问题描述
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
@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();