Laravel Eloquent Cascading Delete

This package offers a simple trait that leverages the Eloquent delete event to recursively delete all specified relations for a given model.

Installation

Begin by installing this package through Composer. Edit your project's composer.json file to require fish/eloquent-cascade.

"require": {
  "fish/eloquent-cascade": "^1.0"
}

Next, update Composer from the Terminal:

composer update

Usage

1. Include the trait in a parent model and make the other models extend it:

    namespace App;
   
    use Illuminate\Database\Eloquent\Model;
    use Fish\Cascade\Cascade;
   
    class BaseModel extends Model
    {
        use Cascade;
    }
   

2. Add the relations you wish to delete to a protected $cascade array on the model. e.g:

    class User extends BaseModel
    {
   
        protected $cascade = ['author'];
   
        public function author() {
   
          return $this->hasOne(Author::class);
   
        }
    }
   
    class Author extends BaseModel
    {
   
        protected $cascade = ['posts'];
   
        public function user() {
   
          return $this->belongsTo(User::class);
   
        }
   
        public function posts() {
   
          return $this->hasMany(Post::class);
   
        }
   
    }
   
    class Post extends BaseModel
    {
   
      protected $cascade = ['comments'];
   
      public function comments() {
   
        return $this->hasMany(Comment::class);
   
      }
   
    }
   

If you are using a trait for polymorphic relations and want to add this relation to the $cascade array, override the protected getCascade method. Suppose you have a Locale trait:

   trait Locale {

    public function locale() {
        return $this->morphMany(Locale::class, 'translatable');
    }

    protected function getCascade() {
      return array_merge($this->cascade, ['locale']);
    }

   }