ldc-boutique-cnc/app/Models/Promotion.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Promotion extends Model
{
    use HasFactory;

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'date_start' => 'datetime',
        'date_end' => 'datetime',
    ];

    public function products()
    {
        return $this->belongsToMany(Product::class);
    }

    public function discountType()
    {
        return $this->belongsTo(DiscountType::class, 'discount_type_id');
    }
}