diff --git a/models/user.go b/models/user.go
index f72462051..637ecdd85 100755
--- a/models/user.go
+++ b/models/user.go
@@ -157,6 +157,7 @@ type User struct {
 	NumFollowing    int `xorm:"NOT NULL DEFAULT 0"`
 	NumStars        int
 	NumDatasetStars int `xorm:"NOT NULL DEFAULT 0"`
+	NumImageStars   int `xorm:"NOT NULL DEFAULT 0"`
 	NumRepos        int
 
 	// For organization
diff --git a/modules/auth/cloudbrain.go b/modules/auth/cloudbrain.go
index 2f345e6c5..e5438369a 100755
--- a/modules/auth/cloudbrain.go
+++ b/modules/auth/cloudbrain.go
@@ -25,7 +25,7 @@ type CreateCloudBrainForm struct {
 type CommitImageCloudBrainForm struct {
 	Description string `form:"description" binding:"Required"`
 	Type        int    `form:"type"  binding:"Required"`
-	Tag         string `form:"tag" binding:"Required;MaxSize(64)" `
+	Tag         string `form:"tag" binding:"Required;MaxSize(100)" `
 	IsPrivate   bool   `form:"isPrivate" binding:"Required"`
 	Topics      string `form:"topics"`
 }
diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index 81e7c01f5..ceb655ec0 100755
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -725,7 +725,7 @@ dataset_setting= Dataset Setting
 title = Name
 title_format_err=Name can only contain number,letter,'-','_' or '.', and can be up to 100 characters long.
 description = Description
-description_format_err=Description's length can be up to 1024 characters long.
+description_format_err=Description's length can be up to %s characters long.
 create_dataset = Create Dataset
 create_dataset_fail=Failed to create dataset.
 query_dataset_fail=Failed to query dataset.
diff --git a/options/locale/locale_zh-CN.ini b/options/locale/locale_zh-CN.ini
index 92f48d2db..330930cb4 100755
--- a/options/locale/locale_zh-CN.ini
+++ b/options/locale/locale_zh-CN.ini
@@ -728,7 +728,7 @@ dataset_setting=数据集设置
 title=名称
 title_format_err=名称最多允许输入100个字符，只允许字母，数字，中划线 (‘-’)，下划线 (‘_’) 和点 (‘.’) 。
 description=描述
-description_format_err=描述最多允许输入1024个字符。
+description_format_err=描述最多允许输入%s个字符。
 create_dataset=创建数据集
 create_dataset_fail=创建数据集失败。
 query_dataset_fail=查询数据集失败。
diff --git a/routers/image/image.go b/routers/image/image.go
new file mode 100644
index 000000000..ae9912e3d
--- /dev/null
+++ b/routers/image/image.go
@@ -0,0 +1,30 @@
+package image
+
+import (
+	"net/http"
+	"strconv"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/context"
+)
+
+func Action(ctx *context.Context) {
+	var err error
+	imageId, _ := strconv.ParseInt(ctx.Params(":id"), 10, 64)
+	switch ctx.Params(":action") {
+
+	case "star":
+		err = models.StarImage(ctx.User.ID, imageId, true)
+	case "unstar":
+		err = models.StarImage(ctx.User.ID, imageId, false)
+	case "recommend":
+		err = models.RecommendImage(imageId, true)
+	case "unrecommend":
+		err = models.RecommendImage(imageId, false)
+	}
+	if err != nil {
+		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("repo.star_fail", ctx.Params(":action"))))
+	} else {
+		ctx.JSON(http.StatusOK, models.BaseOKMessage)
+	}
+}
diff --git a/routers/repo/cloudbrain.go b/routers/repo/cloudbrain.go
index 076fe36b4..226b4ce7d 100755
--- a/routers/repo/cloudbrain.go
+++ b/routers/repo/cloudbrain.go
@@ -2,11 +2,9 @@ package repo
 
 import (
 	"bufio"
-	"code.gitea.io/gitea/modules/timeutil"
 	"encoding/json"
 	"errors"
 	"fmt"
-	"github.com/unknwon/i18n"
 	"io"
 	"net/http"
 	"os"
@@ -15,6 +13,10 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"unicode/utf8"
+
+	"code.gitea.io/gitea/modules/timeutil"
+	"github.com/unknwon/i18n"
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/auth"
@@ -470,12 +472,17 @@ func CloudBrainImageEdit(ctx *context.Context) {
 			ctx.NotFound(ctx.Req.URL.RequestURI(), nil)
 		}
 		ctx.Data["Image"] = image
-		ctx.HTML(http.StatusOK, tplCloudBrainImageSubmit)
+		ctx.HTML(http.StatusOK, tplCloudBrainImageEdit)
 	}
 }
 
 func CloudBrainImageEditPost(ctx *context.Context, form auth.EditImageCloudBrainForm) {
 
