feat(backend): 入库每行新建独立产品发独立序列号(product 加生产日期/批次列)
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入库 Create/Update 改为对每条明细新建独立 product(createIndependentProduct, nextProductCode 自增 + uk_shop_code 唯一约束兜底),回填 product_id;不再按名称复用。 product 表加 production_date/batch_no。向后兼容:保留明细/库存快照列。 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YZ4DskSRKsSiheQonFtQvx
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@@ -85,6 +85,42 @@ func nextProductCode(tx *gorm.DB, shopID uint64) (string, error) {
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return fmt.Sprintf("P%03d", maxN+1), nil
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}
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// createIndependentProduct 为入库明细新建一个独立产品(特有产品/序列号),返回新 product。
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// "入库每行 = 一个特有产品"模型:每条明细建一个独立 product、发新序列号,不按名称复用。
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// 含 nextProductCode 自增 + 撞 uk_shop_code 唯一约束时重试。必须在事务内调用。
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func createIndependentProduct(tx *gorm.DB, shopID uint64, name, series, spec, batchNo string, prodDate *model.Date, price float64) (model.Product, error) {
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namePinyin, nameInitials := util.ToPinyin(name)
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var prod model.Product
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var err error
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for attempt := 0; attempt < 5; attempt++ {
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code, e := nextProductCode(tx, shopID)
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if e != nil {
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return model.Product{}, e
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}
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prod = model.Product{
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TenantBase: model.TenantBase{ShopID: shopID},
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PublicID: uuid.New().String(),
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Code: code,
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Name: name,
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Series: series,
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Spec: spec,
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BatchNo: batchNo,
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ProductionDate: prodDate,
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PurchasePrice: price,
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NamePinyin: namePinyin,
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NameInitials: nameInitials,
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}
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prod.ID = 0
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if err = tx.Create(&prod).Error; err == nil || !errors.Is(err, gorm.ErrDuplicatedKey) {
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break
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}
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}
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if err != nil {
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return model.Product{}, err
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}
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return prod, nil
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}
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// Create POST /api/v1/products
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func (h *ProductHandler) Create(c *gin.Context) {
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shopID := middleware.GetShopID(c)
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