Codeigniter File Validation - php

Question

I would like to know with my code how am I able to make my file upload required. Because codeigniter form validation set rules is for post only.
I am unsure on how to make the file upload a requirement on form submit so it checks if file is required. And lets me submit form if file is upload or something along those lines
The callback works fine but required function cannot get to work with file upload.
Controller
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Store_add extends MX_Controller {
public function __construct() {
parent::__construct();
if (!$this->session->userdata('isLogged')) {
redirect('admin');
}
$this->load->model('admin/setting/model_store_add');
$this->load->model('admin/setting/model_store_get');
$this->lang->load('admin/setting/store_add', $this->settings->get('config_admin_language'));
}
public function index() {
// Title Language
$this->document->setTitle($this->lang->line('heading_title'));
$this->load->library('form_validation');
$this->form_validation->set_rules('config_image', 'Store Image', 'callback_do_upload_image');
if ($this->form_validation->run($this) == FALSE) { // "$this is for HMVC MY_Form_validation"
return $this->load->view('setting/store_add.tpl');
} else {
$store_id = $this->model_store_add->add_store();
$this->do_upload_image($store_id);
$this->session->set_flashdata('success', $this->lang->line('text_success'));
redirect('admin/setting/store');
}
}
public function do_upload_image($store_id) {
$config['upload_path'] = './image/upload/';
$config['allowed_types'] = $this->settings->get('config_file_ext_allowed');
$config['max_size'] = $this->settings->get('config_file_max_size');
$config['overwrite'] = $this->settings->get('config_file_overwrite');
$config['max_width'] = '*';
$config['max_height'] = '*';
$this->load->library('upload', $config);
$this->upload->initialize($config);
if (!$this->upload->do_upload('config_image')) {
$this->load->library('form_validation');
$this->form_validation->set_message('do_upload_image', $this->upload->display_errors('<b>config_image</b>' .' '));
return false;
} else {
if ($store_id) {
$this->model_store_add->add_config_image($store_id, $this->upload->data());
}
}
}
}
Sample View form
<div class="panel-body">
<?php $data = array('id' => 'form-store-add', 'role' => 'form', 'class' => 'form-horizontal' );?>
<?php echo form_open_multipart('admin/setting/store/add', $data);?>
<div class="row">
<div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
<?php echo validation_errors('<div class="alert alert-danger">', '</div>'); ?>
<?php echo $this->load->view('setting/store_flashdata.tpl');?>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label" for="input-image"><?php echo $entry_image; ?></label>
<div class="col-sm-10">
<input type="hidden" name="config_image" value="<?php echo set_value('config_image', '');?>">
<input type="file" name="config_image" size="20"/>
</div>
</div>
<?php echo form_close();?>
</div>

Answer 1

WORKING NOW: I did more research on http://php.net/ I have fixed form validation for file upload made sure it is required I added is_file_upload and also added set form validation message with a return of false
public function do_upload_image($store_id) {
$config['upload_path'] = './image/upload/';
$config['allowed_types'] = $this->settings->get('config_file_ext_allowed');
$config['max_size'] = $this->settings->get('config_file_max_size');
$config['overwrite'] = $this->settings->get('config_file_overwrite');
$config['max_width'] = '*';
$config['max_height'] = '*';
$this->load->library('upload', $config);
$this->upload->initialize($config);
if (is_uploaded_file($_FILES['config_image']['tmp_name'])) {
if (!$this->upload->do_upload('config_image')) {
$this->load->library('form_validation');
$this->form_validation->set_message('do_upload_image', $this->upload->display_errors('<b>config_image</b>' .' '));
return false;
} else {
if ($store_id) {
$this->model_store_add->add_config_image($store_id, $this->upload->data());
}
}
} else {
$this->form_validation->set_message('do_upload_image', 'Image Required');
return false;
}
}