Fix GpsCheckin

rog/models.py

@@ -927,6 +927,9 @@ class GpsCheckin(models.Model):
     event_id = models.BigIntegerField(null=True, blank=True)
     team_id = models.BigIntegerField(null=True, blank=True)
     checkpoint_id = models.BigIntegerField(null=True, blank=True)
+    # データベースの実際のフィールドと一致させる
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
 
     class Meta:
         db_table = 'rog_gpscheckin'
@@ -935,14 +938,6 @@ class GpsCheckin(models.Model):
     def __str__(self):
         return f"GPS Checkin {self.id} - {self.zekken}"
 
-    def save(self, *args, **kwargs):
-        # 作成時・更新時のタイムスタンプを自動設定
-        from django.utils import timezone
-        if not self.create_at:
-            self.create_at = timezone.now()
-        self.update_at = timezone.now()
-        super().save(*args, **kwargs)
-
 class RogUser(models.Model):
     user=models.OneToOneField(CustomUser, on_delete=models.CASCADE)
     phone=models.CharField(_('Phone Number'), max_length=55)