File upload using JInput! possible?

Question

i use a html form on one of my articles, i am successful in getting the values from the form using JInput!

$input = JFactory::getApplication()->input;

But now i need to add a file upload input to the form :

<input type="file" name="upload">

How to upload and save files on the server using JInput!?

File upload with restrictions, allowing only specific file extentions.

Answer 1

In addition to @Bakual's answer, let's assume you a simple form like so:

<form name="upload" method="post" enctype="multipart/form-data">
    <input type="file" name="file_upload">
</form>

To upload the file once the submit button has been pressed, you can use this:

$input = JFactory::getApplication()->input;
$file  = $input->files->get('file_upload'); 

// Cleans the name of teh file by removing weird characters
$filename = JFile::makeSafe($file['name']); 

$src  = $file['tmp_name'];
$dest = JPATH_BASE . '/modules/mod_mymodule/' . $filename;

if (JFile::upload($src, $dest)) 
{
      // The file has successfully been uploaded :)
} 
else 
{
      // Oh crap, something happened. Run!
}

You will obviously need to change the path ($dest) to whatever suits your needs.

There is a load of validations you should perform when handling uploads, a lot of which can be found on the link you have been provided with already:

http://docs.joomla.org/How_to_use_the_filesystem_package

Answer 2

There are two tricky things people usually fall over when it comes to file uploads using JInput:

• Your form tag needs to contain enctype="multipart/form-data"
• The file array is retrieved with $input->files->get('upload');