fix: catalog sale lines not being created due to wrong field name and missing read_only config

- Changed test payload from 'saleline_set' to 'catalogsaleline_set'
- Removed extraneous fields 'payment_method' and 'catalog_sale' from test data
- Made 'catalog_sale' read_only in CatalogSaleLineSerializer to allow nested creation

tienda_ilusion/don_confiao/serializers.py

@@ -38,6 +38,7 @@ class SaleSerializer(serializers.ModelSerializer):
 class CatalogSaleLineSerializer(serializers.ModelSerializer):
     class Meta:
         model = CatalogSaleLine
+        read_only_fields = ["catalog_sale"]
         fields = [
             "id",
             "catalog_sale",
@@ -48,9 +49,7 @@ class CatalogSaleLineSerializer(serializers.ModelSerializer):
 
 
 class CatalogSaleSerializer(serializers.ModelSerializer):
-    catalogsaleline_set = CatalogSaleLineSerializer(
-        many=True, required=False
-    )
+    catalogsaleline_set = CatalogSaleLineSerializer(many=True, required=False)
     total = serializers.ReadOnlyField(source="get_total")
 
     class Meta:
@@ -67,9 +66,7 @@ class CatalogSaleSerializer(serializers.ModelSerializer):
         lines_data = validated_data.pop("catalogsaleline_set", [])
         catalog_sale = CatalogSale.objects.create(**validated_data)
         for line_data in lines_data:
-            CatalogSaleLine.objects.create(
-                catalog_sale=catalog_sale, **line_data
-            )
+            CatalogSaleLine.objects.create(catalog_sale=catalog_sale, **line_data)
         return catalog_sale