最好为此重写delete方法。这样，您就可以在delete方法本身中合并DB事务。如果你使用事件方式，你将不得不覆盖你的删除方法调用与DB事务每次你调用它。

在你的用户模型中。

public function delete()
{
    \DB::beginTransaction();

     $this
        ->photo()
        ->delete()
    ;

    $result = parent::delete();

    \DB::commit();

    return $result;
}

在想要删除的模型上添加删除功能 定义模型的关系

例如在这个例子中:

/**
 * @return bool|null
 */
public function delete(): ?bool
{
    $this->profile()->delete();
    $this->userInterests()->delete();
    $this->userActivities()->delete();
    $this->lastLocation()->delete();

    return parent::delete();
}

用户模型中的关系为:

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

public function userInterests()
{
    return $this->hasMany(userInterest::class, 'user_id', 'id');
}

public function userActivities()
{
    return $this->hasMany(userActivity::class, 'user_id', 'id');
}

public function lastLocation()
{
    return $this->hasOne(LastLocation::class, 'user_id', 'id');
}

我相信这是Eloquent事件(http://laravel.com/docs/eloquent#model-events)的一个完美用例。你可以使用"deleting"事件来进行清理:

class User extends Eloquent { public function photos() { return $this->has_many('Photo'); } // this is a recommended way to declare event handlers public static function boot() { parent::boot(); static::deleting(function($user) { // before delete() method call this $user->photos()->delete(); // do the rest of the cleanup... }); } } You should probably also put the whole thing inside a transaction, to ensure the referential integrity..

注意:这个答案是为Laravel 3编写的。因此，在Laravel的最新版本中可能会或可能不会很好地工作。

在真正删除用户之前，您可以删除所有相关照片。

<?php

class User extends Eloquent
{

    public function photos()
    {
        return $this->has_many('Photo');
    }

    public function delete()
    {
        // delete all related photos 
        $this->photos()->delete();
        // as suggested by Dirk in comment,
        // it's an uglier alternative, but faster
        // Photo::where("user_id", $this->id)->delete()

        // delete the user
        return parent::delete();
    }
}

希望能有所帮助。

你可以使用这种方法作为替代。

将会发生什么，我们采取与用户表相关联的所有表和删除相关的数据使用循环

$tables = DB::select("
    SELECT
        TABLE_NAME,
        COLUMN_NAME,
        CONSTRAINT_NAME,
        REFERENCED_TABLE_NAME,
        REFERENCED_COLUMN_NAME
    FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
    WHERE REFERENCED_TABLE_NAME = 'users'
");

foreach($tables as $table){
    $table_name =  $table->TABLE_NAME;
    $column_name = $table->COLUMN_NAME;

    DB::delete("delete from $table_name where $column_name = ?", [$id]);
}

用户模型中的关系:

public function photos()
{
    return $this->hasMany('Photo');
}

删除相关记录:

$user = User::find($id);

// delete related   
$user->photos()->delete();

$user->delete();