Fix: Campo product a Many2One

tienda_ilusion/don_confiao/models.py

@@ -5,6 +5,30 @@ from django.core.exceptions import ValidationError
 from decimal import Decimal
 
 
+class MeasuringUnits(models.TextChoices):
+    UNIT = 'UNIT', _('Unit')
+
+
+class ProductCategory(models.Model):
+    name = models.CharField(max_length=100, unique=True)
+
+    def __str__(self):
+        return self.name
+
+
+class Product(models.Model):
+    name = models.CharField(max_length=100, unique=False)
+    price = models.DecimalField(max_digits=9, decimal_places=2)
+    measuring_unit = models.CharField(
+        max_length=20,
+        choices=MeasuringUnits.choices,
+        default=MeasuringUnits.UNIT
+    )
+    categories = models.ManyToManyField(ProductCategory)
+
+    def __str__(self):
+        return self.name
+
 
 class Sale(models.Model):
 
@@ -20,7 +44,7 @@ class Sale(models.Model):
 class SaleLine(models.Model):
 
     sale = models.ForeignKey(Sale, on_delete=models.CASCADE)
-    product = models.CharField(max_length=100)
+    product = models.ForeignKey(Product, on_delete=models.CASCADE)
     quantity = models.IntegerField(null=True)
     unit_price = models.DecimalField(max_digits=9, decimal_places=2)
     description = models.CharField(max_length=255, null=True, blank=True)
@@ -29,31 +53,6 @@ class SaleLine(models.Model):
         return f"{self.sale} - {self.product}"
 
 
-class MeasuringUnits(models.TextChoices):
-    UNIT = 'UNIT', _('Unit')
-
-
-class ProductCategory(models.Model):
-    name = models.CharField(max_length=100, unique=True)
-
-    def __str__(self):
-        return self.name
-
-
-class Product(models.Model):
-    name = models.CharField(max_length=100, unique=True)
-    price = models.DecimalField(max_digits=9, decimal_places=2)
-    measuring_unit = models.CharField(
-        max_length=20,
-        choices=MeasuringUnits.choices,
-        default=MeasuringUnits.UNIT
-    )
-    categories = models.ManyToManyField(ProductCategory)
-
-    def __str__(self):
-        return self.name
-
-
 class PaymentMethods(models.TextChoices):
     CASH = 'CASH', _('Cash')
     CONFIAR = 'CONFIAR', _('Confiar')
@@ -108,6 +107,7 @@ class ReconciliationJar(models.Model):
             self.payment_set.add(payment)
         self.is_valid = True
 
+        
 class Payment(models.Model):
     date_time = models.DateTimeField()
     type_payment = models.CharField(