How to get Item-Quantity map using Spring MVC forms?-CodePudding

For each dish I have an input to specify the quantity of dishes, but how can I convert it DTO's DishQuantityMap? Where firstInteger - dishId, second - quantity of dishes ordered.

<form action="#" th:action="@{/greeting}" th:object="${Order}" method="post">
<span th:each="dish : ${dishList}">
<input id="number" type="number" value="42">
</span>
</form>

I know I am missing th:field in my code, that is because I don't know how to implement it properly.

public class Order {
    private String userName;
    Map<Integer, Integer> DishQuantityMap;
}

CodePudding user response：

I don't know what dishList is, but if it has an id field then the code for you form would look something like:

<form action="#" th:action="@{/greeting}" th:object="${Order}" method="post">
  <span th:each="dish : ${dishList}">
    <input th:field="*{dishQuantityMap[__${dish.id}__]}" type="number" />
  </span>
</form>