API Resource Conditional and Inertia

I'm working with my first API Resource and having having trouble with using a conditional statement and can't figure out what I'm missing.

Here is the resource:

public function toArray($request)
    {
        return [
            'id' => $this->id,
            'name' => $this->name,
            $this->when(Auth::user()->type === 'sos', [
                'code' => $this->name,
                'ctds' => $this->ctds,
                'address' => $this->address,
                'city' => $this->city,
                'state' => $this->state,
                'zip' => $this->zip,
                'name' => $this->name,
                'phone' => $this->phone,
                'url' => $this->url,
                'deleted_at' => $this->deleted_at,
            ]),
        ];
    }
}

When I call the resource into a function below the condition works and I see the JSON file as expected:

class SfasController extends Controller
{
    public function index() {
        
        return SfaResource::collection(Sfa::query());
}

But when I try to pass it through an Inertia Route (below), the the property user.type returns null so the condition is never true.

class SfasController extends Controller
{
    public function index() {
        

      return Inertia::render('Sfas/Index', [
       'sfas' => SfaResource::collection(Sfa::query()
        ->orderBy('name')
        ->paginate(10)
        ->withQueryString()),
        'filters' => Request::all('search', 'trashed'),

    ]);

Here's the route:

Route::get('sfas', [SfasController::class, 'index'])
    ->name('sfas')
    ->middleware('auth');

I'm very new to this and sure it's some basic concept I've missed. Please let me know if more info would be helpful.