From 027591a3a556477a26d6c849e1ed9b9a53c15110 Mon Sep 17 00:00:00 2001
From: Ethan Koenig <etk39@cornell.edu>
Date: Sun, 5 Feb 2017 09:35:03 -0500
Subject: [PATCH] Redirects for renamed repos (#807)

* Redirects for renamed repos

* Remove unused phrase from locales
---
 models/error.go                      | 16 +++++++
 models/models.go                     |  1 +
 models/repo.go                       |  3 ++
 models/repo_redirect.go              | 62 ++++++++++++++++++++++++++++
 modules/context/repo.go              | 35 ++++++++++++++--
 options/locale/locale_bg-BG.ini      |  1 -
 options/locale/locale_cs-CZ.ini      |  1 -
 options/locale/locale_de-DE.ini      |  1 -
 options/locale/locale_en-US.ini      |  1 -
 options/locale/locale_es-ES.ini      |  1 -
 options/locale/locale_fi-FI.ini      |  1 -
 options/locale/locale_fr-FR.ini      |  1 -
 options/locale/locale_it-IT.ini      |  1 -
 options/locale/locale_ja-JP.ini      |  1 -
 options/locale/locale_ko-KR.ini      |  1 -
 options/locale/locale_lv-LV.ini      |  1 -
 options/locale/locale_nl-NL.ini      |  1 -
 options/locale/locale_pl-PL.ini      |  1 -
 options/locale/locale_pt-BR.ini      |  1 -
 options/locale/locale_ru-RU.ini      |  1 -
 options/locale/locale_sr-SP.ini      |  1 -
 options/locale/locale_sv-SE.ini      |  1 -
 options/locale/locale_tr-TR.ini      |  1 -
 options/locale/locale_zh-CN.ini      |  1 -
 options/locale/locale_zh-HK.ini      |  1 -
 options/locale/locale_zh-TW.ini      |  1 -
 routers/api/v1/api.go                |  9 +++-
 routers/repo/setting.go              |  5 +++
 templates/repo/settings/options.tmpl |  2 +-
 29 files changed, 127 insertions(+), 27 deletions(-)
 create mode 100644 models/repo_redirect.go

diff --git a/models/error.go b/models/error.go
index e0d33df6dc..8b0781f697 100644
--- a/models/error.go
+++ b/models/error.go
@@ -408,6 +408,22 @@ func (err ErrRepoAlreadyExist) Error() string {
 	return fmt.Sprintf("repository already exists [uname: %s, name: %s]", err.Uname, err.Name)
 }
 
+// ErrRepoRedirectNotExist represents a "RepoRedirectNotExist" kind of error.
+type ErrRepoRedirectNotExist struct {
+	OwnerID int64
+	RepoName string
+}
+
+// IsErrRepoRedirectNotExist check if an error is an ErrRepoRedirectNotExist
+func IsErrRepoRedirectNotExist(err error) bool {
+	_, ok := err.(ErrRepoRedirectNotExist)
+	return ok
+}
+
+func (err ErrRepoRedirectNotExist) Error() string {
+	return fmt.Sprintf("repository redirect does not exist [uid: %d, name: %s]", err.OwnerID, err.RepoName)
+}
+
 // ErrInvalidCloneAddr represents a "InvalidCloneAddr" kind of error.
