我正在尝试在 ajax 调用中一次从数据库中更新和获取更新的行
JS中的就绪函数
$("button[name='teacher_lock_exam']").on(ace.click_event, function () {
var current_exams_id = $(this).attr('id');
bootbox.confirm("Are you sure you want to lock the exam? <br/><br/>" +
"Locked exam cannot be modified until exam committee unlock it.", function (result) {
if (result) {
lock_exam(current_exams_id);
bootbox.alert("Your Exam has been Locked !<br/><br/> Contact with Exam committee to modify that exam again.");
}
});
});
function lock_exam(current_exams_id) {
$.ajax({
url: "teacher_internal_exam_management/lock_exam/" + current_exams_id,
type: "POST",
dataType: "json",
success: function (row) {
alert('success');
alert(row[0].access_status);
}
});
}
我的teacher_internal_exam_management 控制器
public function lock_exam($current_exams_id)
{
$this->load->model('teacher_internal_exam_management_model');
$this->teacher_internal_exam_management_model->lock_exam($current_exams_id);
echo (json_encode($this->teacher_internal_exam_management_model->get_exam_details($current_exams_id)));
}
我的teacher_internal_exam_management_model 模型
function lock_exam($current_exam_id, $data)
{
$this->db->query("update current_exams set access_status = 'locked' where current_exams_id='".$current_exam_id."'");
}
function get_exam_details($exam_id)
{
$query = $this->db->query("select * from current_exams
where
current_exams_id = '" . $exam_id . "'
");
return $query->result();
}
现在ajax调用正在更新数据,但是控制器中的echo没有返回该行。意味着ajax的成功函数没有运行。为什么这不起作用?代码有问题吗?