完善定价与套餐关联表结构

web/services/product_discount.go

@@ -0,0 +1,59 @@
+package services
+
+import (
+	"platform/web/core"
+	m "platform/web/models"
+	q "platform/web/queries"
+	"time"
+
+	"gorm.io/gen/field"
+)
+
+var ProductDiscount = &productDiscountService{}
+
+type productDiscountService struct{}
+
+func (s *productDiscountService) All() (result []*m.ProductDiscount, err error) {
+	return q.ProductDiscount.Find()
+}
+
+func (s *productDiscountService) Page(req *core.PageReq) (result []*m.ProductDiscount, count int64, err error) {
+	return q.ProductDiscount.FindByPage(req.GetOffset(), req.GetLimit())
+}
+
+func (s *productDiscountService) Create(data CreateProductDiscountData) (err error) {
+	return q.ProductDiscount.Create(&m.ProductDiscount{
+		Name:     data.Name,
+		Discount: data.Discount,
+	})
+}
+
+type CreateProductDiscountData struct {
+	Name     string `json:"name"`
+	Discount int32  `json:"discount" validate:"min=0,max=100"`
+}
+
+func (s *productDiscountService) Update(data UpdateProductDiscountData) (err error) {
+	do := make([]field.AssignExpr, 0)
+
+	if data.Name != nil {
+		do = append(do, q.ProductDiscount.Name.Value(*data.Name))
+	}
+	if data.Discount != nil {
+		do = append(do, q.ProductDiscount.Discount.Value(*data.Discount))
+	}
+
+	_, err = q.ProductDiscount.Where(q.ProductDiscount.ID.Eq(data.ID)).UpdateSimple(do...)
+	return err
+}
+
+type UpdateProductDiscountData struct {
+	ID       int32   `json:"id"`
+	Name     *string `json:"name"`
+	Discount *int32  `json:"discount" validate:"omitempty,min=0,max=100"`
+}
+
+func (s *productDiscountService) Delete(id int32) (err error) {
+	_, err = q.ProductDiscount.Where(q.ProductDiscount.ID.Eq(id)).UpdateColumn(q.ProductDiscount.DeletedAt, time.Now())
+	return
+}