Codeigniter - Can't update data in MySQL Database - php

Question

I have some problem with CodeIgniter, I can't update data in a record in CodeIgniter. 'id_user' is the primary key of my user table. I have tried to solve this problem but I couldn't. I hope someone can help with this problem. Thanks a lot :)
I have posted the code below :
HTML5 code :
<form action="<?php echo base_url(). 'crud/update'; ?>" method="post">
<input name="id_user" type="text" class="form-control" value="<?php echo $id_usernya ?>">
<div class="form-group">
<label>Alamat :</label>
<textarea name="alamat_user" class="form-control" rows="5" placeholder="Alamat" ><?php echo $usernya->alamat_user ?></textarea>
</div>
<div class="form-group">
<input name="kodepos_user" type="text" class="form-control" value="<?php echo $usernya->kodepos_user ?>">
</div>
<div class="form-group">
<input type="hidden" name="provinsi_user">
<select name="provinsi_id_user" class="form-control">
<option value="">Pilih Provinsi</option>
<option selected value="<?php echo $usernya->provinsi_user ?>"><?php echo $usernya->provinsi_user ?></option>
<?php echo $provinsi ?>
</select>
</div>
<div class="form-group">
<input type="hidden" name="kota_user">
<select name="kota_id_user" class="form-control">
<option value="">Pilih Kota</option>
<option selected value="<?php echo $usernya->kota_user ?>"><?php echo $usernya->kota_user ?></option>
</select>
</div>
<input type="submit" class="btn btn-primary" value="Simpan">
</form>
Controller :
class Crud extends CI_Controller{
function __construct(){
parent::__construct();
$this->load->model('m_data');
$this->load->helper('url');
}
function edit($id_user){
$where = array('id_user' => $id_user);
$data['user'] = $this->m_data->edit_data($where,'user')->result();
$this->load->view('back/user/v_beranda',$data);
redirect('beranda/index');
}
function update(){
$id_user = $this->input->post('id_user');
$alamat_user = $this->input->post('alamat_user');
$kodepos_user = $this->input->post('kodepos_user');
$provinsi_id_user = $this->input->post('provinsi_id_user');
$kota_id_user = $this->input->post('kota_id_user');
$data = array(
'alamat_user' => $alamat_user,
'kodepos_user' => $kodepos_user,
'provinsi_id_user' => $provinsi_id_user,
'kota_id_user' => $kota_id_user
);
$where = array(
'id_user' => $id_user
);
$this->m_data->update_data($where,$data,'user');
redirect('beranda/index');
}
Model code :
<?php
class M_data extends CI_Model{
function edit_data($where,$table){
return $this->db->get_where($table,$where);
}
function update_data($where,$data,$table){
$this->db->where($where);
$this->db->update($table,$data);
}
}

Answer 1

Initialize your Model like what your have done on your Controller
class M_data extends CI_Model{
public function __construct() {
parent::__construct();
$this->load->database();
}
function edit_data($where,$table){
return $this->db->get_where($table,$where);
}
function update_data($where,$data,$table){
$this->db->where($where);
$this->db->update($table,$data);
}
}

Answer 2

try to print query to check what exact query getting executed
$this->db->last_query():
and which error its shows when you execute above query