mirror of https://github.com/mindoc-org/mindoc.git
813 lines
20 KiB
Go
813 lines
20 KiB
Go
package controllers
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import (
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"os"
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"time"
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"regexp"
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"strconv"
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"strings"
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"net/http"
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"path/filepath"
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"encoding/json"
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"html/template"
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"container/list"
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"github.com/lifei6671/godoc/models"
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"github.com/lifei6671/godoc/conf"
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"github.com/astaxie/beego"
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"github.com/astaxie/beego/orm"
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"github.com/lifei6671/godoc/utils"
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)
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//DocumentController struct.
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type DocumentController struct {
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BaseController
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}
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//判断用户是否可以阅读文档.
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func isReadable (identify,token string,c *DocumentController) *models.BookResult {
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book, err := models.NewBook().FindByFieldFirst("identify", identify)
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if err != nil {
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beego.Error(err)
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c.Abort("500")
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}
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if c.Member != nil && c.Member.Role == conf.MemberSuperRole {
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bookResult := book.ToBookResult()
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return bookResult
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}
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//如果文档是私有的
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if book.PrivatelyOwned == 1 {
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is_ok := false
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if c.Member != nil {
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_, err := models.NewRelationship().FindForRoleId(book.BookId, c.Member.MemberId)
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if err == nil {
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is_ok = true
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}
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}
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if book.PrivateToken != "" && !is_ok {
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//如果有访问的Token，并且该项目设置了访问Token，并且和用户提供的相匹配，则记录到Session中.
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//如果用户未提供Token且用户登录了，则判断用户是否参与了该项目.
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//如果用户未登录，则从Session中读取Token.
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if token != "" && strings.EqualFold(token, book.PrivateToken) {
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c.SetSession(identify, token)
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} else if token, ok := c.GetSession(identify).(string); !ok || !strings.EqualFold(token, book.PrivateToken) {
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c.Abort("403")
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}
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} else if !is_ok {
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c.Abort("403")
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}
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}
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bookResult := book.ToBookResult()
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if c.Member != nil {
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rel, err := models.NewRelationship().FindByBookIdAndMemberId(bookResult.BookId, c.Member.MemberId)
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if err == nil {
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bookResult.MemberId = rel.MemberId
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bookResult.RoleId = rel.RoleId
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bookResult.RelationshipId = rel.RelationshipId
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}
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}
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//判断是否需要显示评论框
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if bookResult.CommentStatus == "closed" {
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bookResult.IsDisplayComment = false
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} else if bookResult.CommentStatus == "open" {
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bookResult.IsDisplayComment = true
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} else if bookResult.CommentStatus == "group_only" {
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bookResult.IsDisplayComment = bookResult.RelationshipId > 0
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} else if bookResult.CommentStatus == "registered_only" {
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bookResult.IsDisplayComment = true
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}
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return bookResult
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}
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//文档首页.
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func (c *DocumentController) Index() {
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c.Prepare()
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identify := c.Ctx.Input.Param(":key")
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token := c.GetString("token")
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if identify == "" {
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c.Abort("404")
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}
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//如果没有开启你们访问则跳转到登录
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if !c.EnableAnonymous && c.Member == nil {
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c.Redirect(beego.URLFor("AccountController.Login"),302)
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return
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}
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bookResult := isReadable(identify,token,c)
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c.TplName = "document/" + bookResult.Theme + "_read.tpl"
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tree,err := models.NewDocument().CreateDocumentTreeForHtml(bookResult.BookId,0)
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if err != nil {
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beego.Error(err)
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c.Abort("500")
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}
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c.Data["Model"] = bookResult
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c.Data["Result"] = template.HTML(tree)
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c.Data["Title"] = "概要"
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c.Data["Content"] = bookResult.Description
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}
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//阅读文档.