 type ErrInvalidCloneAddr struct {
 	IsURLError         bool
diff --git a/models/models.go b/models/models.go
index ec93d4c12b..1f49640dd4 100644
--- a/models/models.go
+++ b/models/models.go
@@ -109,6 +109,7 @@ func init() {
 		new(LFSMetaObject),
 		new(TwoFactor),
 		new(RepoUnit),
+		new(RepoRedirect),
 	)
 
 	gonicNames := []string{"SSL", "UID"}
diff --git a/models/repo.go b/models/repo.go
index a16b7a86f0..ab10cb6651 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -1054,6 +1054,9 @@ func createRepository(e *xorm.Session, u *User, repo *Repository) (err error) {
 	if _, err = e.Insert(repo); err != nil {
 		return err
 	}
+	if err = deleteRepoRedirect(e, u.ID, repo.Name); err != nil {
+		return err
+	}
 
 	// insert units for repo
 	var units = make([]RepoUnit, 0, len(defaultRepoUnits))
diff --git a/models/repo_redirect.go b/models/repo_redirect.go
new file mode 100644
index 0000000000..813b3e6c9e
--- /dev/null
+++ b/models/repo_redirect.go
@@ -0,0 +1,62 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package models
+
+import "strings"
+
+// RepoRedirect represents that a repo name should be redirected to another
+type RepoRedirect struct {
+	ID             int64  `xorm:"pk autoincr"`
+	OwnerID        int64  `xorm:"UNIQUE(s)"`
+	LowerName      string `xorm:"UNIQUE(s) INDEX NOT NULL"`
+	RedirectRepoID int64  // repoID to redirect to
+}
+
+// LookupRepoRedirect look up if a repository has a redirect name
+func LookupRepoRedirect(ownerID int64, repoName string) (int64, error) {
+	repoName = strings.ToLower(repoName)
+	redirect := &RepoRedirect{OwnerID: ownerID, LowerName: repoName}
+	if has, err := x.Get(redirect); err != nil {
+		return 0, err
+	} else if !has {
+		return 0, ErrRepoRedirectNotExist{OwnerID: ownerID, RepoName: repoName}
+	}
+	return redirect.RedirectRepoID, nil
+}
+
+// NewRepoRedirect create a new repo redirect
+func NewRepoRedirect(ownerID, repoID int64, oldRepoName, newRepoName string) error {
+	oldRepoName = strings.ToLower(oldRepoName)
+	newRepoName = strings.ToLower(newRepoName)
+	sess := x.NewSession()
+	defer sess.Close()
+
+	if err := sess.Begin(); err != nil {
+		return err
+	}
+
+	if err := deleteRepoRedirect(sess, ownerID, newRepoName); err != nil {
+		sess.Rollback()
+		return err
+	}
+
+	if _, err := sess.Insert(&RepoRedirect{
+		OwnerID:        ownerID,
+		LowerName:      oldRepoName,
+		RedirectRepoID: repoID,
+	}); err != nil {
+		sess.Rollback()
+		return err
+	}
+	return sess.Commit()
+}
+
+// deleteRepoRedirect delete any redirect from the specified repo name to
+// anything else
+func deleteRepoRedirect(e Engine, ownerID int64, repoName string) error {
+	repoName = strings.ToLower(repoName)
+	_, err := e.Delete(&RepoRedirect{OwnerID: ownerID, LowerName: repoName})
+	return err
+}
diff --git a/modules/context/repo.go b/modules/context/repo.go
index 8de5b9821b..1ae98545a7 100644
--- a/modules/context/repo.go
+++ b/modules/context/repo.go
@@ -133,6 +133,26 @@ func earlyResponseForGoGetMeta(ctx *Context) {
 		})))
 }
 
+// RedirectToRepo redirect to a differently-named repository
+func RedirectToRepo(ctx *Context, redirectRepoID int64) {
+	ownerName := ctx.Params(":username")
+	previousRepoName := ctx.Params(":reponame")
+
+	repo, err := models.GetRepositoryByID(redirectRepoID)
+	if err != nil {
+		ctx.Handle(500, "GetRepositoryByID", err)
+		return
+	}
+
+	redirectPath := strings.Replace(
+		ctx.Req.URL.Path,
+		fmt.Sprintf("%s/%s", ownerName, previousRepoName),
+		fmt.Sprintf("%s/%s", ownerName, repo.Name),
+		1,
+	)
