使用 Laravel 5.2 进行软删除级联

Soft Delete Cascading with Laravel 5.2

提问by Juliatzin

I'm trying to implement soft deleting in Laravel.

我正在尝试在 Laravel 中实现软删除。

Here are my relationships

这是我的人际关系

Tournament ( hasMany ) CategoryTournament (hasOne) CategorySettings
Tournament ( hasMany ) CategoryTournament (belongsToMany) CategoryTournamentUser

So, I used this answerthat help me a lot

所以，我使用了这个对我有很大帮助的答案

Now, when I SoftDelete a Tournament, all CategoryTournaments related are also deleted.

现在，当我 SoftDelete 一个锦标赛时，所有相关的 CategoryTournaments 也被删除。

But then, I tried to apply it recursively, so I wrote the same code in CategoryTournament Model:

但是后来，我尝试递归应用它，所以我在 CategoryTournament 模型中编写了相同的代码：

static::deleting(function($categoryTournament) {
        $categoryTournament->settings()->delete();
        $categoryTournament->users()->delete();
    });

But this code is never ran. I checked that I have settings and user to delete, but none of them are soft deleted...

但是此代码从未运行过。我检查了我有要删除的设置和用户，但没有一个被软删除......

Did I miss something??? It should work!

我错过了什么？？？它应该工作！

EDIT:

编辑：

Now, I am trying to Soft Delete a User, it is just one more level:

现在，我正在尝试软删除用户，这只是一个级别：

User (HasMany) Tournament ( hasMany ) CategoryTournament (hasOne) CategorySettings

So now, when I soft Delete user, it delete his tournaments, but it doesn't delete anymore his CategoryTournaments, so this is not a config error.

所以现在，当我软删除用户时，它会删除他的锦标赛，但不会再删除他的 CategoryTournaments，所以这不是配置错误。

回答by Gordon Freeman

Inside your static bootmethod you have to iterate through your toManyrelations.

在您的static boot方法中，您必须遍历您的toMany关系。

F.a:

F A：

namespace App;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Tournament extends Model
{
  use SoftDeletes;

  public function categoryTournament() {
    return $this->hasMany(CategoryTournament::class);
  }

  protected static function boot() {
    parent::boot();

    static::deleting(function($tournament) {
      foreach ($tournament->categoryTournament()->get() as $ct) {
        $ct->delete();
      }
    });
  }
}

The other files should look like this:

其他文件应如下所示：

CategoryTournament.php

CategoryTournament.php

namespace App;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class CategoryTournament extends Model
{
  use SoftDeletes;

  public function tournament() {
    return $this->belongsTo(Tournament::class);
  }

  public function settings() {
    return $this->belongsTo(Settings::class);
  }

  protected static function boot() {
    parent::boot();

    static::deleting(function($categoryTournament) {
      var_dump('categoryTournament');
      $categoryTournament->settings()->delete();
    });
  }
}

Settings.php

Settings.php

namespace App;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Settings extends Model
{
    use SoftDeletes;

    public function categoryTournament() {
      return $this->hasOne(CategoryTournament::class);
    }

    protected static function boot() {
    parent::boot();

    static::deleting(function($settings) {
      var_dump('settings');
    });
  }
}

Migration

Migration

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

class CreateTables extends Migration
{
  /**
   * Run the migrations.
   *
   * @return void
   */
  public function up() {

    Schema::create('tournaments', function (Blueprint $table) {
      $table->increments('id');
      $table->timestamps();
      $table->softDeletes();
    });

    Schema::create('settings', function (Blueprint $table) {
      $table->increments('id');
      $table->timestamps();
      $table->softDeletes();
    });

    Schema::create('category_tournaments', function (Blueprint $table) {
      $table->increments('id');
      $table->integer('tournament_id')->unsigned();
      $table->integer('settings_id')->unsigned();
      $table->timestamps();
      $table->softDeletes();

      $table->foreign('tournament_id')->references('id')->on('tournaments');
      $table->foreign('settings_id')->references('id')->on('settings');
    });
  }

  /**
   * Reverse the migrations.
   *
   * @return void
   */
  public function down() {

    Schema::drop('category_tournaments');
    Schema::drop('settings');
    Schema::drop('tournaments');
  }
}