Laravel-集合::delete方法不存在

Question

我正在尝试测试boot（）static:：deleting方法，该方法在通过Eloquent删除模型时应该触发。

tinkerApp\User:：find（6）中的命令-

如果我尝试使用App\User::其中（'id'，6）-

这是整个用户模型

 <?php

namespace App;

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

class User extends Authenticatable
{
    use Notifiable;

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

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

    public function tempUploads() {
        return $this->hasMany(TempUploads::class);
    }
    
    protected static function boot() {
        parent::boot();
        
        static::created(function ($user) {
            $user->profile()->create(['id' => $user->username, 'avatar' => '/storage/avatars/edit-profile.png']);
            mkdir(public_path() . "/storage/images/" . $user->username , 0755);

            // $data = [
            //  'user_id' => $user->username
            // ];
            // Mail::to($user->email)->send(new WelcomeMail($data));
        });

        static::deleting(function ($user) {
            $user->posts->delete();
            if ($user->profile->avatar != '/storage/avatars/edit-profile.png') {
                if ($user->profile->cover != NULL && $user->profile->cover != '') {
                    $oldAvatar = $_SERVER['DOCUMENT_ROOT'] . $user->profile->avatar;
                    $oldCover = $_SERVER['DOCUMENT_ROOT'] . $user->profile->cover;
                    if (is_file($oldAvatar) && is_file($oldCover)) {
                        unlink($oldAvatar);
                        unlink($oldCover);
                    } else {
                        die("Грешка при изтриване на стария файл. File does not exist in profile deleting method.");
                    }
                }
            }
            $user->profile->delete();
        });
    }

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

我已经花了几个小时在谷歌上寻找可能的解决方案，但还没有找到。

如何在触发引导删除方法时正确删除用户模型？




Answer 1

我认为它是这样工作的，更简单。

$user->posts()->each->delete();

Answer 2

您可以通过仅使用一个查询来删除所有帖子来优化lagbox的答案。在他的例子中，他正在对附加到用户的每个帖子执行删除查询。

对于单个delete查询，请直接使用关系的查询生成器：

$user->posts()->delete();

或者使用集合的pulk方法和单独的查询：

Post::where('id', $user->posts->pluck('id'))->delete();

Answer 3

在删除侦听器中，您试图删除其他内容，这是导致错误的集合。

$user-

// calling `delete()` on a Collection not a Model
// will throw the error you see
$user->posts->delete();

// iterate through the Collection
foreach ($user->posts as $post) {
    $post->delete();
}

附带说明：您不能对模型和查询批量执行任何操作，并且可以触发事件。所有Model事件都基于Model的单个实例。直接查询绕过Model。