More works on products

app/Traits/OrderServiceOptions.php

@@ -1,17 +1,20 @@
 <?php
 
-/**
- * Creates and returns the Service Options Model for an Order.
- */
 namespace App\Traits;
 
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Http\Request;
 
+/**
+ * Creates and returns the Service Options Model for an Order.
+ *
+ * Example
+ */
 trait OrderServiceOptions
 {
 	/*
-	protected $order_attributes = [
+	// Information required during the order process
+	protected array $order_attributes = [
 		'options.input'=>[
 			'request'=>'options.input',
 			'key'=>'column',
@@ -20,7 +23,7 @@ trait OrderServiceOptions
 		],
 	];
 
-	protected $order_model = NULL;
+	protected string $order_model = NULL;
 	*/
 
 	public function orderValidation(Request $request): ?Model

app/Traits/ProductDetails.php

@@ -16,6 +16,6 @@ trait ProductDetails
 	 */
 	public function getBillingIntervalStringAttribute(): string
 	{
-		return Invoice::billing_name(self::getBillingIntervalAttribute());
+		return Invoice::billing_name(static::getBillingIntervalAttribute());
 	}
 }