feat: added new fields

shop/models.py

@@ -6,6 +6,18 @@ from django.utils import timezone
 from django.utils.text import gettext_lazy as _
 
 
+class TimestampedModel(models.Model):
+    creation_date = models.DateTimeField(
+        auto_now_add=True, verbose_name=_("Fecha de creación")
+    )
+    last_modification_date = models.DateTimeField(
+        auto_now=True, verbose_name=_("Fecha de última modificación")
+    )
+
+    class Meta:
+        abstract = True
+
+
 class Tag(models.Model):
     name = models.CharField(max_length=16)
 
@@ -17,7 +29,7 @@ class Tag(models.Model):
         verbose_name_plural = _("etiquetas")
 
 
-class Product(models.Model):
+class Product(TimestampedModel):
     name = models.CharField(
         max_length=96,
         blank=False,
@@ -55,7 +67,7 @@ class Product(models.Model):
 
     @property
     def price(self):
-        return self.prices.last()
+        return self.prices.filter(current=True).first()
 
     class Meta:
         verbose_name = _("producto")
@@ -63,7 +75,7 @@ class Product(models.Model):
         ordering = ("-id",)
 
 
-class ProductPrice(models.Model):
+class ProductPrice(TimestampedModel):
     price = models.DecimalField(
         max_digits=11, decimal_places=2, verbose_name=_("Precio")
     )
@@ -79,6 +91,7 @@ class ProductPrice(models.Model):
         on_delete=models.PROTECT,
         verbose_name=_("Impuesto aplicable"),
     )
+    current = models.BooleanField(default=False, verbose_name=_('Es el precio actual'))
 
     def __str__(self):
         return f"{self.price} - {self.tax.code}"
@@ -93,7 +106,7 @@ class ProductPrice(models.Model):
         verbose_name_plural = _("precio de producto")
 
 
-class ProductBatch(models.Model):
+class ProductBatch(TimestampedModel):
     code = models.CharField(
         max_length=32, unique=True, db_index=True, verbose_name=_("Código")
     )
@@ -106,9 +119,6 @@ class ProductBatch(models.Model):
         default=Decimal("1"),
         verbose_name=_("Cantidad"),
     )
-    creation_date = models.DateTimeField(
-        auto_now_add=True, verbose_name=_("Fecha de creación")
-    )
     expiration_date = models.DateField(
         blank=True, null=True, verbose_name=_("Fecha de caducidad / consumo preferente")
     )
@@ -128,7 +138,7 @@ class ProductBatch(models.Model):
         verbose_name_plural = _("remesas de productos")
 
 
-class Tax(models.Model):
+class Tax(TimestampedModel):
     code = models.CharField(
         max_length=8, blank=False, unique=True, verbose_name=_("Código de impuesto")
     )
@@ -144,7 +154,7 @@ class Tax(models.Model):
         verbose_name_plural = _("impuestos")
 
 
-class Customer(models.Model):
+class Customer(TimestampedModel):
     vat_id = models.CharField(
         max_length=32,
         blank=False,
@@ -171,7 +181,7 @@ class Customer(models.Model):
         verbose_name_plural = _("clientes")
 
 
-class Provider(models.Model):
+class Provider(TimestampedModel):
     vat_id = models.CharField(
         max_length=32,
         blank=False,
@@ -203,7 +213,7 @@ class Provider(models.Model):
         verbose_name_plural = _("proveedores")
 
 
-class Brand(models.Model):
+class Brand(TimestampedModel):
     name = models.CharField(
         max_length=100, unique=True, blank=False, null=False, verbose_name=_("Nombre")
     )
@@ -213,7 +223,7 @@ class Brand(models.Model):
         verbose_name_plural = _("marcas")
 
 
-class OrderLine(models.Model):
+class OrderLine(TimestampedModel):
     order = models.ForeignKey(
         "shop.Order",
         on_delete=models.CASCADE,
@@ -274,7 +284,7 @@ class OrderLine(models.Model):
         verbose_name_plural = _("líneas de pedido")
 
 
-class Order(models.Model):
+class Order(TimestampedModel):
     class Statuses(models.TextChoices):
         STATUS_PENDING = "PEN", _("Pendiente de pago")
         STATUS_PAID = "PAI", _("Pagado")
@@ -292,13 +302,6 @@ class Order(models.Model):
         max_length=3, default=Statuses.STATUS_PENDING, verbose_name=_("Estado")
     )
 
-    creation_date = models.DateTimeField(
-        auto_now_add=True, verbose_name=_("Fecha de creación")
-    )
-    last_modification_date = models.DateTimeField(
-        auto_now=True, verbose_name=_("Fecha de última modificación")
-    )
-
     base_total = models.DecimalField(
         default=Decimal("0"),
         max_digits=13,