implements ArrayAccess for casting to type #189

app/Support/Units/Mass.php

@@ -1,13 +1,19 @@
 <?php
 
 namespace App\Support\Units;
+use Illuminate\Contracts\Support\Arrayable;
 
 /**
  * Class Mass
  * @package App\Support\Units
  */
-class Mass extends \PhpUnitsOfMeasure\PhysicalQuantity\Mass
+class Mass extends \PhpUnitsOfMeasure\PhysicalQuantity\Mass implements Arrayable
 {
+    /**
+     * The unit this is stored as
+     */
+    public const STORAGE_UNIT = 'lbs';
+
     /**
      * @return string
      */
@@ -15,17 +21,26 @@ class Mass extends \PhpUnitsOfMeasure\PhysicalQuantity\Mass
     {
         $unit = setting('general.weight_unit');
         $value = $this->toUnit($unit);
-        return (string)round($value, 2);
+        return (string) round($value, 2);
     }
 
     /**
      * For the HTTP Resource call
      */
-    public function toJson()
+    public function toObject()
     {
         return [
             'kg' => round($this->toUnit('kg'), 2),
-            'lgs' => round($this->toUnit('lbs'), 2),
+            'lbs' => round($this->toUnit('lbs'), 2),
         ];
     }
+
+    /**
+     * Get the instance as an array.
+     * @return array
+     */
+    public function toArray()
+    {
+        return round($this->toUnit(self::STORAGE_UNIT), 2);
+    }
 }