Golang log.Error函數代碼示例

// new site init data
func NewSiteInitData(engine *xorm.Engine) {
	// default user
	user := &model.User{
		Name:      "admin",
		Nick:      "admin",
		Email:     "[email protected]",
		Url:       "#",
		AvatarUrl: utils.GravatarLink("[email protected]"),
		Profile:   "this is an administrator",
		Role:      model.USER_ROLE_ADMIN,
		Status:    model.USER_STATUS_ACTIVE,
	}
	user.Salt = utils.Md5String("123456789")[8:24]
	user.Password = utils.Sha256String("123456789" + user.Salt)
	if _, err := engine.Insert(user); err != nil {
		log.Error("NewSite | %s", err.Error())
		return
	}

	// default article
	article := &model.Article{
		Title:         "Welcome to Purine",
		Link:          "welcome-to-purine",
		Preview:       blogPreview,
		Body:          blogContent,
		TagString:     "blog",
		Hits:          1,
		Comments:      0,
		Status:        model.ARTICLE_STATUS_PUBLISH,
		CommentStatus: model.ARTICLE_COMMENT_OPEN,
		AuthorId:      user.Id,
	}
	if _, err := engine.Insert(article); err != nil {
		log.Error("NewSite | %s", err.Error())
		return
	}

	// default settings
	settings := make([]interface{}, 0)
	settings = append(settings, &model.Setting{"title", "Purine", 0})
	settings = append(settings, &model.Setting{"subtitle", "a simple blog engine", 0})
	settings = append(settings, &model.Setting{"desc", "a simple blog engine by golang", 0})
	settings = append(settings, &model.Setting{"keyword", "purine,blog,golang", 0})
	settings = append(settings, &model.Setting{"theme", "default", 0})
	settings = append(settings, &model.Setting{"baseurl", "http://localhost:9999/", 0})
	settings = append(settings, &model.Setting{"media_imageext", ".jpg,.jpeg,.png,.gif", 0})
	settings = append(settings, &model.Setting{"media_fileext", ".txt,.zip,.doc,.xls,.ppt,.pdf", 0})
	settings = append(settings, &model.Setting{"media_nameformat", ":hash", 0})
	settings = append(settings, &model.Setting{"media_maxsize", strconv.Itoa(2 * 1024 * 1024), 0})
	if _, err := engine.Insert(settings...); err != nil {
		log.Error("NewSite | %s", err.Error())
		return
	}
}

// save a comment,
// always insert new
func SaveComment(c *Comment) error {
	if _, err := vars.Db.Insert(c); err != nil {
		log.Error("Db|SaveComment|%s", err.Error())
		return err
	}
	return nil
}

// save setting with key, value and owner id
func SaveSetting(key, value string, uid int64) error {
	if _, err := vars.Db.Where("name = ?", key).Delete(new(Setting)); err != nil {
		log.Error("Db|SaveSetting|%s,%s,%d|%s", key, value, uid, err.Error())
		return err
	}
	s := &Setting{
		Name:   key,
		Value:  value,
		UserId: uid,
	}
	if _, err := vars.Db.Insert(s); err != nil {
		log.Error("Db|SaveSetting|%s,%s,%d|%s", key, value, uid, err.Error())
		return err
	}
	return nil
}

// get current theme
func GetCurrentTheme() (*Theme, error) {
	themeSetting, err := GetSettings("theme")
	if err != nil {
		return nil, err
	}

	t := new(Theme)
	t.Directory = themeSetting["theme"]
	t.IsCurrent = true
	tomlFile := path.Join("static", t.Directory, "theme.toml")
	if com.IsFile(tomlFile) {
		if _, err := toml.DecodeFile(tomlFile, t); err != nil {
			log.Error("Db|GetCurrentTheme|%s|%s", tomlFile, err.Error())
			return nil, err
		}
	}
	// fill data
	if t.Name == "" {
		t.Name = t.Directory
	}
	if t.Version == "" {
		t.Version = "0.0"
	}

	return t, nil
}

func saveTags(id int64, tagStr string) error {
	// delete old tags
	if _, err := vars.Db.Where("article_id = ?", id).Delete(new(Tag)); err != nil {
		log.Error("Db|SaveTags|%d,%s|%s", id, tagStr, err.Error())
		return err
	}
	// save new tags
	tags := strings.Split(strings.Replace(tagStr, "，", ",", -1), ",")
	for _, t := range tags {
		if _, err := vars.Db.Insert(&Tag{ArticleId: id, Tag: t}); err != nil {
			log.Error("Db|SaveTags|%d,%s|%s", id, t, err.Error())
			return err
		}
	}
	return nil
}

