CodeIgniter Image Upload Function - php

Question

How do I upload an image when I'm trying to save other data along with it? When the form submits, it hits the save function:
function save() {
$this->save_data($_POST, $_FILES);
}
function save_data($post_data, $file_data) {
// if theres an image
if(!empty($file_data['image']['size'])) {
$path = '/images';
$this->upload_image($path);
}
}
function upload_image($path) {
// CI is looking for $_FILES super global but I want to pass that data in
$config['upload_path'] = $path;
$config['allowed_types'] = 'jpg|png';
$config['max_size'] = '100';
$config['max_width'] = '1024';
$config['max_height'] = '768';
$this->load->library('upload', $config);
$this->upload->data('image');
$this->upload->do_upload('image');
}
I can't figure out how to actually pass the file data to another function. All the examples I've seen shows the form submitting to a function that uploads the function right from it. I want to do the uploading from another function though.

Answer 1

if you are trying to check if file is actually beeing uploaded do following
//this is optional
if (empty($_FILES['userfile']['name'])) {
$this->form_validation->set_rules('userfile', 'picture', 'required');
}
if ($this->form_validation->run()) { //if using validation
//validated
if (!empty($_FILES['userfile']['name'])) {
//picture is beeing uploaded
$config['upload_path'] = './files/pcitures';
$config['allowed_types'] = 'gif|jpg|png|jpeg';
$config['encrypt_name'] = TRUE;
$this->load->library('upload', $config);
if (!$this->upload->do_upload('userfile')) {
//$error = array('error' => $this->upload->display_errors());
} else {
//no error, insert/update in DB
$tmp = $this->upload->data();
echo "<pre>";
var_dump($tmp);
echo "</pre>";
}
} else { ... }
}

Answer 2

My mistake was related to folder permissions.
For those of you that are looking to split the upload functionality into multiple functions:
Controller:
$save_data = $this->save_model->save_data($_POST, $_FILES);
Model:
function save_data($data, $file) {
// check if theres an image
if (!empty($file['image']['size'])) {
// where are you storing it
$path = './images';
// what are you naming it
$new_name = 'name_' . random_string('alnum', 16);
// start upload
$result = $this->upload_image($path, $new_name);
}
}
function upload_image($path, $new_name) {
// define parameters
$config['upload_path'] = $path;
$config['allowed_types'] = 'jpg|png';
$config['max_size'] = '1000';
$config['max_width'] = '1024';
$config['max_height'] = '768';
$config['file_name'] = $new_name;
$this->load->library('upload', $config);
// upload the image
if ($this->upload->do_upload('image')) {
// success
// pass back $this->upload->data() for info
} else {
// failed
// pass back $this->upload->display_errors() for info
}
}