使用Javascript/fetch/Flask路由删除表的所有选定行

我正在尝试建立一个web应用程序，该应用程序管理带有员工目录的工作数据库，我在添加一个功能时遇到了麻烦，用户可以通过复选框选择多行，然后用“删除全部”按钮删除它们。

按下按钮时，它将返回消息框中选择的正确行数，确认后将返回后端中定义的204行，但不会发生任何情况，所选作业将保留在数据库中：

@jobs.route("/jobs/delete", methods=['POST'])
@login_required
def delete_jobs():
    try:
        jobs = request.get_json(force=True)['job_ids']
        for job_id in jobs:
            job = Job.query.get(job_id)
            if job and job.author == current_user:
                db.session.delete(job)
        db.session.commit()
        flash('Job(s) deleted successfully', 'danger')
        return ('', 204)
    except Exception as e:
        db.session.rollback()
        return ('An error occurred: {}'.format(e), 500)

这里是前端的JS代码：

    // Delete checked boxes
    document.getElementById("deleteAll").addEventListener("click", function() {
      if (rowCheckboxes.length === 0) {
        alert("Please select at least one job to delete.");
        return;
      }
  
      checkedIds = [];
      for (const checkbox of rowCheckboxes) {
        if (checkbox.checked) {
          checkedIds.push(checkbox.value);
        }
      }
  
      if (checkedIds.length === 0) {
        alert("Please select at least one job to delete.");
        return;
      }
  
      if (confirm(`Are you sure you want to delete ${checkedIds.length} job(s)?`)) {
        fetch('/jobs/delete', {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json'
          },
          body: JSON.stringify({ job_ids: checkedIds })
        })
        .then(function(response) {
          if (response.status === 204) {
            // remove the deleted job from the UI
          } else {
            alert("Failed to delete job.");
          }
        })
        .catch(function(error) {
          console.error("Error deleting job:", error);
          alert("Failed to delete job.");
        });
      }
    });
  });

我试图删除if语句：

if job and job.author == current_user:

并在查询后直接删除，但这不起作用。

如果能提供帮助，将不胜感激，谢谢！