Set default description for input field file on load

[TomPich]

Hello friends,

I stumbled upon a problem that is harder to solve that I thought.
On a template, the user can upload a file. The description of the file is used in the front as text for the download button.
The client asked me to have a default description for this field (Communiqué).
So I started to play with some hooks (in admin page), mainly addHookAfter InputfieldFile::processInputFile
This is where I am for now...

$wire->addHookAfter('InputfieldFile::processInputFile', function (HookEvent $event) {
	$field = $event->object;
	if ($field->attributes["name"] === "postFile") {
		// fill the file description with "Communiqué de presse
		// but I can’t figure out how to do that
	};
});

Any help?
Thanks!

Edited October 28 by TomPich
Correct typo

[Sanyaissues]

wire()->addHookBefore("InputfieldFile::renderItem", function(HookEvent $event) {
    $pagefile = $event->argumentsByName('pagefile');

    if ($pagefile->field->name === 'yourFileField') {
        $pagefile->description = 'Communiqué de presse';
        $pagefile->page->save($pagefile->field->name);
    }
});

Try this @TomPich. 

[TomPich]

Thanks!

It works perfectly. I didn’t know about the "pageFile" argument.
I wonder where I could have find this 😅

Edited October 29 by TomPich
Update

[Sanyaissues]

When you’re feeling lost and already halfway to uncharted waters, there’s only one man to call: The Captain Hook.