fix: minor adjustments

shop/models.py

@@ -310,7 +310,11 @@ class OrderLine(TimestampedModel):
 
 
 def create_order_code(*args, **kwargs):
-    return timezone.now().isoformat().replace('-', '').replace('T', '').replace(':', '').replace('.', '')[:-5]
+    return timezone.now().isoformat()\
+        .replace('-', '')\
+        .replace('T', '')\
+        .replace(':', '')\
+        .replace('.', '')[:-5]
 
 
 class Order(TimestampedModel):
@@ -318,6 +322,7 @@ class Order(TimestampedModel):
         STATUS_PENDING = 'PEN', _('pendiente de pago')
         STATUS_PAID = 'PAI', _('pagado')
         STATUS_RETURNED = 'RTN', _('devuelto')
+        STATUS_RETURNED_PARTIAL = 'PRT', _('devuelto parcialmente')
         STATUS_ERROR = 'ERR', _('Error')
 
     class ShippingStatuses(models.TextChoices):
@@ -516,6 +521,8 @@ class Payment(models.Model):
 
 class ShopSettings(SingletonModel):
     debug = models.BooleanField(default=True, verbose_name=_('Modo depuración'))
+
+    # Redsys
     merchant_code = models.CharField(
         max_length=9,
         blank=False,
@@ -528,8 +535,8 @@ class ShopSettings(SingletonModel):
         choices=CURRENCY_CODES,
         verbose_name=_('Código de moneda'),
     )  # 978 == EURO
-    terminal = models.CharField(max_length=8, verbose_name=_('Terminal'))
-    shared_secret = models.CharField(max_length=100, verbose_name=_('Clave de Redsys'))
+    terminal = models.CharField(max_length=8, verbose_name=_('terminal'))
+    shared_secret = models.CharField(max_length=100, verbose_name=_('clave de Redsys'))
     tpv_domain = models.URLField(max_length=128, blank=True, null=True, verbose_name=_('dominio del tpv'))
 
     class Meta: