How to Automatically Delete Related Rows When Deleting a Model in Laravel Eloquent?

Automatically Deleting Related Rows in Laravel (Eloquent ORM)

In Laravel's Eloquent ORM, when deleting a record using $user->delete();, you may want to automatically delete related rows, such as $this->photo()->delete(). This can be achieved by utilizing the deleting event in your model class.

To set up the event handler, follow these steps:

Custom Model Event Handler

namespace App\Models;

use Illuminate\Foundation\Auth\User as Authenticatable;

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

    // this is a recommended way to declare event handlers
    protected static function booted()
    {
        static::deleting(function(User $user) { // before delete() method calls this
            $user->photos()->delete();
            // perform additional cleanup if necessary
        });
    }
}

By defining the deleting event handler, every time a User model is deleted, the related Photo models will also be automatically deleted. To ensure referential integrity, it's recommended to wrap the deletion process within a transaction.

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