scala - Play Framework 复选框表单绑定(bind)

Question

我在 html 模板中定义了以下复选框:

    <div class="answerDiv">
        @if(exam.currentQuestion.get.quesType == "RADIO_BUTTON") {
            <p>
                @for(answer <- exam.currentQuestion.get.answers) {
                    <input type="radio" id="@answer.id" name="answerRadio" value="@answer.id">&nbsp;&nbsp;@answer.text</input><br>
                }
            </p>
        }
        @if(exam.currentQuestion.get.quesType == "CHECK_BOX") {
            <p>
                @for(answer <- exam.currentQuestion.get.answers) {
                    <input type="checkbox" name="answerCheckbox" value="@answer.id">&nbsp;&nbsp;@answer.text</input><br>
                }
            </p>
        }
    </div>

我想要 Controller 中定义了表单的复选框的值:

  val runExamForm = Form(
    tuple(
      "currentQuestionId" -> text,
      "examId" -> text,
      "totalQuestions" -> number,
      "answerRadio" -> optional(number),
      "answerCheckBox" -> optional(list(number))
    )
  )

在我的操作中，我正在获取表单值，但answerCheckBox 的值始终为 None。为什么是这样？我做错了什么？

Answer 1

好的。我让它工作了。这是我在 View 模板中所做的事情:

    <div class="answerDiv">
        @if(exam.currentQuestion.get.quesType == "RADIO_BUTTON") {
            <p>
                @for(answer <- exam.currentQuestion.get.answers) {
                    <input type="radio" name="answerRadio" value="@answer.id">&nbsp;&nbsp;@answer.text</input><br>
                }
            </p>
        }
        @if(exam.currentQuestion.get.quesType == "CHECK_BOX") {
            <p>
                @for(answer <- exam.currentQuestion.get.answers) {
                    <input type="checkbox" id="@answer.id" name="answerCheckbox[@answer.id]" value="@answer.id">&nbsp;&nbsp;@answer.text</input><br>
                }
            </p>
        }
    </div>

注意复选框 html 渲染中的 name 属性。它必须是一个数组， Controller 中的绑定(bind)才能工作。