feat(Payments): Generate cash payment with purchase.

tienda_ilusion/don_confiao/models.py

@@ -3,6 +3,7 @@ from django.utils.translation import gettext_lazy as _
 from django.core.exceptions import ValidationError
 
 from decimal import Decimal
+from datetime import datetime
 
 
 class Customer(models.Model):
@@ -118,7 +119,7 @@ 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(
@@ -144,3 +145,23 @@ class Payment(models.Model):
                 reconciliation_jar=None
             )
         )
+
+    @classmethod
+    def total_payment_from_sale(cls, payment_method, sale):
+        payment = cls()
+        payment.date_time = datetime.today()
+        payment.type_payment = payment_method
+        payment.amount = sale.get_total()
+        payment.clean()
+        payment.save()
+
+        payment_sale = PaymentSale()
+        payment_sale.payment = payment
+        payment_sale.sale = sale
+        payment_sale.clean()
+        payment_sale.save()
+
+
+class PaymentSale(models.Model):
+    payment = models.ForeignKey(Payment, on_delete=models.CASCADE)
+    sale = models.ForeignKey(Sale, on_delete=models.CASCADE)

tienda_ilusion/don_confiao/tests/test_purchase_with_payment.py

@@ -19,7 +19,7 @@ class TestPurchaseWithPayment(TestCase):
         quantity = 2
         unit_price = 2500
         total = 5000
-        response = self.client.post(
+        self.client.post(
             '/don_confiao/comprar',
             {
                 "customer": str(self.customer.id),
@@ -42,6 +42,10 @@ class TestPurchaseWithPayment(TestCase):
                 "payment_method": "CASH",
             }
         )
+
         purchases = Sale.objects.all()
         self.assertEqual(1, len(purchases))
         payments = Payment.objects.all()
+        self.assertEqual(1, len(payments))
+        self.assertEqual(total, payments[0].amount)
+        self.assertEqual('CASH', payments[0].type_payment)

tienda_ilusion/don_confiao/views.py

@@ -3,7 +3,7 @@ from django.http import HttpResponse, HttpResponseRedirect, JsonResponse
 from django.views.generic import ListView
 from django.db import transaction
 
-from .models import Sale, Product, ProductCategory, Payment
+from .models import Sale, Product, ProductCategory, Payment, PaymentMethods
 from .forms import ImportProductsForm, PurchaseForm, SaleLineFormSet, ReconciliationJarForm, PurchaseSummaryForm
 
 import csv
@@ -13,7 +13,6 @@ import io
 def index(request):
     return render(request, 'don_confiao/index.html')
 
-
 def buy(request):
     if request.method == "POST":
         sale_form = PurchaseForm(request.POST)
@@ -24,11 +23,18 @@ def buy(request):
             line_formset.is_valid(),
             sale_summary_form.is_valid()
         ])
+        payment_method = request.POST.get('payment_method')
+        valid_payment_methods = [PaymentMethods.CASH]
+        valid_payment_method = payment_method in valid_payment_methods
         if forms_are_valid:
             with transaction.atomic():
                 sale = sale_form.save()
                 line_formset.instance = sale
                 line_formset.save()
+                Payment.total_payment_from_sale(
+                    payment_method,
+                    sale
+                )
             return HttpResponseRedirect("compras")
     else:
         sale_form = PurchaseForm()