fix: update session_key fields in Cart, Order, and StockReservation models for consistency

tienda/migrations/0010_alter_cart_session_key_alter_order_session_key_and_more.py

@@ -0,0 +1,28 @@
+# Generated by Django 6.0.5 on 2026-05-26 08:25
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tienda', '0009_alter_cartitem_quantity_alter_orderitem_quantity_and_more'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='cart',
+            name='session_key',
+            field=models.CharField(blank=True, default='', max_length=40),
+        ),
+        migrations.AlterField(
+            model_name='order',
+            name='session_key',
+            field=models.CharField(blank=True, default='', max_length=40),
+        ),
+        migrations.AlterField(
+            model_name='stockreservation',
+            name='session_key',
+            field=models.CharField(blank=True, default='', max_length=40),
+        ),
+    ]

tienda/models.py

@@ -48,6 +48,7 @@ class VerificationCode(models.Model):
         default = VerificationModes.VERIFY_ACCOUNT   
     )
     
+    @staticmethod
     def generate(user: User, code_mode: str) -> VerificationCode:
         while True:
             code = "".join(random.choices(string.ascii_letters+string.digits, k=64))
@@ -163,7 +164,7 @@ class StockReservation(models.Model):
     ]
 
     user = models.ForeignKey(User, on_delete=models.CASCADE, null=True, blank=True, related_name="stock_reservations")
-    session_key = models.CharField(max_length=40, null=True, blank=True)
+    session_key = models.CharField(max_length=40, default="", blank=True)
     status = models.CharField(max_length=20, choices=STATUS_CHOICES, default=STATUS_ACTIVE)
     payment_method = models.CharField(max_length=20, choices=PAYMENT_CHOICES)
     expires_at = models.DateTimeField(db_index=True)
@@ -193,7 +194,7 @@ class StockReservationItem(models.Model):
 
 class Cart(models.Model):
     user = models.ForeignKey(User, on_delete=models.CASCADE, null=True, blank=True)
-    session_key = models.CharField(max_length=40, null=True, blank=True)
+    session_key = models.CharField(max_length=40, default="", blank=True)
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
     
@@ -258,7 +259,7 @@ class Order(models.Model):
 
     buyer = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, blank=True, related_name='orders')
     shipping_address = models.ForeignKey('ShippingAddress', on_delete=models.SET_NULL, null=True, blank=True, related_name='orders')
-    session_key = models.CharField(max_length=40, null=True, blank=True)
+    session_key = models.CharField(max_length=40, default="", blank=True)
     total = models.FloatField(default=0)
     status = models.CharField(max_length=20, choices=STATUS_CHOICES, default=STATUS_PAID)
     payment_method = models.CharField(max_length=20, choices=PAYMENT_CHOICES, default=PAYMENT_MANUAL)

tienda/pdf.py

@@ -17,15 +17,18 @@ class Recibo(FPDF):
 
 def generar_recibo(cliente: str, total: float, objetos: list, metodo_pago: str, transaction_code: str):
     pdf = Recibo()
-    font_path = "/fonts/Roboto-Regular.ttf"
     pdf.add_font('Roboto', '', '/fonts/Roboto-Regular.ttf')
     pdf.add_font('Roboto', 'B', '/fonts/Roboto-Bold.ttf')
     pdf.add_page()
     pdf.set_font('Roboto', size=12)
 
+    METODOS_MAP = {"stripe": "Stripe", "paypal": "PayPal", "manual": "Manual"}
+    metodo_mostrar = METODOS_MAP.get(metodo_pago, metodo_pago)
+
     pdf.cell(0, 10, f"Cliente: {cliente}", ln=True)
     pdf.cell(0, 10, f"ID de transaccion: {transaction_code}", ln=True)
-    pdf.cell(0, 10, f"")
+    pdf.cell(0, 10, f"Metodo de pago: {metodo_mostrar}", ln=True)
+    pdf.cell(0, 10, "")
 
     DATA = []
     DATA.append(