Changing password of the signed in user in code igniter - codeigniter

Question

I am working on Code Igniter and stuck in a place where I need to change the password of a signed-in user. I need help in picking up the user id of the signed-in user and through it I want to update the password of that user.
The following are the images of controller and models created of the project respectively.

Answer 1

Create html link:
<i class="fa fa-circle-o"></i>Change password
Create user controller:
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class User extends CI_Controller
{
public function __construct()
{
parent::__construct();
// Load form helper library
$this->load->helper('form');
// Load form validation library
$this->load->library('form_validation');
// Load session library
$this->load->library('session');
$this->load->model('Data_model');
}
public function changePassword()
{
$web = array();
$web['title'] = 'Change password';
$web['content'] = 'web/password';
$this->form_validation->set_rules('old_password', 'Old password', 'required|callback_check_password');
$this->form_validation->set_rules('new_password', 'New password', 'required');
$this->form_validation->set_rules('confirm_password', 'Confirm password', 'required|matches[new_password]');
if ($this->form_validation->run() == FALSE) {
$this->load->view('web_template',$web);
} else {
$id = $this->user_id;
$data = array(
'user_password' => $this->input->post('new_password'),
);
$this->Common_model->Data_model('user_login', $data, 'id', $id);
$this->session->set_flashdata('msg', 'Password changed Successfully');
redirect('user/changePassword');
}
}
function check_password($password) {
if($this->user_id)
$id = $this->user_id;
else
$id = '';
$result = $this->Data_model->check_user_password($id, $password);
if($result > 0)
$response = true;
else {
$this->form_validation->set_message('check_password', 'Old password is wrong');
$response = false;
}
return $response;
}
}
Change password html page in view:
<section class="content">
<div class="box">
<div class="box-header with-border">
<h3 class="box-title"><?php echo $title; ?></h3>
<div class="box-tools pull-right">
<button type="button" class="btn btn-box-tool" data-widget="collapse" data-toggle="tooltip" title="Collapse">
<i class="fa fa-minus"></i></button>
</div>
</div>
<?php
$attributes = array('class' => 'form-horizontal', 'id' => 'changePassword');
echo form_open('user/changePassword', $attributes);
?>
<div class="box-body">
<?php if (!empty($this->session->flashdata('msg'))) : ?>
<div class="alert alert-success alert-dismissable alertDiv"> <?php echo $this->session->flashdata('msg'); ?> </div>
<?php endif; ?>
<div class="row">
<div class="col-md-offset-2 col-md-8">
<div class="form-group">
<label for="inputEmail3" class="col-md-2 control-label">Old password</label>
<div class="col-md-8">
<input type="password" name="old_password" value="<?php echo (isset($form_data) ? $form_data->old_password : set_value('old_password')); ?>" class="form-control" id="old_password" placeholder="Old password">
<?php echo form_error('old_password', '<div class="error">', '</div>'); ?>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-offset-2 col-md-8">
<div class="form-group">
<label for="inputEmail3" class="col-md-2 control-label">New password</label>
<div class="col-md-8">
<input type="password" name="new_password" value="<?php echo (isset($form_data) ? $form_data->new_password : set_value('new_password')); ?>" class="form-control" id="new_password" placeholder="New password" autocomplete="off">
<?php echo form_error('new_password', '<div class="error">', '</div>'); ?>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-offset-2 col-md-8">
<div class="form-group">
<label for="inputEmail3" class="col-md-2 control-label">Confirm Password</label>
<div class="col-md-8">
<input type="password" name="confirm_password" value="<?php echo (isset($form_data) ? $form_data->confirm_password : set_value('confirm_password')); ?>" class="form-control" id="confirm_password" placeholder="Confirm Password" autocomplete="off">
<?php echo form_error('confirm_password', '<div class="error">', '</div>'); ?>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-offset-5" style="margin-top: 10px;">
<button type="submit" class="btn btn-primary">Submit</button>
</div>
</div>
</div>
<?php form_close(); ?>
</div>
<!-- /.box -->
</section>
Create Data_model in model add this function:
// Update data to table
public function update($table, $data, $primaryfield, $id)
{
$this->db->where($primaryfield, $id);
$q = $this->db->update($table, $data);
return $q;
}
//Check the old password:
function check_user_password($id = '', $password) {
$this->db->where('user_password', $password);
$this->db->where('id', $id);
return $this->db->get('user_login')->num_rows();
}