parsing arguments with Codeigniter form_validation callback for file input - codeigniter

Question

I have a upload input and am trying to parse an argument to callback function via the CI form_validation library.
$this->form_validation->set_rules('orderfile', 'Order Form'," trim|callback_upload_check[$account_id]");
This calls:
public function upload_check($str, $id)
{
$errors = $this->do_upload($id);
if(isset($errors['error']))
{
$this->form_validation->set_message('upload_check', $errors['error']);
return FALSE;
}else{
return TRUE;
}
}
The Codeigniter Userguide states that when calling the function, the first argument is parsed as the second argument inside the function.
Neither arguments are parsed through. I found this post on the Codeigniter Forum
This seems to explain what is happening (variables are stripped). If i change the to <input type="text" /> the params work...
Is there anyway of getting around this problem?

Answer 1

you need to edit your code like this :
$this->form_validation->set_rules('orderfile', 'Order Form'," trim|callback_upload_check[".$account_id."]");
i also noticed that in your form_validation->set_rules you are not passing any value for id so in your function you should do :
public function upload_check($str, $id=0){..}

Answer 2

You need to change the function to:
public function upload_check($orderfile)
{
$errors = $this->do_upload($orderfile);
if(isset($errors['error']))
{
$this->form_validation->set_message('upload_check', $errors['error']);
return FALSE;
}else{
return TRUE;
}
}

Answer 3

I know this is an old question, but I was having the same problem, I finally realized the second parameter comes back in quotes, so if you pass an $id with the value 1, it actually comes back as "1".
So, to the original question, you need to callback the function like so:
$this->form_validation->set_rules('orderfile', 'Order Form'," trim|callback_upload_check[".$account_id."]");
And in your call back function:
public function upload_check($str, $id){
$actual_id=str_replace('"', "", $id)
}

Answer 4

$config =array(
array(
"field" => "userEmail",
"label" => ":userEmail:",
"rules" => "required|valid_email",
),
array(
"field" => "userPassword",
"label" => ":userPassword:",
"rules" => "required|min_length[8]",
),
);
$error_messages = array(
"required" => "{field} the field is required.",
"min_length" => "{field} the field value is so short",
"valid_email" => "{field} please valid email",
);
$this->form_validation->set_message($error_messages);
$this->form_validation->set_rules($config);
if($this->form_validation->run() == FALSE) {
$alert =preg_replace("/(\n)+/m", ' ', strip_tags(validation_errors()));
$explode =explode(':', $alert);
$arr =array();
for($i=1; $i < count($explode); $i+=2){
$y=$i;
$j =++$y;
$arr[$explode[$i]] = $explode[$j];
}
print json_encode($arr);
} else {
//process
}