osb/app/Models/Supplier/Type.php

<?php

namespace App\Models\Supplier;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Arr;
use Leenooks\Traits\ScopeActive;

use App\Models\{Invoice,SupplierDetail};
use App\Traits\SiteID;

abstract class Type extends Model
{
	use SiteID,ScopeActive;

	/* RELATIONS */

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

	final public function supplier_detail()
	{
		return $this->belongsTo(SupplierDetail::class);
	}

	/* ATTRIBUTES */

	public function getBaseCostAttribute(?float $val): float
	{
		return $val ?: 0;
	}

	/**
	 * This will return the category of the product (eg: domain, hosting, etc) which is the basis for all
	 * other logic of these types.
	 *
	 * @return string
	 */
	final public function getCategoryAttribute(): string
	{
		return strtolower((new \ReflectionClass($this))->getShortName());
	}

	/**
	 * Return a friendly name for this product, used for display
	 *
	 * @return string
	 */
	final public function getCategoryNameAttribute(): string
	{
		return static::category_name;
	}

	final public function getContractTermAttribute(?int $val): int
	{
		return $val ?: 1;
	}

	public function getMinCostAttribute(): float
	{
		return $this->setup_cost+$this->base_cost*$this->contract_term;
	}

	public function getNameAttribute(): string
	{
		return $this->product_id ?: 'Supplier PID Unknown';
	}

	public function getNameLongAttribute(): string
	{
		return $this->product_desc ?: 'Supplier NAME Unknown';
	}

	public function getSetupCostAttribute(?float $val): float
	{
		return $val ?: 0;
	}

	public function getSupplierAttribute(): Model
	{
		return $this->supplier_detail->supplier;
	}
}