我正在构建一个小应用程序,允许用户在课程中添加/删除学生。每次我添加/删除课程时,数据库都会更新,我会更新用户的课程总数。当我将一个学生添加到课程中它工作正常,但是当我去删除它们时,我返回0(来自我的PHP模型函数)。我相信它可能是jquery的一个问题,我想我可能需要使用克隆?所以我很抱歉这么长的帖子只是想确保你们有足够的代码来查看。 这是我的jQuery代码,用于添加和删除用户到课程:
function addUserToClass(user)
{
//creates the a data string to send to the controller with the user's id and the course id
var postString = "courseid="+$("#course option:selected").val()+"&uid="+user.find('input').val();
//adds the user to the course list in the database
$.post('index.php/admin/addUserToCourse',postString);
$("#courseList").append(user);
$('#courseList .addUser').text('(-)').removeClass('addUser').addClass('removeUser');
}
//removes a user from the selected course in the database as well as on the screen
function removeUserFromClass(user)
{
var postString = "courseid="+$("#course option:selected").val()+"&uid="+user.find('input').val();
//removes the user fromt the course in the database
$.post('admin/removeUserFromCourse',postString);
$(user).remove();
$('#usertable').append(user);
$('#usertable .removeUser').text('(+)').removeClass('removeUser').addClass('addUser');
}
这是我的jQuery,它更新了他们所在的课程数量:
function updateUserCourses(uid)
{
var postString = 'uid='+uid.siblings(':input').val();
$.post('index.php/admin/getUsersCourses', postString , function(data){
data = jQuery.parseJSON(data);
uid.siblings('.internalCounter').text(data.internal);
uid.siblings('.externalCounter').text(data.external);
})
}
不确定是否需要这个但我的PHP(codeigniter控制器)被调用:
function getUsersCourses()
{
$this->load->model('course_model');
$courses = $this->course_model->getUsersCourses($_POST['uid']);
echo json_encode($courses);
}
我的模特功能:
function getUsersCourses($uid)
{
$external = array();
$internal = array();
$final = array();
//Selects all of the courses the user has been added to
$usersCourses = $this->db->query("SELECT courseid FROM final_course_list WHERE uid='{$uid}'");
//If they have courses, proceed to process them
if ($usersCourses->num_rows() > 0)
{
//For every course they have, we get the category of the course
foreach($usersCourses->result() as $row)
{
$courseCat = $this->db->query("SELECT category FROM courses WHERE id = '{$row->courseid}'")->row_array();
if($courseCat['category'] == 'External Topics')
{
array_push($external, $courseCat);
}
else if($courseCat['category'] == 'Internal Topics')
{
array_push($internal, $courseCat);
}
}
//adds the internal and external amount of classes to one array
$final['internal'] = count($internal);
$final['external'] = count($external);
$result = $final;
}
else
{
$result = 0;
}
return $result;
}
答案 0 :(得分:0)
removeUserFromClass
不应该阅读:
$.post('index.php/admin/removeUserFromCourse',postString);
答案 1 :(得分:0)
没有比愚蠢的错误更糟糕的事情需要永远修复。我不认为我的JS是我的PHP模型有什么问题。而不是返回0我需要返回一个数组
array("internal"=>0,"external"=>0);