feat: add book admin display fields

server/service/book/common.go

@@ -11,3 +11,15 @@ func paginate(info commonReq.PageInfo) func(db *gorm.DB) *gorm.DB { return (&inf
 func deleteByIDs[T any](ids []int) error {
 	return global.GVA_DB.Where("id in ?", ids).Delete(new(T)).Error
 }
+
+func createWithExplicitIsEnabled[T any](item *T, isEnabled bool) error {
+	return global.GVA_DB.Transaction(func(tx *gorm.DB) error {
+		if err := tx.Create(item).Error; err != nil {
+			return err
+		}
+		if isEnabled {
+			return nil
+		}
+		return tx.Model(item).Update("is_enabled", false).Error
+	})
+}