优化交易创建流程，客户管理新增折扣与来源字段及功能

web/queries/bill.gen.go

@@ -97,6 +97,11 @@ func newBill(db *gorm.DB, opts ...gen.DOOption) bill {
 				},
 			},
 		},
+		Discount: struct {
+			field.RelationField
+		}{
+			RelationField: field.NewRelation("User.Discount", "models.ProductDiscount"),
+		},
 		Roles: struct {
 			field.RelationField
 			Permissions struct {
@@ -329,6 +334,9 @@ type billBelongsToUser struct {
 			}
 		}
 	}
+	Discount struct {
+		field.RelationField
+	}
 	Roles struct {
 		field.RelationField
 		Permissions struct {