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func (c *DocumentController) Read() {
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c.Prepare()
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identify := c.Ctx.Input.Param(":key")
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token := c.GetString("token")
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id := c.GetString(":id")
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if identify == "" || id == ""{
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c.Abort("404")
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}
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//如果没有开启你们访问则跳转到登录
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if !c.EnableAnonymous && c.Member == nil {
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c.Redirect(beego.URLFor("AccountController.Login"),302)
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return
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}
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bookResult := isReadable(identify,token,c)
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c.TplName = "document/" + bookResult.Theme + "_read.tpl"
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doc := models.NewDocument()
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if doc_id,err := strconv.Atoi(id);err == nil {
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doc,err = doc.Find(doc_id)
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if err != nil {
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beego.Error(err)
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c.Abort("500")
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}
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}else{
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doc,err = doc.FindByFieldFirst("identify",id)
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if err != nil {
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beego.Error(err)
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c.Abort("500")
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}
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}
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if doc.BookId != bookResult.BookId {
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c.Abort("403")
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}
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if c.IsAjax() {
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var data struct{
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DocTitle string `json:"doc_title"`
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Body string `json:"body"`
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Title string `json:"title"`
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}
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data.DocTitle = doc.DocumentName
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data.Body = doc.Release
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data.Title = doc.DocumentName + " - Powered by MinDoc"
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c.JsonResult(0,"ok",data)
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}
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tree,err := models.NewDocument().CreateDocumentTreeForHtml(bookResult.BookId,doc.DocumentId)
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if err != nil {
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beego.Error(err)
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c.Abort("500")
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}
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c.Data["Model"] = bookResult
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c.Data["Result"] = template.HTML(tree)
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c.Data["Title"] = doc.DocumentName
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c.Data["Content"] = template.HTML(doc.Release)
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}
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//编辑文档.
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func (c *DocumentController) Edit() {
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c.Prepare()
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identify := c.Ctx.Input.Param(":key")
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if identify == "" {
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c.Abort("404")
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}
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bookResult := models.NewBookResult()
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var err error
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//如果是超级管理者，则不判断权限
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if c.Member.Role == conf.MemberSuperRole {
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book,err := models.NewBook().FindByFieldFirst("identify",identify)
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if err != nil {
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c.JsonResult(6002, "项目不存在或权限不足")
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}
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bookResult = book.ToBookResult()
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}else {
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bookResult, err = models.NewBookResult().FindByIdentify(identify, c.Member.MemberId)
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if err != nil {
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beego.Error("DocumentController.Edit => ", err)
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c.Abort("403")
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}
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if bookResult.RoleId == conf.BookObserver {
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c.JsonResult(6002, "项目不存在或权限不足")
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}
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}
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//根据不同编辑器类型加载编辑器
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if bookResult.Editor == "markdown" {
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c.TplName = "document/markdown_edit_template.tpl"
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}else if bookResult.Editor == "html"{
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c.TplName = "document/html_edit_template.tpl"
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}else{
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c.TplName = "document/" + bookResult.Editor + "_edit_template.tpl"
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}
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c.Data["Model"] = bookResult
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r,_ := json.Marshal(bookResult)
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c.Data["ModelResult"] = template.JS(string(r))
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c.Data["Result"] = template.JS("[]")
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trees ,err := models.NewDocument().FindDocumentTree(bookResult.BookId)
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if err != nil {
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beego.Error("FindDocumentTree => ", err)
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}else{
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if len(trees) > 0 {
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if jtree, err := json.Marshal(trees); err == nil {
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c.Data["Result"] = template.JS(string(jtree))
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}
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}else{
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c.Data["Result"] = template.JS("[]")
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}
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}
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c.Data["BaiDuMapKey"] = beego.AppConfig.DefaultString("baidumapkey","")
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}
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//创建一个文档.
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func (c *DocumentController) Create() {
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identify := c.GetString("identify")
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doc_identify := c.GetString("doc_identify")
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doc_name := c.GetString("doc_name")
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parent_id,_ := c.GetInt("parent_id",0)
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doc_id,_ := c.GetInt("doc_id",0)
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if identify == "" {
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c.JsonResult(6001,"参数错误")
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}
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if doc_name == "" {
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c.JsonResult(6004,"文档名称不能为空")
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}
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if doc_identify != "" {
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if ok, err := regexp.MatchString(`^[a-z]+[a-zA-Z0-9_\-]*$`, doc_identify); !ok || err != nil {
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c.JsonResult(6003, "文档标识只能包含小写字母、数字，以及“-”和“_”符号,并且只能小写字母开头")
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}
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d,_ := models.NewDocument().FindByFieldFirst("identify",doc_identify);
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if d.DocumentId > 0 && d.DocumentId != doc_id{
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c.JsonResult(6006,"文档标识已被使用")
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}
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}
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book_id := 0
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//如果是超级管理员则不判断权限
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if c.Member.Role == conf.MemberSuperRole {
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book,err := models.NewBook().FindByFieldFirst("identify",identify)
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if err != nil {
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beego.Error(err)
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c.JsonResult(6002, "项目不存在或权限不足")
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}
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book_id = book.BookId
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}else{
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bookResult, err := models.NewBookResult().FindByIdentify(identify, c.Member.MemberId)
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if err != nil || bookResult.RoleId == conf.BookObserver {
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beego.Error("FindByIdentify => ", err)
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c.JsonResult(6002, "项目不存在或权限不足")
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}
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book_id = bookResult.BookId
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}
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if parent_id > 0 {
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doc,err := models.NewDocument().Find(parent_id)
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if err != nil || doc.BookId != book_id {
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c.JsonResult(6003,"父分类不存在")
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}
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}
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document,_ := models.NewDocument().Find(doc_id)
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document.MemberId = c.Member.MemberId
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document.BookId = book_id
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if doc_identify != ""{
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document.Identify = doc_identify
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}
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document.Version = time.Now().Unix()
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document.DocumentName = doc_name
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document.ParentId = parent_id
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if err := document.InsertOrUpdate();err != nil {
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beego.Error("InsertOrUpdate => ",err)
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c.JsonResult(6005,"保存失败")
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}else{
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c.JsonResult(0,"ok",document)
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}
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}
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//上传附件或图片.
