ldc-mesbr-app/app/Models/Basket.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Support\Str;

/**
 * Basket
 *
 * @property            integer                                    $id                      Basket Id.
 * @property            string                                      $reference          Basket Reference.
 * @property            integer                                    $customer_id     Basket Cutomer Id.
 * @property-read   \Carbon\Carbon                      $created_at        Created date.
 * @property-read   \Carbon\Carbon                      $updated_at       Updated date.
 *
 * * RELATIONS
 * @property-read   \App\Models\Customer            $customer         The content owned by the Basket
 * @property-read   \App\Models\BasketsContent   $content            The customer that owns the Basket
 */
class Basket extends Model
{
    use HasFactory;

    /**
     * Fillable
     *
     * @var string[]
     */
    protected $fillable = [
        'reference',
        'customer_id',
        'campaign_id'
    ];

    /**
     * Get the content owned by the Basket
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function content(): HasMany
    {
        return $this->hasMany(BasketsContent::class);
    }

    /**
     * Get the customer that owns the Basket
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function customer(): BelongsTo
    {
        return $this->belongsTo(Customer::class);
    }

    /**
     * The "booted" method of the model.
     *
     * @return void
     */
    protected static function booted(): void
    {
        static::creating(function (Basket $basket) {
            $basket->reference = Str::ulid();
        });
    }
}