Laravel:如何在一对一Eloquent关系中更新数据

我有两个表：

 1. User.
 2. Post.

在帖子表中，我保存了用户信息。因此，当我点击更新时，它应该加载特定的用户数据。它已经加载，但当我点击保存按钮更新保存时。它显示以下错误。

PostController.php中的FatalErrorException第78行：调用未定义函数App''Http''Controllers''fill（）

我想我的postUpdate控制器有问题。但我找不到问题。

这是我的用户模型：

<?php
namespace App;
use Illuminate'Foundation'Auth'User as Authenticatable;
class User extends Authenticatable
{
    protected $fillable = [
        'name', 'email', 'password',
    ];

    protected $hidden = [
        'password', 'remember_token',
    ];
     public function post()
    {
        return $this->hasOne('App'Post'); //Profile is your profile model
    }
}

这是我的邮政模型：

<?php
namespace App;
use Illuminate'Database'Eloquent'Model;
class Post extends Model
{
      protected $fillable = [
    'first_name', 'middle_name', 'last_name','gender',                            'dob','nationality','nid','email','phone_no','about_me'
];
     public function user()
    {
       return $this->belongsTo('App'User'); //Profile is your profile model
    }
}

这是我的帖子管理员：

<?php
namespace App'Http'Controllers;
use Illuminate'Http'Request;
use Illuminate'Http'Response;
use App'Http'Requests;
use App'Post;
use App'User;
use Illuminate'Support'Facades'Auth;
use Illuminate'Support'Facades'Storage;
use Illuminate'Support'Facades'File;
class PostController extends Controller
{

   public function getDashboard()
   {        
     $posts = Post::all();
          return view('dashboard',['posts'=>$posts]);  
    }

  public function postCreate(Request $request){
    $this->validate($request,[
      'first_name'=> 'required|max:120',
      'middle_name'=> 'required|max:120',
      'last_name' => 'required|max:120',
      'gender'=> 'required',
      'dob'=>'required',
      'nationality'=>'required',
      'nid'=>'required',
      'email' => 'required|email|unique:users',
      'phone_no'=>'required',
      'about_me'=>'required',
        ]);
    $post = new Post();
        $post->first_name = $request['first_name'];
        $post->middle_name = $request['middle_name'];
        $post->last_name = $request['last_name'];
        $post->gender = $request['gender'];
        $post->dob = $request['dob'];
        $post->nationality = $request['nationality'];
        $post->nid = $request['nid'];
        $post->email = $request['email'];
        $post->phone_no = $request['phone_no'];
        $post->about_me = $request['about_me'];        
        $message='There was an Error';
        if( $request->user()->post()->save($post)){
          $message = "Profile Created successfully";
        }
        return redirect()->route('dashboard')->with(['message' => $message]);
  }

    public function postUpdate(Request $request)
    {
          $this->validate($request,[
            'first_name'=> 'required|max:120',
            'middle_name'=> 'required|max:120',
            'last_name' => 'required|max:120',
            'gender'=> 'required',
            'dob'=>'required',
            'nationality'=>'required',
            'nid'=>'required',
            'email' => 'required|email|unique:users',
            'phone_no'=>'required',
            'about_me'=>'required',
            ]);

        $request->user()->post()->update(fill($request->all())) ;  
        return redirect()->route('dashboard');
       }

}