java - 从模态窗口获取值

Question

我在从模态窗口获取字段值时遇到问题。

 <div class="modal fade" id="addModal" tabindex="-1" role="dialog" aria-labelledby="addModal" aria-hidden="true">
        <form th:action="@{/groups/add}" method="post">
            <div class="modal-dialog" role="document">
                <div class="modal-content">
                    <div class="modal-header">
                        <h5 class="modal-title" id="addModal">Add group</h5>
                        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                            <span aria-hidden="true">&times;</span>
                        </button>
                    </div>
                    <div class="modal-body">
                        <div class="form-group">
                            <label for="recipient-name" class="col-form-label">Group Name</label> <input type="text"
                                class="form-control" id="addName" name="name">
                        </div>
                        <div class="form-group">
                            <label for="recipient-name" class="col-form-label">Faculty</label> <select
                                class="form-control">
                                <option th:value=0>Faculty not assign</option>
                                <option th:each="faculty : ${faculties}" th:value="${faculty.id}"
                                    th:utext="${faculty.name}">Faculty</option>
                            </select>
                        </div>
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                        <button type="submit" class="btn btn-primary">Save</button>
                    </div>
                </div>
            </div>
        </form>
    </div>

在浏览器中，当我使用“添加”方法时，我可以从表中选择任何教师，它工作正常，但是当我按下“保存”按钮时，只有名称返回到 Controller ，而没有有关所选教师的信息。我错过了什么？

Answer 1

最后我解决了这个问题 - 我忘记为存储 coachId 的字段命名。这是错误:

<label for="recipient-name" class="col-form-label">Faculty</label> 
<select class="form-control">

正确:

<label for="faculyId" class="col-form-label">Faculty</label> 
<select class="form-control" id="addFaculty" name="facultyId">