osb/app/Models/Product/Type.php

<?php

namespace App\Models\Product;

use Illuminate\Database\Eloquent\Model;

use App\Models\Product;
use App\Traits\{OrderServiceOptions,SiteID};

/**
 * @todo These tables have a base_cost/setup_cost/contract_term columns - how is that different to the supplier_tables?
 * @todo Ensure our terminology is consistent - we have a "cost", we "charge" clients, and we have a "price" which is not official charges nor a cost.
 */
abstract class Type extends Model
{
	use SiteID,OrderServiceOptions;

	/* RELATIONS */

	/**
	 * The product that sells this type
	 *
	 * @return \Illuminate\Database\Eloquent\Relations\MorphMany
	 */
	final public function products()
	{
		return $this->morphMany(Product::class, null,'model','model_id');
	}

	/**
	 * The offering supplied with this product
	 *
	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
	 */
	final public function supplied()
	{
		return $this->hasOne(static::SupplierModel,'id','supplier_item_id');
	}

	/* METHODs */

	final function normalizeBillingInterval(): int
	{
		return static::DefaultBill;
	}
}