diff --git a/models/repo.go b/models/repo.go
index 70e2673d34..6fc590566e 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -27,6 +27,13 @@ type Repo struct {
 	Updated   time.Time `xorm:"updated"`
 }
 
+type Star struct {
+	Id      int64
+	RepoId  int64
+	UserId  int64
+	Created time.Time `xorm:"created"`
+}
+
 // check if repository is exist
 func IsRepositoryExist(user *User, reposName string) (bool, error) {
 	repo := Repo{OwnerId: user.Id}
@@ -121,6 +128,10 @@ func UnWatchRepository() {
 
 }
 
+func ForkRepository(reposName string, userId int64) {
+
+}
+
 func RepoPath(userName, repoName string) string {
 	return filepath.Join(UserPath(userName), repoName+".git")
 }