Combining multiple source columns

Pass an array to from (or generateSlugsFrom()) and the columns are concatenated using the slug separator before Str::slug runs.

With the attribute:

#[Sluggable(from: ['first_name', 'last_name'])]

Or via the trait:

SlugOptions::create()->generateSlugsFrom(['first_name', 'last_name']);

The result joins the columns with the separator before slugifying.

$author = Author::create(['first_name' => 'John', 'last_name' => 'Doe']);
$author->slug; // "john-doe"

For a slug derived from arbitrary logic (concatenations, related models, conditional values), use the trait and pass a closure to generateSlugsFrom(). See A closure as the source field.