使用 ajax 和 foreach 的 Bootstrap 模式问题

问题描述

我正在尝试使用 BS 模式来呈现带有选择框的表单，并最终通过 ajax 调用更新数据库中的记录。打开模态的触发器 btn 是一组 <i></i> 标签，它们具有相同的类名 itagbtn 和 data-classschid="some_numbere" 以将变量传递给 PHP 脚本。 所以我应该通过ajax传递给PHP脚本的数据是模态表单中选择字段的值和被点击的i标签的data-classschdid的值 em>。 问题是，在 ajax 调用后，所有记录都会同时更新，而不仅仅是点击的记录。感谢您的帮助。以下是简化代码：

HTML 和模态

<tr>
  <td>
    <span class="spanClassstatus">
      Missed
    </span>
    <span class="wrapperSpan">
      <i class="btn itagbtn" data-classschid="1" data-toggle="modal" data-target="#ModalUpdateClassstatus"></i>
    </span>
  </td>
</tr>
<tr>
  <td>
    <span class="spanClassstatus">
      Taken
    </span>
    <span class="wrapperSpan">
      <i class="btn itagbtn" data-classschid="2" data-toggle="modal" data-target="#ModalUpdateClassstatus"></i>
    </span>
  </td>
</tr>

<!-- Modal -->
<div class="modal fade" id="ModalUpdateClassstatus" tabindex="-1" role="dialog" aria-labelledby="modalLabelClassstatus">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
          <h4 class="modal-title" id="modalLabelClassstatus">Update Class Status</h4>
          <button type="button" class="close d-block text-danger" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
      </div>
      <div class="modal-body">
        <form action="#" method="POST" id="modalForm">
          <div class="">
            <small>Select a new status for this class</small>
            <select name="selected_status_id" id="selected_status_id" required="required">
              <option value="" selected="selected">Choose an item</option>
              <option value="taken">Taken</option>
              <option value="missed">Missed</option>
            </select>
          </div>
          <i class="fa fa-spinner fa-pulse fa-3x fa-fw text-primary d-none" id="statusspinner"></i>
          <span class="sr-only">Please wait ...</span>
          <button type="submit" id="editClassstatusBtn" class="btn btn-success mt-2" style="font-size:0.9rem;">Update Status</button>
        </form>

      </div> <!-- end of modal-body -->
    </div>
  </div>
</div>

JAVASCRIPT

<script>
  $( document ).ready(
    function(){
      $('#ModalUpdateClassstatus').on('submit',function(e){
      e.preventDefault();
      const itagTriggers=document.querySelectorAll('i[data-classschid]');
      itagTriggers.forEach(itag => {
    
        var class_sch_id = itag.getAttribute('data-classschid');
        var selected_status_id = $('#selected_status_id').val();
        var statusspinner = $('#statusspinner');
        var spanClassstatus = $(itag).parent().siblings('.spanClassstatus');

        statusspinner.removeClass('d-none');
        $('#editClassstatusBtn').prop('disabled',true);
        var url = "{{ path('class_schedule_tch_status_update')|escape('js') }}";
        var type = "POST";
        $.ajax({
          url : url,type: type,data : {
            'selected_status_id': selected_status_id,'class_sch_id': class_sch_id
          },success: function(returnedMsg) {
            if (returnedMsg['status'] == "success") {
              $(spanClassstatus).text(returnedMsg['msg']);
            }
            else if(returnedMsg['status'] == "error"){
              //error stuff
            }
            else{
              //unkNown error
            }
          }
        });     
      })
    });     
  });
</script>

解决方法

每当您点击 i 标签时，您都可以将 data-attr 值保存在隐藏输入中，然后使用此隐藏输入值传递给您的 ajax 调用以及引用当前 tr where { {1}} 标签已被点击。

演示代码：

i

//on click of itag
$(".itagbtn").on("click",function() {
  $("[name=classschid]").val($(this).data("classschid")) //add value to hidden input inside modal
})
$('#ModalUpdateClassStatus').on('submit',function(e) {
  e.preventDefault();
  var class_sch_id = $("[name=classschid]").val(); //get itag value
  var selected_status_id = $('#selected_status_id').val();
  var statusSpinner = $('#statusSpinner');
  var spanClassStatus = $("i[data-classschid=" + class_sch_id + "]").parent().siblings('.spanClassStatus'); ///use it here as well
  console.log(class_sch_id)
  statusSpinner.removeClass('d-none');
  /*$('#editClassStatusBtn').prop('disabled',true);
  var url = "{{ path('class_schedule_tch_status_update')|escape('js') }}";
  var type = "POST";
  $.ajax({
    url: url,type: type,data: {
      'selected_status_id': selected_status_id,'class_sch_id': class_sch_id
    },success: function(returnedMsg) {
      if (returnedMsg['status'] == "success") {*/
  $(spanClassStatus).text("ok ok"); //returnedMsg['msg']
  /*} else if (returnedMsg['status'] == "error") {
        //error stuff
      } else {
        //unknown error
      }
   }
  });*/

});