Function DecreaseUserQuota

model/user.go:690–705

(id int, quota int)

}

func DecreaseUserQuota(id int, quota int) (err error) {
	if quota < 0 {
		return errors.New("quota 不能为负数！")
	}
	gopool.Go(func() {
		err := cacheDecrUserQuota(id, int64(quota))
		if err != nil {
			common.SysError("failed to decrease user quota: " + err.Error())
		}
	})
	if common.BatchUpdateEnabled {
		addNewRecord(BatchUpdateTypeUserQuota, id, -quota)
		return nil
	}
	return decreaseUserQuota(id, quota)
}

func decreaseUserQuota(id int, quota int) (err error) {
	err = DB.Model(&User{}).Where("id = ?", id).Update("quota", gorm.Expr("quota - ?", quota)).Error