+	ctx.Redirect(redirectPath)
+}
+
 // RepoAssignment returns a macaron to handle repository assignment
 func RepoAssignment(args ...bool) macaron.Handler {
 	return func(ctx *Context) {
@@ -176,11 +196,18 @@ func RepoAssignment(args ...bool) macaron.Handler {
 		repo, err := models.GetRepositoryByName(owner.ID, repoName)
 		if err != nil {
 			if models.IsErrRepoNotExist(err) {
-				if ctx.Query("go-get") == "1" {
-					earlyResponseForGoGetMeta(ctx)
-					return
+				redirectRepoID, err := models.LookupRepoRedirect(owner.ID, repoName)
+				if err == nil {
+					RedirectToRepo(ctx, redirectRepoID)
+				} else if models.IsErrRepoRedirectNotExist(err) {
+					if ctx.Query("go-get") == "1" {
+						earlyResponseForGoGetMeta(ctx)
+						return
+					}
+					ctx.Handle(404, "GetRepositoryByName", err)
+				} else {
+					ctx.Handle(500, "LookupRepoRedirect", err)
 				}
-				ctx.Handle(404, "GetRepositoryByName", err)
 			} else {
 				ctx.Handle(500, "GetRepositoryByName", err)
 			}
diff --git a/options/locale/locale_bg-BG.ini b/options/locale/locale_bg-BG.ini
index 08433c28d1..88988396ed 100644
--- a/options/locale/locale_bg-BG.ini
+++ b/options/locale/locale_bg-BG.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=Синхр. сега
 settings.mirror_sync_in_progress=Синхронизация на огледалото е в ход, моля обновете страницата след минута.
 settings.site=Официален сайт
 settings.update_settings=Запази настройките
-settings.change_reponame_prompt=Тази промяна ще засегне връзките, които се отнасят до това хранилището.
 settings.advanced_settings=Разширени настройки
 settings.wiki_desc=Включи система за уики
 settings.use_internal_wiki=Използвай вградено уики
diff --git a/options/locale/locale_cs-CZ.ini b/options/locale/locale_cs-CZ.ini
index 2a346558f8..abe0f50997 100644
--- a/options/locale/locale_cs-CZ.ini
+++ b/options/locale/locale_cs-CZ.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=Provést synchronizaci
 settings.mirror_sync_in_progress=Synchronizace zrcadel probíhá, prosím načtěte znovu stránku přibližně za minutu.
 settings.site=Oficiální stránky
 settings.update_settings=Změnit nastavení
-settings.change_reponame_prompt=Tato změna ovlivní vztah odkazů k repositáři.
 settings.advanced_settings=Pokročilá nastavení
 settings.wiki_desc=Povolit systém Wiki
 settings.use_internal_wiki=Použít vestavěný systém Wiki
diff --git a/options/locale/locale_de-DE.ini b/options/locale/locale_de-DE.ini
index 7a612e1ba8..a956021ee8 100644
--- a/options/locale/locale_de-DE.ini
+++ b/options/locale/locale_de-DE.ini
@@ -643,7 +643,6 @@ settings.sync_mirror=Jetzt synchronisieren
 settings.mirror_sync_in_progress=Mirror Synchronisierung läuft, bitte die Seite in ca. einer Minute neu laden.
 settings.site=Offizielle Webseite
 settings.update_settings=Einstellungen speichern
-settings.change_reponame_prompt=Diese Änderung wirkt sich darauf aus, wie sich Links auf Repositories beziehen.
 settings.advanced_settings=Erweiterte Einstellungen
 settings.wiki_desc=Wiki einschalten
 settings.use_internal_wiki=Eingebautes Wiki verwenden
diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index 0859709db1..65320d4542 100644
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -699,7 +699,6 @@ settings.sync_mirror = Sync Now
 settings.mirror_sync_in_progress = Mirror syncing is in progress, please refresh page in about a minute.
 settings.site = Official Site
 settings.update_settings = Update Settings
-settings.change_reponame_prompt = This change will affect how links relate to the repository.
