Fix sort order for organization home and user profile page (#31921)

Fix #31916

In #30876, `sortOrder` has been changed into a map, but it is only
implemented in explore.
~~But it seems that size sort order has no effect from long long ago,~~
not directly caused by the PR above.

I think it is still caused by #29231.
In #29231, it merged the sort orders from
`templates/explore/repo_search.tmpl` and
`templates/admin/repo/search.tmpl`.
In `templates/admin/repo/search.tmpl`, it contains size sort orders, but
not in `templates/explore/repo_search.tmpl`, which is used in non-admin
pages.
So `order by size` is added from #29231, but the handler was not added.

---------

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

routers/web/org/home.go

@@ -55,32 +55,12 @@ func home(ctx *context.Context, viewRepositories bool) {
 	ctx.Data["Title"] = org.DisplayName()
 
 	var orderBy db.SearchOrderBy
-	ctx.Data["SortType"] = ctx.FormString("sort")
-	switch ctx.FormString("sort") {
-	case "newest":
-		orderBy = db.SearchOrderByNewest
-	case "oldest":
-		orderBy = db.SearchOrderByOldest
-	case "recentupdate":
-		orderBy = db.SearchOrderByRecentUpdated
-	case "leastupdate":
-		orderBy = db.SearchOrderByLeastUpdated
-	case "reversealphabetically":
-		orderBy = db.SearchOrderByAlphabeticallyReverse
-	case "alphabetically":
-		orderBy = db.SearchOrderByAlphabetically
-	case "moststars":
-		orderBy = db.SearchOrderByStarsReverse
-	case "feweststars":
-		orderBy = db.SearchOrderByStars
-	case "mostforks":
-		orderBy = db.SearchOrderByForksReverse
-	case "fewestforks":
-		orderBy = db.SearchOrderByForks
-	default:
-		ctx.Data["SortType"] = "recentupdate"
-		orderBy = db.SearchOrderByRecentUpdated
+	sortOrder := ctx.FormString("sort")
+	if _, ok := repo_model.OrderByFlatMap[sortOrder]; !ok {
+		sortOrder = setting.UI.ExploreDefaultSort // TODO: add new default sort order for org home?
 	}
+	ctx.Data["SortType"] = sortOrder
+	orderBy = repo_model.OrderByFlatMap[sortOrder]
 
 	keyword := ctx.FormTrim("q")
 	ctx.Data["Keyword"] = keyword

routers/web/user/profile.go

@@ -110,32 +110,12 @@ func prepareUserProfileTabData(ctx *context.Context, showPrivate bool, profileDb
 		orderBy db.SearchOrderBy
 	)
 
-	ctx.Data["SortType"] = ctx.FormString("sort")
-	switch ctx.FormString("sort") {
-	case "newest":
-		orderBy = db.SearchOrderByNewest
-	case "oldest":
-		orderBy = db.SearchOrderByOldest
-	case "recentupdate":
-		orderBy = db.SearchOrderByRecentUpdated
-	case "leastupdate":
-		orderBy = db.SearchOrderByLeastUpdated
-	case "reversealphabetically":
-		orderBy = db.SearchOrderByAlphabeticallyReverse
-	case "alphabetically":
-		orderBy = db.SearchOrderByAlphabetically
-	case "moststars":
-		orderBy = db.SearchOrderByStarsReverse
-	case "feweststars":
-		orderBy = db.SearchOrderByStars
-	case "mostforks":
-		orderBy = db.SearchOrderByForksReverse
-	case "fewestforks":
-		orderBy = db.SearchOrderByForks
-	default:
-		ctx.Data["SortType"] = "recentupdate"
-		orderBy = db.SearchOrderByRecentUpdated
+	sortOrder := ctx.FormString("sort")
+	if _, ok := repo_model.OrderByFlatMap[sortOrder]; !ok {
+		sortOrder = setting.UI.ExploreDefaultSort // TODO: add new default sort order for org home?
 	}
+	ctx.Data["SortType"] = sortOrder
+	orderBy = repo_model.OrderByFlatMap[sortOrder]
 
 	keyword := ctx.FormTrim("q")
 	ctx.Data["Keyword"] = keyword