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func (c *DocumentController) Upload() {
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identify := c.GetString("identify")
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doc_id,_ := c.GetInt("doc_id")
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is_attach := true
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if identify == "" {
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c.JsonResult(6001,"参数错误")
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}
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name := "editormd-file-file"
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file,moreFile,err := c.GetFile(name)
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if err == http.ErrMissingFile {
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name = "editormd-image-file"
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file,moreFile,err = c.GetFile(name);
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if err == http.ErrMissingFile {
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c.JsonResult(6003,"没有发现需要上传的文件")
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}
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}
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if err != nil {
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c.JsonResult(6002,err.Error())
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}
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defer file.Close()
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ext := filepath.Ext(moreFile.Filename)
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if ext == "" {
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c.JsonResult(6003,"无法解析文件的格式")
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}
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if !conf.IsAllowUploadFileExt(ext) {
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c.JsonResult(6004,"不允许的文件类型")
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}
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book_id := 0
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//如果是超级管理员，则不判断权限
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if c.Member.Role == conf.MemberSuperRole {
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book,err := models.NewBook().FindByFieldFirst("identify",identify)
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if err != nil {
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c.JsonResult(6006, "文档不存在或权限不足")
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}
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book_id = book.BookId
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}else{
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book, err := models.NewBookResult().FindByIdentify(identify, c.Member.MemberId)
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if err != nil {
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beego.Error("DocumentController.Edit => ", err)
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if err == orm.ErrNoRows {
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c.JsonResult(6006, "权限不足")
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}
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c.JsonResult(6001, err.Error())
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}
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//如果没有编辑权限
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if book.RoleId != conf.BookEditor && book.RoleId != conf.BookAdmin && book.RoleId != conf.BookFounder {
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c.JsonResult(6006, "权限不足")
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}
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book_id = book.BookId
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}
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if doc_id > 0 {
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doc,err := models.NewDocument().Find(doc_id);
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if err != nil {
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c.JsonResult(6007,"文档不存在")
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}
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if doc.BookId != book_id {
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c.JsonResult(6008,"文档不属于指定的项目")
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}
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}
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fileName := "attach_" + strconv.FormatInt(time.Now().UnixNano(), 16)
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filePath := "uploads/" + time.Now().Format("200601") + "/" + fileName + ext
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path := filepath.Dir(filePath)
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os.MkdirAll(path, os.ModePerm)
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err = c.SaveToFile(name,filePath)
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if err != nil {
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beego.Error("SaveToFile => ",err)
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c.JsonResult(6005,"保存文件失败")
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}
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attachment := models.NewAttachment()
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attachment.BookId = book_id
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attachment.FileName = moreFile.Filename
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attachment.CreateAt = c.Member.MemberId
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attachment.FileExt = ext
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attachment.FilePath = filePath
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attachment.DocumentId = doc_id
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if fileInfo, err := os.Stat(filePath); err == nil {
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attachment.FileSize = float64(fileInfo.Size())
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}
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if doc_id > 0{
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attachment.DocumentId = doc_id
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}
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if strings.EqualFold(ext,".jpg") || strings.EqualFold(ext,".jpeg") || strings.EqualFold(ext,"png") || strings.EqualFold(ext,"gif") {
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attachment.HttpPath = "/" + filePath
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is_attach = false
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}
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err = attachment.Insert();
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if err != nil {
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os.Remove(filePath)
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beego.Error("Attachment Insert => ",err)
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c.JsonResult(6006,"文件保存失败")
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}
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if attachment.HttpPath == "" {
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attachment.HttpPath = beego.URLFor("DocumentController.DownloadAttachment",":key", identify, ":attach_id", attachment.AttachmentId)
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if err := attachment.Update();err != nil {
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beego.Error("SaveToFile => ",err)
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c.JsonResult(6005,"保存文件失败")
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}
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}
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result := map[string]interface{}{
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"errcode" : 0,
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"success" : 1,
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"message" :"ok",
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"url" : attachment.HttpPath,
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"alt" : attachment.FileName,
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"is_attach" : is_attach,
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"attach" : attachment,
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}
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c.Data["json"] = result
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c.ServeJSON(true)
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c.StopRun()
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}
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//DownloadAttachment 下载附件.
