baseline: 批次A-D 成果 + membership 半成品（测试红）

2026-09-11 23:11:35 +08:00
commit b3f3095d53
311 changed files with 40540 additions and 0 deletions
@@ -0,0 +1,110 @@
+"""商品中心 async ViewSets（多租户基类来自 apps.core.viewset）。"""
+
+from decimal import Decimal
+
+from asgiref.sync import sync_to_async
+from adrf.viewsets import ModelViewSet
+from rest_framework.decorators import action
+from rest_framework.response import Response
+
+from apps.core.viewset import BaseTenantViewSet, StandardAsyncPagination
+from .models import Category, Brand, Unit, Product, UnitConversion
+from .serializers import (
+    CategorySerializer,
+    BrandSerializer,
+    UnitSerializer,
+    ProductSerializer,
+)
+
+
+class CategoryViewSet(BaseTenantViewSet):
+    model = Category
+    serializer_class = CategorySerializer
+    search_fields = ["code", "name"]
+
+
+class BrandViewSet(BaseTenantViewSet):
+    model = Brand
+    serializer_class = BrandSerializer
+    search_fields = ["code", "name"]
+
+
+class UnitViewSet(BaseTenantViewSet):
+    model = Unit
+    serializer_class = UnitSerializer
+    search_fields = ["code", "name"]
+
+
+class ProductViewSet(BaseTenantViewSet):
+    model = Product
+    serializer_class = ProductSerializer
+    search_fields = ["code", "name", "barcode", "spec"]
+    quota_kind = "products"   # 套餐配额：商品数上限（批次 C1）
+
+    @action(detail=True, methods=["get"], url_path="units")
+    async def units(self, request, pk=None):
+        """商品的可用录入单位与换算价：GET /api/v1/catalog/products/<id>/units/
+
+        返回基本单位 + 全部 UnitConversion（rate 与按 rate 折算的销售价），
+        供开单页"选择录入单位"使用。
+        """
+        tenant = await self.get_tenant()
+        if tenant is None:
+            from rest_framework.exceptions import ValidationError
+            raise ValidationError({"tenant": "无法识别租户"})
+
+        def _load():
+            product = (
+                Product.objects.filter(tenant=tenant, pk=pk)
+                .select_related("base_unit")
+                .first()
+            )
+            if product is None:
+                return None
+            convs = list(
+                UnitConversion.objects.filter(product=product)
+                .select_related("unit")
+                .order_by("unit__code")
+            )
+            base_unit = product.base_unit
+            rows = []
+            if base_unit is not None:
+                rows.append({
+                    "unit_id": base_unit.id,
+                    "unit_code": base_unit.code,
+                    "unit_name": base_unit.name,
+                    "rate": "1",
+                    "is_base": True,
+                    "price": str(product.sale_price),
+                    "cost_price": str(product.cost_price),
+                })
+            for c in convs:
+                rows.append({
+                    "unit_id": c.unit_id,
+                    "unit_code": c.unit.code,
+                    "unit_name": c.unit.name,
+                    "rate": str(c.rate),
+                    "is_base": False,
+                    "price": str((product.sale_price * c.rate).quantize(Decimal("0.0001"))),
+                    "cost_price": str((product.cost_price * c.rate).quantize(Decimal("0.0001"))),
+                })
+            return {
+                "product_id": product.id,
+                "product_code": product.code,
+                "product_name": product.name,
+                "base_unit_id": base_unit.id if base_unit else None,
+                "base_unit_name": base_unit.name if base_unit else "",
+                "sale_price": str(product.sale_price),
+                "cost_price": str(product.cost_price),
+                "min_sale_price": str(product.min_sale_price or 0),
+                "tax_rate": str(product.tax_rate or 0),
+                "is_batch_managed": product.is_batch_managed,
+                "shelf_life_days": product.shelf_life_days,
+                "units": rows,
+            }
+
+        data = await sync_to_async(_load)()
+        if data is None:
+            from rest_framework.exceptions import NotFound
+            raise NotFound("product not found")
+        return Response(data)