diff --git a/models/attachment.go b/models/attachment.go
index 5380f2d49..1bd5b1da4 100644
--- a/models/attachment.go
+++ b/models/attachment.go
@@ -35,6 +35,20 @@ type Attachment struct {
 	CreatedUnix   timeutil.TimeStamp `xorm:"created"`
 }
 
+func (a *Attachment) AfterUpdate() {
+	if a.DatasetID > 0 {
+		datasetIsPublicCount, err := x.Where("dataset_id = ? AND is_private = ?", a.DatasetID, false).Count(new(Attachment))
+		if err != nil {
+			return
+		}
+		if datasetIsPublicCount > 0 {
+			x.Table(new(Dataset)).ID(a.DatasetID).Update(map[string]interface{}{"status": DatasetStatusPublic})
+		} else {
+			x.Table(new(Dataset)).ID(a.DatasetID).Update(map[string]interface{}{"status": DatasetStatusPrivate})
+		}
+	}
+}
+
 // IncreaseDownloadCount is update download count + 1
 func (a *Attachment) IncreaseDownloadCount() error {
 	// Update download count.
diff --git a/routers/repo/dataset.go b/routers/repo/dataset.go
index 8be5fa878..cef47ef70 100644
--- a/routers/repo/dataset.go
+++ b/routers/repo/dataset.go
@@ -1,6 +1,8 @@
 package repo
 
 import (
+	"sort"
+
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/base"
@@ -35,31 +37,30 @@ func DatasetIndex(ctx *context.Context) {
 		ctx.ServerError("GetDatasetAttachments", err)
 		return
 	}
+	attachments := dataset.Attachments
 
-	// var orderBy models.SearchOrderBy
-	// page := ctx.QueryInt("page")
-	// if page <= 0 {
-	// 	page = 1
-	// }
-	// ctx.Data["SortType"] = ctx.Query("sort")
-	// switch ctx.Query("sort") {
-	// case "newest":
-	// 	orderBy = models.SearchOrderByNewest
-	// case "oldest":
-	// 	orderBy = models.SearchOrderByOldest
-	// case "recentupdate":
-	// 	orderBy = models.SearchOrderByRecentUpdated
-	// case "leastupdate":
-	// 	orderBy = models.SearchOrderByLeastUpdated
-	// default:
-	// 	ctx.Data["SortType"] = "recentupdate"
-	// 	orderBy = models.SearchOrderByRecentUpdated
-	// }
+	ctx.Data["SortType"] = ctx.Query("sort")
+	switch ctx.Query("sort") {
+	case "newest":
+		sort.Slice(attachments, func(i, j int) bool {
+			return attachments[i].CreatedUnix > attachments[j].CreatedUnix
+		})
+	case "oldest":
+		sort.Slice(attachments, func(i, j int) bool {
+			return attachments[i].CreatedUnix < attachments[j].CreatedUnix
+		})
+	default:
+		ctx.Data["SortType"] = "newest"
+		sort.Slice(attachments, func(i, j int) bool {
+			return attachments[i].CreatedUnix > attachments[j].CreatedUnix
+		})
+	}
 
 	ctx.Data["PageIsDataset"] = true
 	ctx.Data["Title"] = ctx.Tr("dataset.show_dataset")
 	ctx.Data["Link"] = ctx.Repo.RepoLink + "/datasets"
 	ctx.Data["dataset"] = dataset
+	ctx.Data["Attachments"] = attachments
 	ctx.Data["IsOwner"] = true
 
 	ctx.HTML(200, tplIndex)
diff --git a/templates/repo/datasets/dataset_list.tmpl b/templates/repo/datasets/dataset_list.tmpl
index df626c985..775e2d89a 100644
--- a/templates/repo/datasets/dataset_list.tmpl
+++ b/templates/repo/datasets/dataset_list.tmpl
@@ -1,5 +1,5 @@
-{{if .dataset.Attachments}}
-  {{range .dataset.Attachments}}
+{{if .Attachments}}
+  {{range .Attachments}}
   <div class="ui grid item" id="{{.UUID}}">
     <div class="row">
       <div class="six wide column">
diff --git a/templates/repo/datasets/index.tmpl b/templates/repo/datasets/index.tmpl
index afa33263b..344e093a9 100644
--- a/templates/repo/datasets/index.tmpl
+++ b/templates/repo/datasets/index.tmpl
@@ -53,8 +53,6 @@
                   <div class="menu">
                     <a class="item" href="{{$.Link}}?sort=newest&q={{$.Keyword}}&tab={{$.TabName}}">{{.i18n.Tr "repo.issues.filter_sort.latest"}}</a>
                     <a class="item" href="{{$.Link}}?sort=oldest&q={{$.Keyword}}&tab={{$.TabName}}">{{.i18n.Tr "repo.issues.filter_sort.oldest"}}</a>
-                    <a class="item" href="{{$.Link}}?sort=oldest&q={{$.Keyword}}&tab={{$.TabName}}">{{.i18n.Tr "repo.issues.filter_sort.recentupdate"}}</a>
-                    <a class="item" href="{{$.Link}}?sort=oldest&q={{$.Keyword}}&tab={{$.TabName}}">{{.i18n.Tr "repo.issues.filter_sort.leastupdate"}}</a>
                   </div>
                 </div>
               </div>