 settings.advanced_settings = Advanced Settings
 settings.wiki_desc = Enable wiki system
 settings.use_internal_wiki = Use builtin wiki
diff --git a/options/locale/locale_es-ES.ini b/options/locale/locale_es-ES.ini
index b271aae7c9..63b81fd29f 100644
--- a/options/locale/locale_es-ES.ini
+++ b/options/locale/locale_es-ES.ini
@@ -637,7 +637,6 @@ settings.sync_mirror=Sincronizar ahora
 settings.mirror_sync_in_progress=Sincronización de réplica en curso, por favor actualice la página en unos minutos.
 settings.site=Sitio oficial
 settings.update_settings=Actualizar configuración
-settings.change_reponame_prompt=Este cambio afectará a los enlaces al repositorio.
 settings.advanced_settings=Ajustes avanzados
 settings.wiki_desc=Activar sistema de wiki
 settings.use_internal_wiki=Usar wiki integrada
diff --git a/options/locale/locale_fi-FI.ini b/options/locale/locale_fi-FI.ini
index 9f4f20686a..c78b5fbc57 100644
--- a/options/locale/locale_fi-FI.ini
+++ b/options/locale/locale_fi-FI.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=Sync Now
 settings.mirror_sync_in_progress=Mirror syncing is in progress, please refresh page in about a minute.
 settings.site=Virallinen sivusto
 settings.update_settings=Päivitä asetukset
-settings.change_reponame_prompt=Tämä muutos vaikuttaa siihen miten linkit liittyvät repoon.
 settings.advanced_settings=Lisäasetukset
 settings.wiki_desc=Enable wiki system
 settings.use_internal_wiki=Use builtin wiki
diff --git a/options/locale/locale_fr-FR.ini b/options/locale/locale_fr-FR.ini
index 3dc5f3ed4d..781bda8243 100644
--- a/options/locale/locale_fr-FR.ini
+++ b/options/locale/locale_fr-FR.ini
@@ -637,7 +637,6 @@ settings.sync_mirror=Synchroniser maintenant
 settings.mirror_sync_in_progress=Synchronisation du miroir en cours, merci de rafraîchir la page dans une minute environ.
 settings.site=Site officiel
 settings.update_settings=Valider
-settings.change_reponame_prompt=Ce changement affectera comment les liens sont reliés avec le dépôt.
 settings.advanced_settings=Paramètres avancés
 settings.wiki_desc=Activer le wiki
 settings.use_internal_wiki=Utiliser le wiki interne
diff --git a/options/locale/locale_it-IT.ini b/options/locale/locale_it-IT.ini
index 23df5f0e88..ee2a50cd06 100644
--- a/options/locale/locale_it-IT.ini
+++ b/options/locale/locale_it-IT.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=Sync Now
 settings.mirror_sync_in_progress=Mirror syncing is in progress, please refresh page in about a minute.
 settings.site=Sito Ufficiale
 settings.update_settings=Aggiorna Impostazioni
-settings.change_reponame_prompt=Questa modifica influirà i link al repository.
 settings.advanced_settings=Opzioni avanzate
 settings.wiki_desc=Enable wiki system
 settings.use_internal_wiki=Use builtin wiki
diff --git a/options/locale/locale_ja-JP.ini b/options/locale/locale_ja-JP.ini
index e4aa993945..ef87bd6c93 100644
--- a/options/locale/locale_ja-JP.ini
+++ b/options/locale/locale_ja-JP.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=今すぐ同期
 settings.mirror_sync_in_progress=Mirror syncing is in progress, please refresh page in about a minute.
 settings.site=公式サイト
 settings.update_settings=設定の更新
-settings.change_reponame_prompt=この変更はリンクがリポジトリに関連付ける方法に影響します。
 settings.advanced_settings=拡張設定
 settings.wiki_desc=Enable wiki system
 settings.use_internal_wiki=Use builtin wiki
diff --git a/options/locale/locale_ko-KR.ini b/options/locale/locale_ko-KR.ini
index 2a9dfc694c..f38d1ed76f 100644
--- a/options/locale/locale_ko-KR.ini
+++ b/options/locale/locale_ko-KR.ini
@@ -637,7 +637,6 @@ settings.sync_mirror=지금 동기화
 settings.mirror_sync_in_progress=미러 동기화 진행 중입니다. 약 1분 뒤에 페이지를 새로 고침 하세요.
