Filter out files without template

The CMS Questions
1

Is there a way to filter out files from a collection that have no template associated? Something like $files->hasTemplate(), returning a filtered collection?

2

This works:

$files->filter(function ($file) {
    return !empty($file->template());
});
3

This works too:

$files->filterBy('template', null);
4

But won’t that return all files without template?

5

I’d say yes, that should actually do the opposite of what you want.

But I think you can shorten your code:

$files->filter(function ($file) {
    return $file->template();
});
6

Sorry, I misunderstood your question. But it also works the way you want with:

$files->filterBy('template', true);

Or:

$files->filterBy('template', !null);
7

Cool! Is this documented?

8

I don’t think so.

I looked at the source code and files without template return null, which is a falsy value. When they have a template, the method returns a string which is a truthy value.