Using ajax to grab information from database - php

Question

I m using codeigniter and would like to grab some user info with ajax. This is what I have but it s not working
In the view I have a defined variable:
<script type="text/javascript">
var end_user = "<? echo $user_id; ?>";
</script>
<div id="tabs6"></div>
js file:
function get_experience()
{
$.post(base_url + "index.php/home/get_experience", { user : end_user }, function(data) {
if (data.status == 'ok')
{
$("div#tabs6").html(data);
}
else
{ //nothing }
}, "json");
}
get_experience();
controller:
public function get_experience()
{
$this->load->model('experience_model');
$end_user = $this->input->post('user');
$one_exp = $this->experience_model->one_exp($end_user);
if ($one_exp->num_rows() > 0)
{
$one_exp_html = '<ul>';
foreach($one_exp->result() as $exp)
{
$one_exp_html .= '<li>';
$one_exp_html .= $exp->experience;
$one_exp_html .= '</li>';
}
$one_exp_html .= '</ul>';
$result = array('status' => 'ok', 'content' => $one_exp_html);
return json_encode($result);
exit();
}
else
{
$result = array('status' => 'ok', 'content' => 'nothing here');
return json_encode($result);
exit();
}
}
model:
function one_exp($end_user)
{
$query_str = "SELECT experience FROM exp WHERE user_id = ?";
$query = $this->db->query($query_str, $end_user);
}

Answer 1

You need to add return $query to your one_exp method.
EDIT
You're setting user_id in your view, but then using end_user in your javascript function get_experience().
Also, since it's json you'll need to change the html fill to
$("div#tabs6").html(data.content);
For more debugging add an alert to your callback (right before if (data.status == 'ok') add alert(data);)

Answer 2

You've got to echo the result out I think, not return it.

Answer 3

I am not sure but problem occurs in end_user value in js.Try this oneView File:
<script type="text/javascript">
var end_user = "<? echo $user_id; ?>";
get_experience(end_user);
</script>
<div id="tabs6"></div>
The js file:
function get_experience(foo)
{
$.post(base_url + "index.php/home/get_experience", { user : foo }, function(data) {
if (data.status == 'ok')
{
$("div#tabs6").html(data);
}
else
{ //nothing }
}, "json");
}