Laravel 5.2 理解“胖模型，瘦控制器”

胖模型，瘦控制器

php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Hash;
class User extends Model
{
    protected $fillable = ['name', 'email', 'password'];
    public function register($data)
    {
        $data['password'] = Hash::make($data['password']);
        return $this->create($data);
    }
    public function validate($data)
    {
        $rules = [
            'name' => 'required',
            'email' => 'required|email|unique:users',
            'password' => 'required|min:6',
        ];
        return validator($data, $rules);
    }
}

php
namespace App\Http\Controllers;
use App\User;
use Illuminate\Http\Request;
class UserController extends Controller
{
    public function register(Request $request)
    {
        $user = new User;
        $validator = $user->validate($request->all());
        if ($validator->fails()) {
            return response()->json(['errors' => $validator->errors()], 400);
        }
        $user->register($request->all());
        return response()->json(['message' => 'User registered successfully']);
    }
}