fix: evitando duplicado de productos en la importacion.

tienda_ilusion/don_confiao/example_products.csv

@@ -1,4 +1,4 @@
 "producto","unidad","precio","categorias"
-"Aceite de Coco Artesanal 500ml","Unidad", 50000,"Aceites&Alimentos"
-"Café 500ml","Unidad", 14000,"Cafes&Alimentos"
-"Café 250ml","Unidad", 7000,"Cafes&Alimentos"
+"Aceite","Unidad", 50000,"Aceites&Alimentos"
+"Café","Unidad", 14000,"Cafes&Alimentos"
+"Arroz","Unidad", 7000,"Cafes&Alimentos"

tienda_ilusion/don_confiao/example_products2.csv

@@ -0,0 +1,4 @@
+"producto","unidad","precio","categorias"
+"Aceite","Unidad", 50000,"Aceites&Alimentos"
+"Café","Unidad", 15000,"Cafes&Alimentos"
+"Arroz","Unidad", 6000,"Cafes&Alimentos"

tienda_ilusion/don_confiao/migrations/0011_alter_product_name.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0.6 on 2024-06-29 21:48
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('don_confiao', '0010_alter_productcategory_name'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='product',
+            name='name',
+            field=models.CharField(max_length=100, unique=True),
+        ),
+    ]

tienda_ilusion/don_confiao/models.py

@@ -27,7 +27,7 @@ class ProductCategory(models.Model):
         return self.name
 
 class Product(models.Model):
-    name = models.CharField(max_length=100)
+    name = models.CharField(max_length=100, unique=True)
     price = models.DecimalField(max_digits=9, decimal_places=2)
     measuring_unit = models.CharField(
         max_length=20,

tienda_ilusion/don_confiao/test_products.py

@@ -34,6 +34,13 @@ class TestProducts(TestCase):
             categories_on_csv
         )
 
+    def test_update_products(self):
+        self._import_csv()
+        first_products = self._get_products()
+        self._import_csv('example_products2.csv')
+        seconds_products = self._get_products()
+        self.assertCountEqual(first_products, seconds_products)
+
     def _get_products(self):
         products_response = self.client.get("/don_confiao/productos")
         return json.loads(products_response.content.decode('utf-8'))

tienda_ilusion/don_confiao/views.py

@@ -59,8 +59,10 @@ def handle_import_products_file(csv_file):
     data = io.StringIO(csv_file.read().decode('utf-8'))
     reader = csv.DictReader(data, quotechar='"')
     for row in reader:
-        product = Product()
-        product.name = row['producto']
+        product, _ = Product.objects.get_or_create(
+            name=row['producto'],
+            defaults={'price': row['precio']}
+        )
         product.price = row['precio']
         product.measuring_unit = row['unidad']
         product.save()