvoice);
        }


        if (bindingResult.hasErrors()) {
            return serverContextPath + WALLET_LIST_VIEW_NAME;
        }

我也试过只读，但它没有作为选项出现在选择对象上

Answer 1

如果您希望发送值但不希望用户能够编辑它，您应该选择使用readonly。

disabled 和readonly 的使用有细微差别

比较

• readonly items are not editable, but will be sent when once submited.
• disabled items are not editable and are not sent once submited.
• readonly items are focus-able while disabled one are not.