 settings.site=공식 사이트
 settings.update_settings=설정 저장
-settings.change_reponame_prompt=이 변경은 이 저장소와 연관된 링크들에 영향을 줄 것입니다.
 settings.advanced_settings=고급 설정
 settings.wiki_desc=위키 시스템 활성화
 settings.use_internal_wiki=내장 위키 사용
diff --git a/options/locale/locale_lv-LV.ini b/options/locale/locale_lv-LV.ini
index f1ddef2fe4..38445dd5d5 100644
--- a/options/locale/locale_lv-LV.ini
+++ b/options/locale/locale_lv-LV.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=Sinhronizēt tagad
 settings.mirror_sync_in_progress=Notiek spoguļa sinhronizācija, uzgaidiet aptuveni minūti un atjaunojiet lapu.
 settings.site=Oficiālā mājas lapa
 settings.update_settings=Mainīt iestatījumus
-settings.change_reponame_prompt=Šī izmaiņa ietekmēs saites, kas ir saistītas ar šo repozitoriju.
 settings.advanced_settings=Papildu iestatījumi
 settings.wiki_desc=Iespējot vikivietnes
 settings.use_internal_wiki=Izmantot iebūvēto vikivietni
diff --git a/options/locale/locale_nl-NL.ini b/options/locale/locale_nl-NL.ini
index b78fa09786..897bf25702 100644
--- a/options/locale/locale_nl-NL.ini
+++ b/options/locale/locale_nl-NL.ini
@@ -637,7 +637,6 @@ settings.sync_mirror=Sync Now
 settings.mirror_sync_in_progress=Kopie synchronisatie is bezig, vernieuw de pagina over ongeveer een minuut.
 settings.site=Officiële site
 settings.update_settings=Instellingen bewerken
-settings.change_reponame_prompt=Deze verandering zal gevolgen hebben voor hoe links zich verhouden tot de repository.
 settings.advanced_settings=Geavanceerde opties
 settings.wiki_desc=Enable wiki system
 settings.use_internal_wiki=Use builtin wiki
diff --git a/options/locale/locale_pl-PL.ini b/options/locale/locale_pl-PL.ini
index b4a0fe144c..56c78361bf 100644
--- a/options/locale/locale_pl-PL.ini
+++ b/options/locale/locale_pl-PL.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=Synchronizuj teraz
 settings.mirror_sync_in_progress=Synchronizacja kopii lustrzanej jest w toku, odśwież stronę w ciągu minuty.
 settings.site=Oficjalna Strona
 settings.update_settings=Aktualizuj ustawienia
-settings.change_reponame_prompt=Zmiana nazwy repozytorium wpłynie na linki do niego.
 settings.advanced_settings=Ustawienia zaawansowane
 settings.wiki_desc=Włącz system wiki
 settings.use_internal_wiki=Użyj wbudowanego wiki
diff --git a/options/locale/locale_pt-BR.ini b/options/locale/locale_pt-BR.ini
index bb95b3e19b..44b612bbe4 100644
--- a/options/locale/locale_pt-BR.ini
+++ b/options/locale/locale_pt-BR.ini
@@ -637,7 +637,6 @@ settings.sync_mirror=Sincronizar agora
 settings.mirror_sync_in_progress=A sincronização do mirror está em andamento, por favor atualize a página em aproximadamente um minuto.
 settings.site=Site oficial
 settings.update_settings=Atualizar configurações
-settings.change_reponame_prompt=Esta mudança irá afetar os links para este repositório.
 settings.advanced_settings=Configurações avançadas
 settings.wiki_desc=Habilitar sistema de wiki
 settings.use_internal_wiki=Usar wiki nativa
diff --git a/options/locale/locale_ru-RU.ini b/options/locale/locale_ru-RU.ini
index a34cec3a79..a7d2467e21 100644
--- a/options/locale/locale_ru-RU.ini
+++ b/options/locale/locale_ru-RU.ini
@@ -644,7 +644,6 @@ settings.sync_mirror=Синхронизировать
 settings.mirror_sync_in_progress=Выполняется синхронизация Зеркала, пожалуйста, обновите эту страницу через минуту.
