How should I use DB Transactions

I would like to be able to use Codeigniter Database Transactions. But I am new to this and I am unsure if have set it correct to what I am after.

What I am after if there is a error while trying to insert data into my insert_userdata() model function then will roll back data from my insert_user() and also insert_userdata() model functions

I have use the Database Transactions on my controller but not sure if that is correct.

Would like some guidance on this thanks.

Controller

PHP Code:

<?php

class Add extends MX_Controller {

    private $error = array();

    public function __construct() {
        parent::__construct();
        $this->load->library('form_validation');
        $this->load->library('upload');
        $this->load->model('admin/user/add_user_model');
    }

    public function index() {
        $this->form_validation->set_rules('username', 'Username', 'trim|required');
        $this->form_validation->set_rules('firstname', 'Firstname', 'trim');
        $this->form_validation->set_rules('lastname', 'Lastname', 'trim');
        $this->form_validation->set_rules('email', 'Email', 'trim|valid_email');
        $this->form_validation->set_rules('password', 'Password', 'trim');
        $this->form_validation->set_rules('confirm_password', 'Confirm Password', 'trim|matches[password]');

        if (($this->form_validation->run()) && $this->upload())  {

            $upload_data = $this->upload->data();

            $this->db->trans_start();

            $insert_user = array(
                'status' => $this->input->post('status'),
                'date_added' => date('Y-m-d')
            );

            $set_user_id = $this->add_user_model->insert_user($insert_user);

            if ($this->checkinsertedtodb($set_user_id)) {

                $insert_userdata = array(
                    'user_id' => $set_user_id,
                    'username' => ($this->input->post('username')) ? $this->input->post('username') : '',
                    'password' => '',
                    'firstname' => ($this->input->post('firstname')) ? $this->input->post('firstname') : '',
                    'lastname' => ($this->input->post('lastname')) ? $this->input->post('lastname') : '',
                    'email' => ($this->input->post('email')) ? $this->input->post('email') : '',
                    'image' => ($upload_data['file_name']) ? $upload_data['file_name'] : ''
                );

                $userdata_inserted = $this->add_user_model->insert_userdata($insert_userdata);

                if (($this->checkinsertedtodb($userdata_inserted)) && $this->db->trans_status()) {
                    
                    redirect('admin/user/users');
                    
                    $this->db->trans_complete();
                
                } else {

                    $this->db->trans_rollback();

                }
            }
            
        }

        if (isset($this->error['warning'])) {
            $data['error'] = $this->error['warning'];
        } else {
            $data['error'] = '';
        }

        $data['header'] = Modules::run('admin/common/header/index');
        $data['footer'] = Modules::run('admin/common/footer/index');

        $this->load->view('user/add_view', $data);

    }

    public function upload($field = 'userfile') {
        $users_dir = $this->input->post('username');
        $directory = FCPATH . 'uploads/users/' . $users_dir;

        if (isset($_FILES[$field]) && $_FILES[$field]['size'] > 0) {

            if (is_dir($directory)) {
                $this->error['warning'] = 'This ' . $directory . ' is all ready created!';
            }

            if (mkdir($directory)) {

                $config['upload_path'] = $directory . '/';
                $config['allowed_types'] = 'gif|jpg|png';
                $config['max_size'] = 3000;
                $config['max_width'] = 0;
                $config['max_height'] = 0;
                $config['overwrite'] = true;

                $this->upload->initialize($config);

                if (!$this->upload->do_upload($field)) {    
                    $this->error['warning'] = $this->upload->display_errors();
                }

            }

            return !$this->error;
        }     
    }

    public function checkinsertedtodb($inserted) {
        if (!$inserted) {
            $this->error['warning'] = 'Opps somthing has gone wrong could not insert data!';
        }

        return !$this->error;
    }
} 


Model

PHP Code:

<?php

class Add_user_model extends CI_Model {

    public function insert_user($data) {
        $this->db->set($data);
        $this->db->insert($this->db->dbprefix . 'user');
        return $this->db->insert_id();
    }

    public function insert_userdata($data) {
        $this->db->set($data);
        $this->db->insert($this->db->dbprefix . 'user_data');
    }

} 


Attached Files

  Add_user_model.php (Size: 342 bytes / Downloads: 123)
  Add.php (Size: 3.36 KB / Downloads: 97)

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