Allow set branch protection in an empty repository (#32095) (#32119)

Backport #32095 by @lunny

Resolve #32093

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

routers/web/web.go

@@ -1063,7 +1063,7 @@ func registerRoutes(m *web.Route) {
 			m.Combo("/edit").Get(repo_setting.SettingsProtectedBranch).
 				Post(web.Bind(forms.ProtectBranchForm{}), context.RepoMustNotBeArchived(), repo_setting.SettingsProtectedBranchPost)
 			m.Post("/{id}/delete", repo_setting.DeleteProtectedBranchRulePost)
-		}, repo.MustBeNotEmpty)
+		})
 
 		m.Group("/tags", func() {
 			m.Get("", repo_setting.ProtectedTags)

templates/repo/settings/branches.tmpl

@@ -15,7 +15,6 @@
 				<form class="tw-flex" action="{{.Link}}" method="post">
 					{{.CsrfTokenHtml}}
 					<input type="hidden" name="action" value="default_branch">
-					{{if not .Repository.IsEmpty}}
 					<div class="ui dropdown selection search tw-flex-1 tw-mr-2 tw-max-w-96">
 						{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 						<input type="hidden" name="branch" value="{{.Repository.DefaultBranch}}">
@@ -26,8 +25,7 @@
 							{{end}}
 						</div>
 					</div>
-						<button class="ui primary button">{{ctx.Locale.Tr "repo.settings.branches.update_default_branch"}}</button>
+					<button class="ui primary button"{{if .Repository.IsEmpty}} disabled{{end}}>{{ctx.Locale.Tr "repo.settings.branches.update_default_branch"}}</button>
-					{{end}}
 				</form>
 			</div>
 

templates/repo/settings/navbar.tmpl

@@ -13,11 +13,9 @@
 			</a>
 		{{end}}
 		{{if .Repository.UnitEnabled $.Context ctx.Consts.RepoUnitTypeCode}}
-			{{if not .Repository.IsEmpty}}
 			<a class="{{if .PageIsSettingsBranches}}active {{end}}item" href="{{.RepoLink}}/settings/branches">
 				{{ctx.Locale.Tr "repo.settings.branches"}}
 			</a>
-			{{end}}
 			<a class="{{if .PageIsSettingsTags}}active {{end}}item" href="{{.RepoLink}}/settings/tags">
 				{{ctx.Locale.Tr "repo.settings.tags"}}
 			</a>