Laravel 5:级联软删除

Question

我有优惠和服务表.

服务是优惠的子女.到目前为止,我已经建立了软删除优惠的功能.我如何软删除附加服务？这是我的代码:

迁移优惠

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

移民服务

Schema::create('services', function(Blueprint $table) 
{
    $table->increments('id');
    $table->integer('offer_id')->unsigned();   
    ...
    $table->timestamps();
    $table->softDeletes();
});

Schema::table('services', function($table) 
{
    $table->foreign('offer_id')
          ->references('id')
          ->on('offers');
});

型号优惠

use SoftDeletes;
protected $dates = ['deleted_at'];

public function services() {
    return $this->hasMany('App\Service');
} 

模特服务

public function offer() {
    return $this->belongsTo('App\Offer');
} 

删除方法

public function destroy($id)
{
    $offer = Offer::find($id);
    $offer->delete();
}

谢谢你的帮助.

Answer 1

我已将此代码放在Offer模型中:

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

    static::deleting(function($offer) {
        $offer->services()->delete();
    });
}

并添加了缺失

use SoftDeletes;
protected $dates = ['deleted_at'];

在服务模型中.

Answer 2

你应该使用Eloquent事件.

Offers::deleted(function($offer) {
    $offer->services()->delete();
});

Offers::restored(function($offer) {
    $offer->services()->withTrashed()->restore();
});

Answer 3

如果你想在 Eloquent 模型中获得级联 softDeletes，我强烈建议使用这个库iatstuti/laravel-cascade-soft-deletes

作曲家

// get it with composer.
$ composer require iatstuti/laravel-cascade-soft-deletes="1.0.*"

快速示例

入门示例中提供的一个。

<?php

namespace App;

use App\Comment;
use Iatstuti\Database\Support\CascadeSoftDeletes;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Post extends Model
{
    use SoftDeletes, CascadeSoftDeletes;

    protected $cascadeDeletes = ['comments'];

    protected $dates = ['deleted_at'];

    public function comments()
    {
        return $this->hasMany(Comment::class);
    }
}