Thymeleaf：<form>中的POST或PUT：动作取决于条件

Question

是否可以在POST中分配PUT或from th:action方法，具体取决于th:if？

类似的东西：

<form th:if="${firm.firmId} == null" th:action="@{~/firms/save}" method="POST" modelAttribute="firm" th:object="${firm}">

<form th:if="${firm.firmId} != null" th:action="@{~/firms/save}" method="PUT" modelAttribute="firm" th:object="${firm}">

Answer 1

Thymeleaf有条件算子

condition ? first_expression : second_expression;

您可以将此运算符用于您的目的：

<form  th:action="@{~/firms/save}" th:method="${firm.firmId} != null ? PUT : POST" modelAttribute="firm" th:object="${firm}">