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最低价格约束

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This commit is contained in:
luorijun
2026-04-07 13:51:19 +08:00
parent c684523cb8
commit fccb83c0e5
5 changed files with 33 additions and 3 deletions
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4
scripts/sql/init.sql
View File

@@ -757,6 +757,7 @@ create table product_sku (
code text not null unique,
name text not null,
price decimal not null,
price_min decimal not null,
status int not null default 1,
created_at timestamptz default current_timestamp,
updated_at timestamptz default current_timestamp,
@@ -773,7 +774,8 @@ comment on column product_sku.product_id is '产品ID';
comment on column product_sku.discount_id is '折扣ID';
comment on column product_sku.code is 'SKU 代码：格式为 key=value,key=value,...，其中，key:value 是 SKU 的属性，多个属性用逗号分隔';
comment on column product_sku.name is 'SKU 可读名称';
comment on column product_sku.price is '定价';
comment on column product_sku.price_min is '最低价格';
comment on column product_sku.min is '最小购买量';
comment on column product_sku.status is 'SKU状态：0-禁用，1-正常';
comment on column product_sku.created_at is '创建时间';
comment on column product_sku.updated_at is '更新时间';

1
web/models/product_sku.go
View File

@@ -14,6 +14,7 @@ type ProductSku struct {
Code string `json:"code" gorm:"column:code"` // SSKU 代码：格式为 key=value,key=value,...，其中，key:value 是 SKU 的属性，多个属性用逗号分隔
Name string `json:"name" gorm:"column:name"` // SKU 可读名称
Price decimal.Decimal `json:"price" gorm:"column:price"` // 定价
PriceMin decimal.Decimal `json:"price_min" gorm:"column:price_min"` // 最低价格
Status SkuStatus `json:"status" gorm:"column:status"` // SKU 状态：0-禁用，1-正常
Product *Product `json:"product,omitempty" gorm:"foreignKey:ProductID"`

6
web/queries/product_sku.gen.go
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@@ -36,6 +36,7 @@ func newProductSku(db *gorm.DB, opts ...gen.DOOption) productSku {
_productSku.Code = field.NewString(tableName, "code")
_productSku.Name = field.NewString(tableName, "name")
_productSku.Price = field.NewField(tableName, "price")
_productSku.PriceMin = field.NewField(tableName, "price_min")
_productSku.Status = field.NewInt32(tableName, "status")
_productSku.Product = productSkuBelongsToProduct{
db: db.Session(&gorm.Session{}),
@@ -67,6 +68,7 @@ type productSku struct {
Code field.String
Name field.String
Price field.Field
PriceMin field.Field
Status field.Int32
Product productSkuBelongsToProduct
@@ -96,6 +98,7 @@ func (p *productSku) updateTableName(table string) *productSku {
p.Code = field.NewString(table, "code")
p.Name = field.NewString(table, "name")
p.Price = field.NewField(table, "price")
p.PriceMin = field.NewField(table, "price_min")
p.Status = field.NewInt32(table, "status")
p.fillFieldMap()
@@ -113,7 +116,7 @@ func (p *productSku) GetFieldByName(fieldName string) (field.OrderExpr, bool) {
}
func (p *productSku) fillFieldMap() {
p.fieldMap = make(map[string]field.Expr, 12)
p.fieldMap = make(map[string]field.Expr, 13)
p.fieldMap["id"] = p.ID
p.fieldMap["created_at"] = p.CreatedAt
p.fieldMap["updated_at"] = p.UpdatedAt
@@ -123,6 +126,7 @@ func (p *productSku) fillFieldMap() {
p.fieldMap["code"] = p.Code
p.fieldMap["name"] = p.Name
p.fieldMap["price"] = p.Price
p.fieldMap["price_min"] = p.PriceMin
p.fieldMap["status"] = p.Status
}

17
web/services/product_sku.go
View File

@@ -32,7 +32,7 @@ func (s *productSkuService) Page(req *core.PageReq, productId *int32) (result []
return q.ProductSku.
Joins(q.ProductSku.Discount).
Where(do...).
Order(q.ProductSku.CreatedAt.Desc()).
Order(q.ProductSku.ID).
FindByPage(req.GetOffset(), req.GetLimit())
}
@@ -42,12 +42,18 @@ func (s *productSkuService) Create(create CreateProductSkuData) (err error) {
return core.NewBizErr("产品价格的格式不正确", err)
}
priceMin, err := decimal.NewFromString(create.PriceMin)
if err != nil {
return core.NewBizErr("产品最低价格的格式不正确", err)
}
return q.ProductSku.Create(&m.ProductSku{
ProductID: create.ProductID,
DiscountId: create.DiscountID,
Code: create.Code,
Name: create.Name,
Price: price,
PriceMin: priceMin,
})
}
@@ -57,6 +63,7 @@ type CreateProductSkuData struct {
Code string `json:"code"`
Name string `json:"name"`
Price string `json:"price"`
PriceMin string `json:"price_min"`
}
func (s *productSkuService) Update(update UpdateProductSkuData) (err error) {
@@ -69,6 +76,13 @@ func (s *productSkuService) Update(update UpdateProductSkuData) (err error) {
}
do = append(do, q.ProductSku.Price.Value(price))
}
if update.PriceMin != "" {
priceMin, err := decimal.NewFromString(update.PriceMin)
if err != nil {
return core.NewBizErr("产品最低价格的格式不正确", err)
}
do = append(do, q.ProductSku.PriceMin.Value(priceMin))
}
if update.DiscountID != nil {
do = append(do, q.ProductSku.DiscountId.Value(*update.DiscountID))
}
@@ -92,6 +106,7 @@ type UpdateProductSkuData struct {
Code *string `json:"code"`
Name *string `json:"name"`
Price *string `json:"price"`
PriceMin string `json:"price_min"`
Status *int32 `json:"status"`
}

8
web/services/resource.go
View File

@@ -196,6 +196,14 @@ func (s *resourceService) CalcPrice(skuCode string, count int32, user *m.User, c
couponApplied = discounted.Sub(coupon.Amount)
}
// 约束到最低价格
if discounted.Cmp(sku.PriceMin) < 0 {
discounted = sku.PriceMin.Copy()
}
if couponApplied.Cmp(sku.PriceMin) < 0 {
couponApplied = sku.PriceMin.Copy()
}
return sku, discount, coupon, discounted, couponApplied, nil
}