Soft Deleting Parent & Child Models in Eloquent Laravel 5.php

<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class User extends Model
{
    use SoftDeletes;

    /**
     * The attributes that should be mutated to dates.
     *
     * @var array
     */
    protected $dates = ['deleted_at'];
  
   /**
   * Override parent boot and Call deleting event
   *
   * @return void
   */
   protected static function boot() 
    {
      parent::boot();

      static::deleting(function($users) {
         foreach ($users->posts()->get() as $post) {
            $post->delete();
         }
      });
    }
   /**
   * Define relationship with post model
   *
   * @return \Illuminate\Database\Eloquent\Relations\HasMany
   */
    public function posts()
    {
       $this->hasMany('App\Post');
    }
}