Use UpdateIssueTitle model to change ref in backend

Author: Gitea

models/issue.go

@@ -733,6 +733,45 @@ func (issue *Issue) ChangeTitle(doer *User, oldTitle string) (err error) {
 	return sess.Commit()
 }
 
+// ChangeRef changes the branch of this issue, as the given user.
+func (issue *Issue) ChangeRef(doer *User, oldRef string) (err error) {
+	sess := x.NewSession()
+	defer sess.Close()
+
+	if err = sess.Begin(); err != nil {
+		return err
+	}
+
+	if err = updateIssueCols(sess, issue, "ref"); err != nil {
+		return fmt.Errorf("updateIssueCols: %v", err)
+	}
+
+	if err = issue.loadRepo(sess); err != nil {
+		return fmt.Errorf("loadRepo: %v", err)
+	}
+
+	if _, err = createComment(sess, &CreateCommentOptions{
+		Type:     CommentTypeChangeTitle,
+		Doer:     doer,
+		Repo:     issue.Repo,
+		Issue:    issue,
+		OldTitle: oldRef,
+		NewTitle: issue.Ref,
+	}); err != nil {
+		return fmt.Errorf("createComment: %v", err)
+	}
+
+	if err = issue.neuterCrossReferences(sess); err != nil {
+		return err
+	}
+
+	if err = issue.addCrossReferences(sess, doer); err != nil {
+		return err
+	}
+
+	return sess.Commit()
+}
+
 // AddDeletePRBranchComment adds delete branch comment for pull request issue
 func AddDeletePRBranchComment(doer *User, repo *Repository, issueID int64, branchName string) error {
 	issue, err := getIssueByID(x, issueID)

routers/repo/issue.go

@@ -1055,6 +1055,34 @@ func UpdateIssueTitle(ctx *context.Context) {
 	})
 }
 
+// UpdateIssueRef change issue's ref (branch)
+func UpdateIssueRef(ctx *context.Context) {
+	issue := GetActionIssue(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	if !ctx.IsSigned || (!issue.IsPoster(ctx.User.ID) && !ctx.Repo.CanWriteIssuesOrPulls(issue.IsPull)) {
+		ctx.Error(403)
+		return
+	}
+
+	ref := ctx.QueryTrim("ref")
+	if len(ref) == 0 {
+		ctx.Error(204)
+		return
+	}
+
+	if err := issue_service.ChangeIssueRef(issue, ctx.User, ref); err != nil {
+		ctx.ServerError("ChangeRef", err)
+		return
+	}
+
+	ctx.JSON(200, map[string]interface{}{
+		"ref": ref,
+	})
+}
+
 // UpdateIssueContent change issue's content
 func UpdateIssueContent(ctx *context.Context) {
 	issue := GetActionIssue(ctx)

services/issue/issue.go

@@ -40,6 +40,20 @@ func ChangeTitle(issue *models.Issue, doer *models.User, title string) (err erro
 	return nil
 }
 
+// ChangeIssueRef changes the branch of this issue, as the given user.
+func ChangeIssueRef(issue *models.Issue, doer *models.User, ref string) (err error) {
+	oldRef := issue.Ref
+	issue.Ref = ref
+
+	if err = issue.ChangeRef(doer, oldRef); err != nil {
+		return
+	}
+	// TODO: implement notifications
+	//notification.NotifyIssueChangeTitle(doer, issue, oldRef)
+
+	return nil
+}
+
 // UpdateAssignees is a helper function to add or delete one or multiple issue assignee(s)
 // Deleting is done the GitHub way (quote from their api documentation):
 // https://developer.github.com/v3/issues/#edit-an-issue