Generate UUID/ULID key?

[edalzell]

Hey there, I have an array of exercises

As you can see, every activity should have an id, and this should be generated when the exercises are created. I'm trying to make the objects readonly, is there a way to have an id auto-generated?

I see there's a DefaultValuesDataPipe but I don't see how to really use it to set default values, or generated values.

Any guidance would be much appreciated.

[edalzell]

This seems to work:

    public static function prepareForPipeline(Collection $properties): Collection
    {
        if (! $properties->get('id')) {
            $properties->put('id', Uuid::uuid4()->toString());
        }

        return $properties;
    }