试图获取非对象Laravel 5.8错误的属性“标题”

如何解决试图获取非对象Laravel 5.8错误的属性“标题”

我是Laravel的新手，正在尝试创建我的第一个项目。在这个项目中，我制作了一个页面，用户可以在其中登录到他们的帐户并上传带有标题的新图像。然后，我尝试将带有标题的图像存储到数据库中，但突然出现此错误消息：

Trying to get property 'title' of non-object (View: F:\xampp\htdocs\frameworks\laravel 5.8\resources\views\profiles\index.blade.php)

这是我的PostsController.php：

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class PostsController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth');
    }

    public function create()
    {
        return view('posts.create');
    }
    public function store()
    {
        $data = request()->validate([
            'caption' => 'required','image' => ['required','image'],]);

        $imagePath = request('image')->store('uploads','public');

        auth()->user()->posts()->create([
            'caption' => $data['caption'],'image' => $imagePath,]);

        return redirect('/profile/' . auth()->user()->id);
    }
}

这是我用作表单的create.blade.php目录下的posts：

    @extends('layouts.app')

@section('content')
<div class="container">
    <form action="/p" enctype="multipart/form-data" method="post">
        @csrf
        <div class="row">
            <div class="col-8 offset-2">
                <div class="row">
                    <h1>Add New Post</h1>
                </div>
                <div class="form-group row">
                    <label for="caption" class="col-md-4 col-form-label">Post Caption</label>

                  
                    <input id="caption" 
                    type="text" 
                    class="form-control @error('caption') is-invalid @enderror" 
                    name="caption" 
                    value="{{ old('caption') }}" 
                    autocomplete="caption" autofocus>

                    @error('caption')
                        <span class="invalid-feedback" role="alert">
                            <strong>{{ $message }}</strong>
                        </span>
                    @enderror
                 
                </div>
                <div class="row">
                    <label for="image" class="col-md-4 col-form-label">Post Image</label> 
                    <input type="file" class="form-control-file" id="image" name="image">
                    @error('image')
                        <strong>{{ $message }}</strong>
                    @enderror
                </div>
                <div class="row pt-4">
                    <button class="btn btn-primary">Add New Post</button>
                </div>
            </div>
        </div>
    </form>
</div>
@endsection

这也是错误来自的index.blade.php：

@extends('layouts.app')

@section('content')
<div class="container">
    <div class="row">
        <div class="col-3 p-5">
            <img src="https://scontent-frx5-1.cdninstagram.com/v/t51.2885-19/s150x150/116422910_114925270146660_408650316921290541_n.jpg?_nc_ht=scontent-frx5-1.cdninstagram.com&_nc_ohc=dshpB2gOHkMAX-fg_cq&oh=f88bf9c6f5cb1d7ddf64bee889d70add&oe=5F60FB51" class="rounded-circle"></img>
        </div>
        <div class="col-9">
            <div class="d-flex justify-content-between align-items-baseline">
                <h1>{{ $user->username }}</h1>
                <a href="#">Add new post</a>
            </div>
            <div class="d-flex">
                <div class="pr-5"><strong>2</strong> posts</div>
                <div class="pr-5"><strong>77</strong> followers</div>
                <div class="pr-5"><strong>56</strong> followings</div>
            </div>
            <div class="pt-4 font-weight-bold">{{ $user->profile->title }}</div>
            <div>{{ $user->profile->description }}</div>
            <div><a href="#">{{ $user->profile->url ?? 'Not Available'}}</a></div>
        </div>
    </div>
    <div class="row">
        <div class="col-4">
            <img src="https://scontent-frx5-1.cdninstagram.com/v/t51.2885-15/e35/105520633_108718614121090_2184698351066702676_n.jpg?_nc_ht=scontent-frx5-1.cdninstagram.com&_nc_cat=110&_nc_ohc=U8VChpgH8FAAX_rx2ui&oh=c163882b70cfbe374cf2adfcaa593b6e&oe=5F5EF3DE" class="w-100"></img>
        </div>
        <div class="col-4">
            <img src="https://scontent-frx5-1.cdninstagram.com/v/t51.2885-15/e35/105520633_108718614121090_2184698351066702676_n.jpg?_nc_ht=scontent-frx5-1.cdninstagram.com&_nc_cat=110&_nc_ohc=U8VChpgH8FAAX_rx2ui&oh=c163882b70cfbe374cf2adfcaa593b6e&oe=5F5EF3DE" class="w-100"></img>
        </div>
        <div class="col-4">
            <img src="https://scontent-frx5-1.cdninstagram.com/v/t51.2885-15/e35/105520633_108718614121090_2184698351066702676_n.jpg?_nc_ht=scontent-frx5-1.cdninstagram.com&_nc_cat=110&_nc_ohc=U8VChpgH8FAAX_rx2ui&oh=c163882b70cfbe374cf2adfcaa593b6e&oe=5F5EF3DE" class="w-100"></img>
        </div>
    </div>
</div>
@endsection

我想知道这里出了什么问题，所以，如果您有任何想法或建议，请告诉我，我真的非常感谢！

注意：如果您希望我编写Laravel的其他文件代码供您查看，请发表评论，我会尽快为您更新。

更新＃1

User.php：

<?php

namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name','email','username','password',];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password','remember_token',];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'email_verified_at' => 'datetime',];

    public function posts()
    {
        return $this->hasMany(Post::class);
    }

    public function profile()
    {
        return $this->hasOne(Profile::class);
    }
}

Post.php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    protected $guarded = [];

    Public function user()
    {
        return $this->belongsTo(User::class);
    }
}

create_posts_table.php：

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreatePostsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('posts',function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->unsignedBigInteger('user_id');
            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
            $table->text('caption');
            $table->string('image');
            $table->timestamps();
            // $table->index('user_id');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('posts');
    }
}

更新＃2

Profile.php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Profile extends Model
{
    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

ProfilesController.php：

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\User;

class ProfilesController extends Controller
{
    public function index($user)
    {
        $user = User::findOrFail($user);

        return view('profiles.index',[
            'user' => $user,]);
    }
}

#UPDATE 3

以下是个人资料的外观：

解决方法

就像其他人在说的那样，$user->profile->title和$user->profile->description是 NULL ，为了解决这个问题，您需要在视图中执行以下操作。 / p>

<div class="pt-4 font-weight-bold">
    {{ $user->profile->title ?? 'Not Available' }}
</div>
<div>
    {{ $user->profile->description ?? 'Not Available' }}
</div>

或者您可以通过在命令提示符处执行以下操作，将一些数据手动添加到表中。

php artisan tinker
$profile = new \App\Profile();
$profile->title = 'Title'
$profile->description = 'Description'
$profile->user_id = [THE USER ID OF A CUSTOM USER];
$profile->save();

试图获取非对象Laravel 5.8错误的属性“标题”

如何解决试图获取非对象Laravel 5.8错误的属性“标题”

解决方法

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