Delete folder on extension update

Question

I've created a script.php which contains the following function:

protected function update400()
{
    jimport('joomla.filesystem.folder');
    jimport('joomla.filesystem.file');

    JFolder::delete(JPATH_ROOT . '/media/mod_MYMODULE/js');
}

This function is then called inside Joomla's predefined preflight(). The function is getting, called, however upon installation, I get the following error:

JInstaller: :Install: File does not exist C:\wamp\www\tmp\install_53de639f7a0b6\400\media\js

At first I thought this was because I was calling update400() from the preflight() function, so I tried calling it from the postflight() function instead, however this did not make any difference.

What I'm trying to figure out, is why it's looking in the tmp folder when I have specifically defined the path.

Does anyone know why this is happening?

Answer 1

I use JPATH_SITE within the update method which works fine for me.

I wouldn't use the preflight at all. It would delete the files even if the update fails, which is likely not what you want. postflight is the most appropriate but you need to check if it's an install, update or discover there.