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func (c *DocumentController) DownloadAttachment() {
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c.Prepare()
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identify := c.Ctx.Input.Param(":key")
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attach_id,_ := strconv.Atoi(c.Ctx.Input.Param(":attach_id"))
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token := c.GetString("token")
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member_id := 0
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if c.Member != nil {
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member_id = c.Member.MemberId
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}
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book_id := 0
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//判断用户是否参与了项目
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bookResult,err := models.NewBookResult().FindByIdentify(identify,member_id)
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if err != nil {
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//判断项目公开状态
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book, err := models.NewBook().FindByFieldFirst("identify", identify)
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if err != nil {
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c.Abort("404")
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}
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//如果不是超级管理员则判断权限
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if c.Member == nil || c.Member.Role != conf.MemberSuperRole {
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//如果项目是私有的，并且token不正确
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if (book.PrivatelyOwned == 1 && token == "" ) || ( book.PrivatelyOwned == 1 && book.PrivateToken != token ) {
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c.Abort("403")
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}
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}
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book_id = book.BookId
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}else{
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book_id = bookResult.BookId
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}
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//查找附件
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attachment,err := models.NewAttachment().Find(attach_id)
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if err != nil {
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beego.Error("DownloadAttachment => ", err)
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if err == orm.ErrNoRows {
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c.Abort("404")
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} else {
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c.Abort("500")
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}
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}
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if attachment.BookId != book_id {
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c.Abort("404")
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}
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c.Ctx.Output.Download(attachment.FilePath,attachment.FileName)
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c.StopRun()
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}
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||
//删除附件.
|
||
func (c *DocumentController) RemoveAttachment() {
|
||
c.Prepare()
|
||
attach_id ,_ := c.GetInt("attach_id")
|
||
|
||
if attach_id <= 0 {
|
||
c.JsonResult(6001,"参数错误")
|
||
}
|
||
attach,err := models.NewAttachment().Find(attach_id)
|
||
|
||
if err != nil {
|
||
beego.Error(err)
|
||
c.JsonResult(6002,"附件不存在")
|
||
}
|
||
document,err := models.NewDocument().Find(attach.DocumentId)
|
||
|
||
if err != nil {
|
||
beego.Error(err)
|
||
c.JsonResult(6003,"文档不存在")
|
||
}
|
||
if c.Member.Role != conf.MemberSuperRole {
|
||
rel,err := models.NewRelationship().FindByBookIdAndMemberId(document.BookId,c.Member.MemberId)
|
||
if err != nil {
|
||
beego.Error(err)
|
||
c.JsonResult(6004,"权限不足")
|
||
}
|
||
if rel.RoleId == conf.BookObserver {
|
||
c.JsonResult(6004,"权限不足")
|
||
}
|
||
}
|
||
err = attach.Delete()
|
||
|
||
if err != nil {
|
||
beego.Error(err)
|
||
c.JsonResult(6005,"删除失败")
|
||
}
|
||
c.JsonResult(0,"ok",attach)
|
||
}
|
||
//删除文档.
