how to use custom function for uploading files in Codeigniter - php

Question

I made a custom function before working with framework, that I want to use again now. the problem occurs when I tried uploading image with my custom function. it says error undefined index : [the field_name].
most people uses CI library and CI upload function do_upload() but I want to use my own function because it also creates smaller image to be used as thumb.
I started working with CI 3 days ago, and still don't know how to change anything that can make $_FILES[] working.
the view :
<form action="path/to/controller/method" method="post" enctype="multipart/form-data">
<input type="file" name="fupload">
</form>
the controller :
public function __construct(){
parent::__construct();
$this->load->helper('fungsi_thumb'); // this is the custom function
$config['allowed_types'] = '*';
$this->load->library('upload',$config);
}
public function input_file(){
$data = array(
'location_file' => $_FILES['fupload']['tmp_name'],
'type_file' => $_FILES['fupload']['type'],
'name_file' => $_FILES['fupload']['name']
);
$this->load->model('input_model');
$this->input_model->put_file($data);
}
I already put my custom function file in application\helpers\. Should I show the custom function file and the model file too?
I already change the public $allowed_types = '*'; too
UPDATE
the Model
public function put_file($data){
//BUAT FILE
$lokasi_file = $data['location_file'];
$tipe_file = $data['type_file'];
$nama_file = $data['name_file'];
$acak = rand(1,99);
$nama_file_unik = $acak.$nama_file;
UploadImage($nama_file_unik); // this is my custom function
$sql="INSERT INTO produk(gambar)VALUES (?)";
$query=$this->db->query($sql,array($nama_file_unik));
if($query)
{
echo "BERHASIL";
}
else
{
echo "GAGAL";
}
}
UPDATE NEW
I finally able to use $_FILES, I need to load the library inside the controller Constructor.
now the new problem is there is no file uploaded even using do_upload() function inside my own custom made function
this is my custom made function
function UploadImage($fupload_name){
// SET DATA FILE NYA
$config['file_name'] = $fupload_name;
$config['upload_path'] = 'http://localhost/mobileapp/assets/gambar/';
var_dump($config['upload_path']);
//load the upload library
$CI =& get_instance();
$CI->load->library('upload',$config);
//Upload the file
if( !($CI->upload->do_upload('fupload'))){
$error = $CI->upload->display_errors();
}else{
$file_data = $CI->upload->data();
}
}
now as you can see above, I'm trying to change the file_name to a new randomly-generated name (done in the model) using $config['file_name'] = $fupload_name; and making a new object because obviously I need to do this to load library and use the do_upload() method.
but I still cannot use it. now I'm stuck again

Answer 1

Pass $_FILES array from controller to model function, add new file name in config array and use do_upload() directly like,
Controller Function:
public function input_file(){
$this->load->model('input_model');
$this->input_model->put_file($_FILES); // pass $_FILES Array
}
Model Function:
public function put_file($files){
$config['allowed_types'] = '*';
$acak = rand(1,99);
$config['file_name'] = $acak.$files['fupload']['name'];
$this->load->library('upload',$config);
$data = array(
'location_file' => $files['fupload']['tmp_name'],
'type_file' => $files['fupload']['type'],
'name_file' => $files['fupload']['name']
);
if (!$this->upload->do_upload('fupload')) { // pass field name here
$this->upload->display_errors('<p>', '</p>');
} else {
$sql="INSERT INTO produk(gambar)VALUES (?)";
$query=$this->db->query($sql,array($nama_file_unik));
if($query) {
echo "BERHASIL";
} else {
echo "GAGAL";
}
}
}

Answer 2

upload_path in configs must be absolute or relative path and not an url.
So you can something like this():
$config['upload_path'] = './uploads/';
OR this:
$config['upload_path'] = FCPATH . 'uploads/';
Note: FCPATH is absolute path of your index.php folder.