feat(api): implemented create sale as api endpoint.

requirements.txt

@@ -1 +1,2 @@
 Django==5.0.6
+djangorestframework

tienda_ilusion/don_confiao/api_views.py

@@ -0,0 +1,30 @@
+from rest_framework import viewsets
+from rest_framework.response import Response
+
+from .models import Sale, SaleLine, Customer, Product
+from .serializers import SaleSerializer
+
+
+class SaleViewSet(viewsets.ModelViewSet):
+    queryset = Sale.objects.all()
+    serializer_class = SaleSerializer
+
+    def create(self, request):
+        data = request.data
+        customer = Customer.objects.get(pk=data['customer'])
+        date = data['date']
+        lines = data['lines']
+        sale = Sale.objects.create(customer=customer, date=date)
+
+        for line in lines:
+            product = Product.objects.get(pk=line['product'])
+            quantity = line['quantity']
+            unit_price = line['unit_price']
+            SaleLine.objects.create(
+                sale=sale,
+                product=product,
+                quantity=quantity,
+                unit_price=unit_price
+            )
+
+        return Response({'message': 'Venta creada con exito'}, status=201)

tienda_ilusion/don_confiao/serializers.py

@@ -0,0 +1,17 @@
+from rest_framework import serializers
+
+from .models import Sale, SaleLine
+
+
+class SaleLineSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = SaleLine
+        fields = ['id', 'sale', 'product', 'unit_price', 'quantity']
+
+
+class SaleSerializer(serializers.ModelSerializer):
+    lines = SaleLineSerializer(many=True)
+
+    class Meta:
+        model = Sale
+        fields = ['id', 'customer', 'date', 'lines']

tienda_ilusion/don_confiao/tests/test_api.py

@@ -0,0 +1,32 @@
+import json
+from django.urls import reverse
+from rest_framework import status
+from rest_framework.test import APITestCase
+from ..models import Sale, Product, Customer
+
+
+class TestAPI(APITestCase):
+    def setUp(self):
+        self.product = Product.objects.create(
+            name='Panela',
+            price=5000,
+            measuring_unit='UNIT'
+        )
+        self.customer = Customer.objects.create(
+            name='Camilo'
+        )
+
+    def test_create_sale(self):
+        url = '/don_confiao/api/sales/'
+        data = {
+            'customer': self.customer.id,
+            'date': '2024-09-02',
+            'lines': [
+                {'product': self.product.id, 'quantity': 2, 'unit_price': 3000},
+                {'product': self.product.id, 'quantity': 3, 'unit_price': 5000}
+            ],
+        }
+        response = self.client.post(url, data, format='json')
+        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+        self.assertEqual(Sale.objects.count(), 1)
+        self.assertEqual(Sale.objects.all()[0].customer.name, self.customer.name)

tienda_ilusion/don_confiao/urls.py

@@ -1,6 +1,7 @@
 from django.urls import path
 
 from . import views
+from . import api_views
 
 app_name = 'don_confiao'
 urlpatterns = [
@@ -13,4 +14,5 @@ urlpatterns = [
     path("cuadrar_tarro", views.reconciliate_jar, name="reconciliate_jar"),
     path("cuadres", views.reconciliate_jar, name="reconciliations"),
     path("resumen_compra/<int:id>", views.purchase_summary, name="purchase_summary"),
+    path('api/sales/', api_views.SaleViewSet.as_view({'post': 'create'}), name='sale-create')
 ]

tienda_ilusion/tienda_ilusion/settings.py

@@ -38,6 +38,7 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'rest_framework',
     # 'don_confiao'
 ]