优化单页打印

models/DocumentHistory.go

@@ -0,0 +1,181 @@
+package models
+
+import (
+	"time"
+
+	"github.com/astaxie/beego/orm"
+	"github.com/lifei6671/mindoc/conf"
+	"github.com/astaxie/beego"
+)
+
+type DocumentHistory struct {
+	HistoryId    int       `orm:"column(history_id);pk;auto;unique" json:"history_id"`
+	Action       string    `orm:"column(action);size(255)" json:"action"`
+	ActionName   string    `orm:"column(action_name);size(255)" json:"action_name"`
+	DocumentId   int       `orm:"column(document_id);type(int);index" json:"doc_id"`
+	DocumentName string    `orm:"column(document_name);size(500)" json:"doc_name"`
+	ParentId     int       `orm:"column(parent_id);type(int);index;default(0)" json:"parent_id"`
+	Markdown     string    `orm:"column(markdown);type(text);null" json:"markdown"`
+	Content      string    `orm:"column(content);type(text);null" json:"content"`
+	MemberId     int       `orm:"column(member_id);type(int)" json:"member_id"`
+	ModifyTime   time.Time `orm:"column(modify_time);type(datetime);auto_now" json:"modify_time"`
+	ModifyAt     int       `orm:"column(modify_at);type(int)" json:"-"`
+	Version      int64     `orm:"type(bigint);column(version)" json:"version"`
+}
+
+type DocumentHistorySimpleResult struct {
+	HistoryId  int       `json:"history_id"`
+	ActionName string    `json:"action_name"`
+	MemberId   int       `json:"member_id"`
+	Account    string    `json:"account"`
+	ModifyAt   int       `json:"modify_at"`
+	ModifyName string    `json:"modify_name"`
+	ModifyTime time.Time `json:"modify_time"`
+	Version    int64     `json:"version"`
+}
+
+// TableName 获取对应数据库表名.
+func (m *DocumentHistory) TableName() string {
+	return "document_history"
+}
+
+// TableEngine 获取数据使用的引擎.
+func (m *DocumentHistory) TableEngine() string {
+	return "INNODB"
+}
+
+func (m *DocumentHistory) TableNameWithPrefix() string {
+	return conf.GetDatabasePrefix() + m.TableName()
+}
+
+func NewDocumentHistory() *DocumentHistory {
+	return &DocumentHistory{}
+}
+func (m *DocumentHistory) Find(id int) (*DocumentHistory, error) {
+	o := orm.NewOrm()
+	err := o.QueryTable(m.TableNameWithPrefix()).Filter("history_id", id).One(m)
+
+	return m, err
+}
+
+//清空指定文档的历史.
+func (m *DocumentHistory) Clear(docId int) error {
+	o := orm.NewOrm()
+
+	_, err := o.Raw("DELETE md_document_history WHERE document_id = ?", docId).Exec()
+
+	return err
+}
+
+//删除历史.
+func (m *DocumentHistory) Delete(historyId, docId int) error {
+	o := orm.NewOrm()
+
+	_, err := o.QueryTable(m.TableNameWithPrefix()).Filter("history_id", historyId).Filter("document_id", docId).Delete()
+
+	return err
+}
+
+//恢复指定历史的文档.
+func (m *DocumentHistory) Restore(historyId, docId, uid int) error {
+	o := orm.NewOrm()
+
+	err := o.QueryTable(m.TableNameWithPrefix()).Filter("history_id", historyId).Filter("document_id", docId).One(m)
+
+	if err != nil {
+		return err
+	}
+	doc, err := NewDocument().Find(m.DocumentId)
+
+	if err != nil {
+		return err
+	}
+	history := NewDocumentHistory()
+	history.DocumentId = docId
+	history.Content = doc.Content
+	history.Markdown = doc.Markdown
+	history.DocumentName = doc.DocumentName
+	history.ModifyAt = uid
+	history.MemberId = doc.MemberId
+	history.ParentId = doc.ParentId
+	history.Version = time.Now().Unix()
+	history.Action = "restore"
+	history.ActionName = "恢复文档"
+
+	history.InsertOrUpdate()
+
+	doc.DocumentName = m.DocumentName
+	doc.Content = m.Content
+	doc.Markdown = m.Markdown
+	doc.Release = m.Content
+	doc.Version = time.Now().Unix()
+
+	_, err = o.Update(doc)
+
+	return err
+}
+
+func (m *DocumentHistory) InsertOrUpdate() (history *DocumentHistory, err error) {
+	o := orm.NewOrm()
+	history = m
+
+	if m.HistoryId > 0 {
+		_, err = o.Update(m)
+	} else {
+		_, err = o.Insert(m)
+		if err == nil {
+			if doc,e := NewDocument().Find(m.DocumentId);e == nil {
+				if book,e := NewBook().Find(doc.BookId);e == nil && book.HistoryCount > 0 {
+					//如果已存在的历史记录大于指定的记录，则清除旧记录
+					if c,e := o.QueryTable(m.TableNameWithPrefix()).Filter("document_id",doc.DocumentId).Count(); e == nil && c > int64(book.HistoryCount) {
+
+						count := c - int64(book.HistoryCount)
+						beego.Info("需要删除的历史文档数量：" ,count)
+						var lists []DocumentHistory
+
+						if _,e := o.QueryTable(m.TableNameWithPrefix()).Filter("document_id",doc.DocumentId).OrderBy("history_id").Limit(count).All(&lists,"history_id"); e == nil {
+							for _,d := range lists  {
+								o.Delete(&d)
+							}
+						}
+					}else{
+						beego.Info(book.HistoryCount)
+					}
+				}
+			}
+
+		}
+	}
+	return
+}
+
+//分页查询指定文档的历史.
+func (m *DocumentHistory) FindToPager(docId, pageIndex, pageSize int) (docs []*DocumentHistorySimpleResult, totalCount int, err error) {
+
+	o := orm.NewOrm()
+
+	offset := (pageIndex - 1) * pageSize
+
+	totalCount = 0
+
+	sql := `SELECT history.*,m1.account,m2.account as modify_name
+FROM md_document_history AS history
+LEFT JOIN md_members AS m1 ON history.member_id = m1.member_id
+LEFT JOIN md_members AS m2 ON history.modify_at = m2.member_id
+WHERE history.document_id = ? ORDER BY history.history_id DESC LIMIT ?,?;`
+
+	_, err = o.Raw(sql, docId, offset, pageSize).QueryRows(&docs)
+
+	if err != nil {
+		return
+	}
+	var count int64
+	count, err = o.QueryTable(m.TableNameWithPrefix()).Filter("document_id", docId).Count()
+
+	if err != nil {
+		return
+	}
+	totalCount = int(count)
+
+	return
+}