feat(Payments): Generate cash payment with purchase.

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()