 settings.site=Официальный сайт
 settings.update_settings=Обновить настройки
-settings.change_reponame_prompt=Это изменение повлияет на отношения ссылок к этому репозиторию.
 settings.advanced_settings=Расширенные настройки
 settings.wiki_desc=Включить систему Wiki
 settings.use_internal_wiki=Использовать встроенную wiki
diff --git a/options/locale/locale_sr-SP.ini b/options/locale/locale_sr-SP.ini
index f9a0b2891c..e848ca11da 100644
--- a/options/locale/locale_sr-SP.ini
+++ b/options/locale/locale_sr-SP.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=Изврши синхронизацију сада
 settings.mirror_sync_in_progress=Синхронизација је у току, молимо вас да освежите страницу ускоро.
 settings.site=Званични сајт
 settings.update_settings=Примени промене
-settings.change_reponame_prompt=Ова промена ће утицати на однос линкова на спремиште.
 settings.advanced_settings=Напредна подешавања
 settings.wiki_desc=Омогући систем вики
 settings.use_internal_wiki=Користи уграђен вики
diff --git a/options/locale/locale_sv-SE.ini b/options/locale/locale_sv-SE.ini
index 7c85c93f7a..19dc4b6945 100644
--- a/options/locale/locale_sv-SE.ini
+++ b/options/locale/locale_sv-SE.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=Synkronisera nu
 settings.mirror_sync_in_progress=Spegningssynkronisering pågår, vänligen ladda om sidan om cirka en minut.
 settings.site=Officiell webbplats
 settings.update_settings=Uppdatera inställningar
-settings.change_reponame_prompt=Denna ändring kommer att påverka hur länkar relaterar till detta repo.
 settings.advanced_settings=Advancerade Inställningar
 settings.wiki_desc=Aktivera wikisystem
 settings.use_internal_wiki=Använd inbyggd wiki
diff --git a/options/locale/locale_tr-TR.ini b/options/locale/locale_tr-TR.ini
index 16f3ecfa06..4a3f42b6ed 100644
--- a/options/locale/locale_tr-TR.ini
+++ b/options/locale/locale_tr-TR.ini
@@ -636,7 +636,6 @@ settings.sync_mirror=Sync Now
 settings.mirror_sync_in_progress=Mirror syncing is in progress, please refresh page in about a minute.
 settings.site=Resmi Web Sitesi
 settings.update_settings=Ayarları Güncelle
-settings.change_reponame_prompt=Bu değişiklik, bağlantıların depoyla olan ilişkisini etkileyecektir.
 settings.advanced_settings=Gelişmiş Ayarlar
 settings.wiki_desc=Viki sıstemini etkinleştir
 settings.use_internal_wiki=Use builtin wiki
diff --git a/options/locale/locale_zh-CN.ini b/options/locale/locale_zh-CN.ini
index dfb9bbb172..0a7244e022 100644
--- a/options/locale/locale_zh-CN.ini
+++ b/options/locale/locale_zh-CN.ini
@@ -650,7 +650,6 @@ settings.sync_mirror=立即同步
 settings.mirror_sync_in_progress=镜像同步请求已经生效,请稍后刷新页面。
 settings.site=官方网站
 settings.update_settings=更新仓库设置
-settings.change_reponame_prompt=该操作将会影响到所有与该仓库有关的链接
 settings.advanced_settings=高级设置
 settings.wiki_desc=启用 Wiki 系统
 settings.use_internal_wiki=使用内置 Wiki 系统
diff --git a/options/locale/locale_zh-HK.ini b/options/locale/locale_zh-HK.ini
index 9b7179ba93..428a0bc0bf 100644
--- a/options/locale/locale_zh-HK.ini
