Merge pull request #4 from whitecube/fix-model-serialize

Fixed models serialization

src/Casts/TimezonedDatetime.php

@@ -5,6 +5,9 @@
 use Illuminate\Support\Facades\Date;
 use Whitecube\LaravelTimezones\Facades\Timezone;
 use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
+use Carbon\Carbon;
+use Illuminate\Support\Facades\Config;
+use Illuminate\Database\Eloquent\Model;
 
 class TimezonedDatetime implements CastsAttributes
 {
@@ -40,6 +43,10 @@ public function get($model, $key, $value, $attributes)
         if(!$value && $value !== 0) {
             return null;
         }
+
+        if ($this->isTimestamp($model, $key)) {
+            $value = Carbon::parse($value)->format($this->format ?? $model->getDateFormat());
+        }
 
         $original = Timezone::store($value, fn($raw, $tz) => $this->asDateTime($raw, $tz, $model));
 
@@ -61,10 +68,25 @@ public function set($model, $key, $value, $attributes)
             return null;
         }
 
+        if ($this->isTimestamp($model, $key) && is_string($value)) {
+            $value = Carbon::parse($value, Config::get('app.timezone'));
+        }
+
         $requested = Timezone::date($value, fn($raw, $tz) => $this->asDateTime($raw, $tz, $model));
 
         return Timezone::store($requested)->format($this->format ?? $model->getDateFormat());
     }
+
+    /**
+     * Check if the given key is part of the model's known timestamps
+     * @param Model $model 
+     * @param string $key 
+     * @return bool 
+     */
+    protected function isTimestamp(Model $model, string $key): bool
+    {
+        return $model->usesTimestamps() && in_array($key, $model->getDates());
+    }
 
     /**
      * Create a new date value from raw material
@@ -82,4 +104,4 @@ public function asDateTime($value, $timezone, $model)
             $timezone,
         );
     }
-}
+}

tests/CastTest.php

@@ -1,5 +1,7 @@
 <?php
 
+use Carbon\Carbon;
+use Illuminate\Support\Facades\Config;
 use Whitecube\LaravelTimezones\Casts\TimezonedDatetime;
 
 it('can access UTC database date with application timezone', function() {
@@ -138,4 +140,24 @@
 
     $output = $cast->get(fakeModel(), 'id', $input, []);
     expect($output->format('H'))->toEqual(4);
-});
+});
+
+test('a model with a timezone date cast can be json serialized', function () {
+    setupFacade();
+
+    Config::shouldReceive('get')
+        ->with('app.timezone')
+        ->andReturn('UTC');
+
+    $date = new Carbon('2022-12-15 09:00:00', 'UTC');
+    $model = fakeModelWithCast();
+
+    $model->test_at = $date;
+    $model->updated_at = $date;
+
+    expect($model->jsonSerialize())
+        ->toBe([
+            'test_at' => $date->toJSON(),
+            'updated_at' => $date->toJSON()
+        ]);
+});

tests/Pest.php

@@ -3,6 +3,7 @@
 use Whitecube\LaravelTimezones\Timezone;
 use Whitecube\LaravelTimezones\Facades\Timezone as Facade;
 use Illuminate\Database\Eloquent\Model;
+use Whitecube\LaravelTimezones\Casts\TimezonedDatetime;
 
 /*
 |--------------------------------------------------------------------------
@@ -60,3 +61,19 @@ public function getDateFormat()
         }
     };
 }
+
+function fakeModelWithCast()
+{
+    return new class() extends Model {
+        protected $casts = [
+            'test_at' => TimezonedDatetime::class,
+            'created_at' => TimezonedDatetime::class,
+            'updated_at' => TimezonedDatetime::class,
+        ];
+
+        public function getDateFormat()
+        {
+            return 'Y-m-d H:i:s';
+        }
+    };
+}