Im using the django field like this:

```
import uuid   
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)

```

A typical id would look like this:

```
6abbde08-99b1-42c7-8bd2-3ec92a4b67b9

```

Is it possible to make the id shorter, to something like **99b1** ?