add support for in DateTime casts

Author: rubenvanassche

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to `laravel-settings` will be documented in this file
 
+## 2.1.10 - 2021-08-17
+
+- add support for `null` in DateTime casts
+
 ## 2.1.9 - 2021-07-08
 
 - fix `empty` call not working when properties weren't loaded

src/SettingsCasts/DateTimeInterfaceCast.php

@@ -18,8 +18,12 @@ public function __construct(?string $type)
         $this->type = $type ?? DateTime::class;
     }
 
-    public function get($payload): DateTimeInterface
+    public function get($payload): ?DateTimeInterface
     {
+        if ($payload === null) {
+            return null;
+        }
+
         if ($this->type === Carbon::class) {
             return new Carbon($payload);
         }
@@ -42,10 +46,12 @@ public function get($payload): DateTimeInterface
     /**
      * @param DateTimeInterface $payload
      *
-     * @return string
+     * @return null|string
      */
-    public function set($payload): string
+    public function set($payload): ?string
     {
-        return $payload->format(DATE_ATOM);
+        return $payload !== null
+            ? $payload->format(DATE_ATOM)
+            : null;
     }
 }