Update & Display Data from a session - php

Question

I'm trying to do update profile from a session. I got confused because I can print username because of session. but password, Full Name, and level doesn't match with database.
It should be
Username : Ratih | Full Name : Ratih Cha | Level : Sales
But the result
Username : Ratih | Full Name : Administrator | Level : Admin
Here is my Controller:
public function profile(){
$uprofile = $this->salesModel->openProfile();
$data = array(
"username" => $uprofile[0]['username'],
"fullname" => $uprofile[0]['fullname'],
"level" => $uprofile[0]['level'],
"pic" => $uprofile[0]['pic']
);
$this->load->view('v_navbar');
$this->load->view('v_leftside');
$this->load->view('v_profile', $data);
}
Model
public function openProfile(){
$username = $this->session->userdata('username');
$data = $this->db->get('tuser');
$this->db->where('username', $username);
return $data->result_array();
}
View
<form role="form" action="<?php echo base_url()."index.php/SalesAdmin/update_profile/"?>" method="post">
<div class="form-group">
<label> Username : </label>
<input type="text" class="form-control" id="datepick" name="fu_date" value="<?php echo $_SESSION['username']; ?>" readonly>
</div>
<div class="form-group">
<label> Full Name : </label>
<input type="text" class="form-control" id="datepick" name="fu_date" value="<?php echo $fullname; ?>">
</div>
<div class="form-group">
<label> Level : </label>
<input type="text" class="form-control" id="datepick" name="fu_date" value="<?php echo $level; ?>" readonly>
</div>
<div class="form-group">
<img data-name="<?php echo $_SESSION['username']; ?>" id="profile" class="img-circle" alt="Avatar" width="40px" height="32px"/><span></span></i>[enter image description here][1]
<?php echo form_open_multipart('upload/do_upload');?>
<?php echo form_upload('pic'); ?>
</div>
<div>
<button type="submit" class="btn btn-default">Submit</button>
</div>
</form>