|
||
func (c *DocumentController) Delete() {
|
||
c.Prepare()
|
||
|
||
identify := c.GetString("identify")
|
||
doc_id,err := c.GetInt("doc_id",0)
|
||
|
||
book_id := 0
|
||
//如果是超级管理员则忽略权限判断
|
||
if c.Member.Role == conf.MemberSuperRole {
|
||
book,err := models.NewBook().FindByFieldFirst("identify",identify)
|
||
if err != nil {
|
||
beego.Error("FindByIdentify => ", err)
|
||
c.JsonResult(6002, "项目不存在或权限不足")
|
||
}
|
||
book_id = book.BookId
|
||
}else {
|
||
bookResult, err := models.NewBookResult().FindByIdentify(identify, c.Member.MemberId)
|
||
|
||
if err != nil || bookResult.RoleId == conf.BookObserver {
|
||
beego.Error("FindByIdentify => ", err)
|
||
c.JsonResult(6002, "项目不存在或权限不足")
|
||
}
|
||
book_id = bookResult.BookId
|
||
}
|
||
|
||
if doc_id <= 0 {
|
||
c.JsonResult(6001,"参数错误")
|
||
}
|
||
|
||
doc,err := models.NewDocument().Find(doc_id)
|
||
|
||
if err != nil {
|
||
beego.Error("Delete => ",err)
|
||
c.JsonResult(6003,"删除失败")
|
||
}
|
||
//如果文档所属项目错误
|
||
if doc.BookId != book_id {
|
||
c.JsonResult(6004,"参数错误")
|
||
}
|
||
//递归删除项目下的文档以及子文档
|
||
err = doc.RecursiveDocument(doc.DocumentId)
|
||
if err != nil {
|
||
c.JsonResult(6005,"删除失败")
|
||
}
|
||
//重置文档数量统计
|
||
models.NewBook().ResetDocumentNumber(doc.BookId)
|
||
c.JsonResult(0,"ok")
|
||
}
|
||
|
||
//获取文档内容.
|
||
func (c *DocumentController) Content() {
|
||
c.Prepare()
|
||
|
||
identify := c.Ctx.Input.Param(":key")
|
||
doc_id,err := c.GetInt("doc_id")
|
||
|
||
if err != nil {
|
||
doc_id,_ = strconv.Atoi(c.Ctx.Input.Param(":id"))
|
||
}
|
||
book_id := 0
|
||
//如果是超级管理员，则忽略权限
|
||
if c.Member.Role == conf.MemberSuperRole {
|
||
book ,err := models.NewBook().FindByFieldFirst("identify",identify)
|
||
if err != nil {
|
||
c.JsonResult(6002, "项目不存在或权限不足")
|
||
}
|
||
book_id = book.BookId
|
||
}else {
|
||
bookResult, err := models.NewBookResult().FindByIdentify(identify, c.Member.MemberId)
|
||
|
||
if err != nil || bookResult.RoleId == conf.BookObserver {
|
||
beego.Error("FindByIdentify => ", err)
|
||
c.JsonResult(6002, "项目不存在或权限不足")
|
||
}
|
||
book_id = bookResult.BookId
|
||
}
|
||
|
||
if doc_id <= 0 {
|
||
c.JsonResult(6001,"参数错误")
|
||
}
|
||
|
||
if c.Ctx.Input.IsPost() {
|
||
markdown := strings.TrimSpace(c.GetString("markdown",""))
|
||
content := c.GetString("html")
|
||
version,_ := c.GetInt64("version",0)
|
||
is_cover := c.GetString("cover")
|
||
|
||
doc ,err := models.NewDocument().Find(doc_id);
|
||
|
||
if err != nil {
|
||
c.JsonResult(6003,"读取文档错误")
|
||
}
|
||
if doc.BookId != book_id {
|
||
c.JsonResult(6004,"保存的文档不属于指定项目")
|
||
}
|
||
if doc.Version != version && !strings.EqualFold(is_cover,"yes"){
|
||
beego.Info("%d|",version,doc.Version)
|
||
c.JsonResult(6005,"文档已被修改确定要覆盖吗？")
|
||
}
|
||
if markdown == "" && content != ""{
|
||
doc.Markdown = content
|
||
}else{
|
||
doc.Markdown = markdown
|
||
}
|
||
doc.Version = time.Now().Unix()
|
||
doc.Content = content
|
||
if err := doc.InsertOrUpdate();err != nil {
|
||
beego.Error("InsertOrUpdate => ",err)
|
||
c.JsonResult(6006,"保存失败")
|
||
}
|
||
|
||
c.JsonResult(0,"ok",doc)
|
||
}
|
||
doc,err := models.NewDocument().Find(doc_id)
|
||
|
||
if err != nil {
|
||
c.JsonResult(6003,"文档不存在")
|
||
}
|
||