+++ b/options/locale/locale_zh-HK.ini
@@ -645,7 +645,6 @@ settings.sync_mirror=立即同步
 settings.mirror_sync_in_progress=鏡像同步正在進行中,請大約一分鐘後刷新頁面。
 settings.site=官方網站
 settings.update_settings=更新儲存庫設定
-settings.change_reponame_prompt=該操作將會影響到所有與該儲存庫有關的鏈接
 settings.advanced_settings=高級設定
 settings.wiki_desc=啓用 Wiki 系統
 settings.use_internal_wiki=使用內建 wiki
diff --git a/options/locale/locale_zh-TW.ini b/options/locale/locale_zh-TW.ini
index 9b7179ba93..428a0bc0bf 100644
--- a/options/locale/locale_zh-TW.ini
+++ b/options/locale/locale_zh-TW.ini
@@ -645,7 +645,6 @@ settings.sync_mirror=立即同步
 settings.mirror_sync_in_progress=鏡像同步正在進行中,請大約一分鐘後刷新頁面。
 settings.site=官方網站
 settings.update_settings=更新儲存庫設定
-settings.change_reponame_prompt=該操作將會影響到所有與該儲存庫有關的鏈接
 settings.advanced_settings=高級設定
 settings.wiki_desc=啓用 Wiki 系統
 settings.use_internal_wiki=使用內建 wiki
diff --git a/routers/api/v1/api.go b/routers/api/v1/api.go
index afdb2c0045..f89d6e3445 100644
--- a/routers/api/v1/api.go
+++ b/routers/api/v1/api.go
@@ -52,7 +52,14 @@ func repoAssignment() macaron.Handler {
 		repo, err := models.GetRepositoryByName(owner.ID, repoName)
 		if err != nil {
 			if models.IsErrRepoNotExist(err) {
-				ctx.Status(404)
+				redirectRepoID, err := models.LookupRepoRedirect(owner.ID, repoName)
+				if err == nil {
+					context.RedirectToRepo(ctx.Context, redirectRepoID)
+				} else if models.IsErrRepoRedirectNotExist(err) {
+					ctx.Status(404)
+				} else {
+					ctx.Error(500, "LookupRepoRedirect", err)
+				}
 			} else {
 				ctx.Error(500, "GetRepositoryByName", err)
 			}
diff --git a/routers/repo/setting.go b/routers/repo/setting.go
index 9a426c1598..17a5b4aa02 100644
--- a/routers/repo/setting.go
+++ b/routers/repo/setting.go
@@ -68,6 +68,11 @@ func SettingsPost(ctx *context.Context, form auth.RepoSettingForm) {
 				return
 			}
 
+			err := models.NewRepoRedirect(ctx.Repo.Owner.ID, repo.ID, repo.Name, newRepoName)
+			if err != nil {
+				ctx.Handle(500, "NewRepoRedirect", err)
+			}
+
 			log.Trace("Repository name changed: %s/%s -> %s", ctx.Repo.Owner.Name, repo.Name, newRepoName)
 		}
 		// In case it's just a case change.
diff --git a/templates/repo/settings/options.tmpl b/templates/repo/settings/options.tmpl
index 911d3693ce..363fb0527a 100644
--- a/templates/repo/settings/options.tmpl
+++ b/templates/repo/settings/options.tmpl
@@ -14,7 +14,7 @@
 						{{.CsrfTokenHtml}}
 						<input type="hidden" name="action" value="update">
 						<div class="required field {{if .Err_RepoName}}error{{end}}">
-							<label for="repo_name">{{.i18n.Tr "repo.repo_name"}}<span class="text red hide" id="repo-name-change-prompt"> {{.i18n.Tr "repo.settings.change_reponame_prompt"}}</span></label>
+							<label for="repo_name">{{.i18n.Tr "repo.repo_name"}}</label>
 							<input id="repo_name" name="repo_name" value="{{.Repository.Name}}" data-repo-name="{{.Repository.Name}}" autofocus required>
 						</div>
 						<div class="field {{if .Err_Description}}error{{end}}">