// check email's approved comment count
func CountApprovedCommentsByEmail(email string) int64 {
	c, err := vars.Db.Where("status = ? AND email = ?", COMMENT_STATUS_APPROVED, email).Count(new(Comment))
	if err != nil {
		log.Error("Db|CountApprovedCommentsByEmail|%s|%s", email, err.Error())
		return 0
	}
	return c
}

// save page.
// if page.Id, update page,
// or insert new page;
// return the saved page.
func SavePage(p *Page) (*Page, error) {
	if p.Id > 0 {
		if _, err := vars.Db.Where("id = ?", p.Id).
			Cols("title,link,update_time,body,topic,status,comment_status").
			Update(p); err != nil {
			log.Error("Db|SavePage|%d|%s", p.Id, err.Error())
			return nil, err
		}
	} else {
		if _, err := vars.Db.Insert(p); err != nil {
			log.Error("Db|SavePage|%d|%s", p.Id, err.Error())
			return nil, err
		}

	}
	return GetPageBy("id", p.Id)
}

// update user profile columns
func UpdateUser(u *User) error {
	if _, err := vars.Db.Cols("name,nick,email,url,profile,avatar_url").
		Where("id = ?", u.Id).Update(u); err != nil {
		log.Error("Db|UpdateUser|%d|%s", u.Id, err.Error())
		return err
	}
	return nil
}

// change comment status
func ChangeCommentStatus(cid int64, status string) (*Comment, error) {
	c := &Comment{Status: status}
	if _, err := vars.Db.Id(cid).Cols("status").Update(c); err != nil {
		log.Error("Db|ChangeCommentStatus|%d,%s|%s", cid, status, err.Error())
		return nil, err
	}
	return GetCommentBy("id", cid)
}

// get article by column and value
func GetArticleBy(col string, v interface{}) (*Article, error) {
	a := new(Article)
	if isIdColumn(col) {
		if _, err := vars.Db.Id(v).Get(a); err != nil {
			log.Error("Db|GetArticleBy|%s,%v|%s", col, v, err.Error())
			return nil, err
		}
	} else {
		if _, err := vars.Db.Where(col+" = ?", v).Get(a); err != nil {
			log.Error("Db|GetArticleBy|%s,%v|%s", col, v, err.Error())
			return nil, err
		}
	}
	if a.Id > 0 {
		return a, nil
	}
	return nil, nil
}

// list general articles,
// contains publish and draft articles
func ListGeneralArticle(page, size int64, order string) ([]*Article, error) {
	articles := make([]*Article, 0)
	if err := vars.Db.Where("status != ?", ARTICLE_STATUS_DELETE).
		Limit(int(size), int((page-1)*size)).OrderBy(order).Find(&articles); err != nil {
		log.Error("Db|ListGeneralArticle|%d,%d|%s|%s", page, size, order, err.Error())
		return nil, err
	}
	return articles, nil
}

// remove article by id
func RemoveArticle(id int64) error {
	a := new(Article)
	a.Status = ARTICLE_STATUS_DELETE
	if _, err := vars.Db.Where("id = ?", id).Cols("status").Update(a); err != nil {
		log.Error("Db|RemoveArticle|%d|%s", id, err.Error())
		return err
	}
	return nil
}

// list articles with one status
func ListStatusArticle(status string, page, size int64, order string) ([]*Article, error) {
	articles := make([]*Article, 0)
	if err := vars.Db.Where("status = ?", status).
		Limit(int(size), int((page-1)*size)).OrderBy(order).Find(&articles); err != nil {
		log.Error("Db|ListStatusArticle|%s|%d,%d|%s|%s", status, page, size, order, err.Error())
		return nil, err
	}
	return articles, nil
}

// get page by column and value
func GetPageBy(col string, v interface{}) (*Page, error) {
	p := new(Page)
	if isIdColumn(col) {
		if _, err := vars.Db.Id(v).Get(p); err != nil {
			log.Error("Db|GetPageBy|%s,%v|%s", col, v, err.Error())
			return nil, err
		}
	} else {
		if _, err := vars.Db.Where(col+" = ?", v).Get(p); err != nil {
			log.Error("Db|GetPageBy|%s,%v|%s", col, v, err.Error())
			return nil, err
		}
	}
	if p.Id > 0 {
		return p, nil
	}
	return nil, nil
}

// get a comment by column and value
func GetCommentBy(col string, v interface{}) (*Comment, error) {
	c := new(Comment)
	if isIdColumn(col) {
		if _, err := vars.Db.Id(v).Get(c); err != nil {
			log.Error("Db|GetCommentBy|%s,%v|%s", col, v, err.Error())
			return nil, err
		}
	} else {
		if _, err := vars.Db.Where(col+" = ?", v).Get(c); err != nil {
			log.Error("Db|GetCommentBy|%s,%v|%s", col, v, err.Error())
			return nil, err
		}
	}
	if c.Id > 0 {
		return c, nil
	}
	return nil, nil
}