Laravel查询返回构建器而不是集合

I am new to laravel and trying to have a result. My code is this:

class GegonosController extends Controller
{
    public function index($gid = null, $cid = null, $nid = null)
    {
        if (is_null($cid) and is_null($nid) and is_null($gid)) {
            $gegon = Gegono::orderBy('created_at','desc')->get(); 
        }
        else{
            if(!is_null($gid)) {
                if($gid == 0) {
                    $gegon = Gegono::where('gegtype_id','>',1);
                }
                else{
                    $gegon = Gegono::where('gegtype_id', '=', $gid);   
                }
            }
            else {
                $gegon = Gegono::where('gegtype_id','>',0);
            }
            if (!is_null($cid)) {
                $gegon->where('city_id', '=',$cid);
            }
            if (!is_null($nid)) {
                $gegon->where('nomos_id','=', $nid);
            }        
            $gegon->orderBy('created_at','desc')->get(); 
        }                        
        $nomoi = \App\Nomoi::orderby('name')->get();
        return view('front.gegonota', compact('gegon','gid','cid','nid','nomoi'));
    }

In the first, if when all variables are null the result is a collection of all the records of the table. In all other, if (other cases) the result is a builder and I get no results,

It doesn't show any error but gives no results.

Any help would save me a lot of time.

Query Builder's get() method returns the collection of records. In your code, you just call get() method in the air, so it does nothing. You should assign it to a variable or use it in an expression.

Source: https://laravel.com/docs/5.4/eloquent#collections