attach,err := models.NewAttachment().FindListByDocumentId(doc.DocumentId)
|
||
if err == nil {
|
||
doc.AttachList = attach
|
||
}
|
||
c.JsonResult(0,"ok",doc)
|
||
}
|
||
|
||
//导出文件
|
||
func (c *DocumentController) Export() {
|
||
c.Prepare()
|
||
c.TplName = "document/export.tpl"
|
||
|
||
identify := c.Ctx.Input.Param(":key")
|
||
|
||
output := c.GetString("output")
|
||
|
||
token := c.GetString("token")
|
||
|
||
if identify == "" {
|
||
c.Abort("404")
|
||
}
|
||
//如果没有开启你们访问则跳转到登录
|
||
if !c.EnableAnonymous && c.Member == nil {
|
||
c.Redirect(beego.URLFor("AccountController.Login"),302)
|
||
return
|
||
}
|
||
bookResult := models.NewBookResult()
|
||
if c.Member != nil && c.Member.Role == conf.MemberSuperRole {
|
||
book,err := models.NewBook().FindByIdentify(identify)
|
||
if err != nil {
|
||
beego.Error(err)
|
||
c.Abort("500")
|
||
}
|
||
bookResult = book.ToBookResult()
|
||
}else {
|
||
bookResult = isReadable(identify, token, c)
|
||
}
|
||
docs, err := models.NewDocument().FindListByBookId(bookResult.BookId)
|
||
|
||
if err != nil {
|
||
beego.Error(err)
|
||
c.Abort("500")
|
||
}
|
||
|
||
if output == "pdf" {
|
||
|
||
exe := beego.AppConfig.String("wkhtmltopdf")
|
||
|
||
if exe == "" {
|
||
c.TplName = "errors/error.tpl";
|
||
c.Data["ErrorMessage"] = "没有配置PDF导出程序"
|
||
c.Data["ErrorCode"] = 50010
|
||
return
|
||
}
|
||
dpath := "cache/" + bookResult.Identify
|
||
|
||
os.MkdirAll(dpath, 0766)
|
||
|
||
pathList := list.New()
|
||
|
||
RecursiveFun(0, "", dpath, c, bookResult, docs, pathList)
|
||
|
||
defer os.RemoveAll(dpath)
|
||
|
||
os.MkdirAll("./cache", 0766)
|
||
pdfpath := "cache/" + identify + "_" + c.CruSession.SessionID() + ".pdf"
|
||
|
||
if _,err := os.Stat(pdfpath); os.IsNotExist(err){
|
||
paths := make([]string, len(docs))
|
||
index := 0
|
||
for e := pathList.Front(); e != nil; e = e.Next() {
|
||
paths[index] = e.Value.(string)
|
||
index ++
|
||
}
|
||
|
||
beego.Info(paths,pdfpath)
|
||
|
||
utils.ConverterHtmlToPdf(paths, pdfpath)
|
||
}
|
||
|
||
c.Ctx.Output.Download(pdfpath, identify + ".pdf")
|
||
|
||
defer os.Remove(pdfpath)
|
||
|
||
c.StopRun()
|
||
}
|
||
|
||
c.Abort("404")
|
||
}
|
||
|
||
//递归生成文档序列数组.
|
||
func RecursiveFun(parent_id int,prefix,dpath string,c *DocumentController,book *models.BookResult,docs []*models.Document,paths *list.List) {
|
||
for _, item := range docs {
|
||
if item.ParentId == parent_id {
|
||
name := prefix + strconv.Itoa(item.ParentId) + strconv.Itoa(item.OrderSort) + strconv.Itoa(item.DocumentId)
|
||
fpath := dpath + "/" + name + ".html"
|
||
paths.PushBack(fpath)
|
||
|
||
|
||
f, err := os.OpenFile(fpath, os.O_CREATE|os.O_RDWR, 0777)
|
||
|
||
if err != nil {
|
||
beego.Error(err)
|
||
c.Abort("500")
|
||
}
|
||
|
||
html, err := c.ExecuteViewPathTemplate("document/export.tpl", map[string]interface{}{"Model" : book, "Lists":item,"BaseUrl" : c.BaseUrl()})
|
||
if err != nil {
|
||
f.Close()
|
||
beego.Error(err)
|
||
c.Abort("500")
|
||
}
|
||
beego.Info(fpath,html)
|
||
f.WriteString(html)
|
||
f.Close()
|
||
|
||
for _, sub := range docs {
|
||
if sub.ParentId == item.DocumentId {
|
||
RecursiveFun(item.DocumentId,name,dpath,c,book,docs,paths)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|