+	if utf8.RuneCountInString(form.Description) > 255 {
+		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("dataset.description_format_err", 255)))
+		return
+	}
+
 	validTopics, errMessage := checkTopics(form.Topics)
 	if errMessage != "" {
 		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr(errMessage)))
@@ -529,6 +536,16 @@ func CloudBrainImageDelete(ctx *context.Context) {
 
 func CloudBrainCommitImage(ctx *context.Context, form auth.CommitImageCloudBrainForm) {
 
+	if !NamePattern.MatchString(form.Tag) {
+		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("dataset.title_format_err")))
+		return
+	}
+
+	if utf8.RuneCountInString(form.Description) > 255 {
+		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("dataset.description_format_err", 255)))
+		return
+	}
+
 	validTopics, errMessage := checkTopics(form.Topics)
 	if errMessage != "" {
 		ctx.JSON(http.StatusOK, ctx.Tr(errMessage))
diff --git a/routers/repo/dataset.go b/routers/repo/dataset.go
index d23722372..1a3762be3 100755
--- a/routers/repo/dataset.go
+++ b/routers/repo/dataset.go
@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
-	"regexp"
 	"sort"
 	"strconv"
 	"strings"
@@ -25,8 +24,6 @@ const (
 	taskstplIndex    base.TplName = "repo/datasets/tasks/index"
 )
 
-var titlePattern = regexp.MustCompile(`^[A-Za-z0-9-_\\.]{1,100}$`)
-
 // MustEnableDataset check if repository enable internal dataset
 func MustEnableDataset(ctx *context.Context) {
 	if !ctx.Repo.CanRead(models.UnitTypeDatasets) {
@@ -211,12 +208,12 @@ func CreateDatasetPost(ctx *context.Context, form auth.CreateDatasetForm) {
 
 	dataset := &models.Dataset{}
 
-	if !titlePattern.MatchString(form.Title) {
+	if !NamePattern.MatchString(form.Title) {
 		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("dataset.title_format_err")))
 		return
 	}
 	if utf8.RuneCountInString(form.Description) > 1024 {
-		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("dataset.description_format_err")))
+		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("dataset.description_format_err", 1024)))
 		return
 	}
 
@@ -248,12 +245,12 @@ func EditDatasetPost(ctx *context.Context, form auth.EditDatasetForm) {
 
 	ctx.Data["Title"] = ctx.Tr("dataset.edit_dataset")
 
-	if !titlePattern.MatchString(form.Title) {
+	if !NamePattern.MatchString(form.Title) {
 		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("dataset.title_format_err")))
 		return
 	}
 	if utf8.RuneCountInString(form.Description) > 1024 {
-		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("dataset.description_format_err")))
+		ctx.JSON(http.StatusOK, models.BaseErrorMessage(ctx.Tr("dataset.description_format_err", 1024)))
 		return
 	}
 
diff --git a/routers/repo/util.go b/routers/repo/util.go
new file mode 100644
index 000000000..f148fc52e
--- /dev/null
+++ b/routers/repo/util.go
@@ -0,0 +1,5 @@
+package repo
+
+import "regexp"
+
+var NamePattern = regexp.MustCompile(`^[A-Za-z0-9-_\\.]{1,100}$`)
diff --git a/routers/routes/routes.go b/routers/routes/routes.go
index f847cb8be..631ff3dfc 100755
--- a/routers/routes/routes.go
+++ b/routers/routes/routes.go
@@ -12,6 +12,8 @@ import (
 	"text/template"
 	"time"
 
+	"code.gitea.io/gitea/routers/image"
+
 	"code.gitea.io/gitea/routers/authentication"
 
 	"code.gitea.io/gitea/modules/cloudbrain"
@@ -529,6 +531,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 			m.Get("", admin.Images)
 			m.Get("/data", repo.GetAllImages)
 		})
+		m.Put("/image/:id/action/:action", image.Action)
 
 		m.Group("/^:configType(hooks|system-hooks)$", func() {
 			m.Get("", admin.DefaultOrSystemWebhooks)
@@ -976,11 +979,12 @@ func RegisterRoutes(m *macaron.Macaron) {
 	m.Group("/:username/:reponame", func() {
 		m.Post("/topics", repo.TopicsPost)
 	}, context.RepoAssignment(), context.RepoMustNotBeArchived(), reqRepoAdmin)
-    
-    m.Group("/image/:id", func() {
+
+	m.Group("/image/:id", func() {
 		m.Get("/:from", cloudbrain.AdminOrImageCreaterRight, repo.CloudBrainImageEdit)
 		m.Post("", cloudbrain.AdminOrImageCreaterRight, bindIgnErr(auth.EditImageCloudBrainForm{}), repo.CloudBrainImageEditPost)
 		m.Delete("", cloudbrain.AdminOrImageCreaterRight, repo.CloudBrainImageDelete)
+		m.Put("action/:action", reqSignIn, image.Action)
 	})
 	m.Group("/:username/:reponame", func() {
 		m.Group("", func() {