How to translate upload errors on CodeIgniter - codeigniter

Question

I am using CodeIgniter to upload some files through a form. I know how to translate "regular" form errors (required, valid_email, etc) but I don't know how to do it with file errors (file is not allowed, file is too big, etc).
Which keys should I use in
$this->form_validation->set_message('KEY', 'TRANSLATION');
?
Thanks

Answer 1

METHOD 1
By default, language files are typically stored in system/language directory. Alternately you can create a file called upload_lang.php inside your application/language folder and store them there.
$lang['upload_userfile_not_set'] = "Unable to find a post variable called userfile.";
$lang['upload_file_exceeds_limit'] = "The uploaded file exceeds the maximum allowed size in your PHP configuration file.";
$lang['upload_file_exceeds_form_limit'] = "The uploaded file exceeds the maximum size allowed by the submission form.";
$lang['upload_file_partial'] = "The file was only partially uploaded.";
$lang['upload_no_temp_directory'] = "The temporary folder is missing.";
$lang['upload_unable_to_write_file'] = "The file could not be written to disk.";
$lang['upload_stopped_by_extension'] = "The file upload was stopped by extension.";
$lang['upload_no_file_selected'] = "You did not select a file to upload.";
$lang['upload_invalid_filetype'] = "The filetype you are attempting to upload is not allowed.";
$lang['upload_invalid_filesize'] = "The file you are attempting to upload is larger than the permitted size.";
$lang['upload_invalid_dimensions'] = "The image you are attempting to upload exceedes the maximum height or width.";
$lang['upload_destination_error'] = "A problem was encountered while attempting to move the uploaded file to the final destination.";
$lang['upload_no_filepath'] = "The upload path does not appear to be valid.";
$lang['upload_no_file_types'] = "You have not specified any allowed file types.";
$lang['upload_bad_filename'] = "The file name you submitted already exists on the server.";
$lang['upload_not_writable'] = "The upload destination folder does not appear to be writable.";
METHOD 2
You can use Flashdata after upload process.
if ($this->upload->do_upload())
{
$this->session->set_flashdata('success', 'Yep! Upload complete');
redirect('go_back_home');
}
else
{
$this->session->set_flashdata('error', 'Uh, upload not complete! The problem is..'); // Manually check
redirect('go_back_form');
}
You can also check the problem with $this->upload->data(). This is a helper function that returns an array containing all of the data related to the file you uploaded. Here is the array prototype :
Array
(
[file_name] => mypic.jpg
[file_type] => image/jpeg
[file_path] => /path/to/your/upload/
[full_path] => /path/to/your/upload/jpg.jpg
[raw_name] => mypic
[orig_name] => mypic.jpg
[client_name] => mypic.jpg
[file_ext] => .jpg
[file_size] => 22.2
[is_image] => 1
[image_width] => 800
[image_height] => 600
[image_type] => jpeg
[image_size_str] => width="800" height="200"
)

Answer 2

Try this:
lang:your_translation_key
A real example:
$this->form_validation->set_rules('name', 'lang:web_name', 'required|trim|xss_clean|min_length[2]|max_length[100]');