Redirect to the commit page after applying patch (#23056)

Fixes https://github.com/go-gitea/gitea/issues/22621

routers/web/repo/patch.go

@@ -27,8 +27,6 @@ func NewDiffPatch(ctx *context.Context) {
 
 	ctx.Data["PageIsPatch"] = true
 
-	ctx.Data["TreePath"] = ""
-
 	ctx.Data["commit_summary"] = ""
 	ctx.Data["commit_message"] = ""
 	if canCommit {
@@ -54,7 +52,6 @@ func NewDiffPatchPost(ctx *context.Context) {
 		branchName = form.NewBranchName
 	}
 	ctx.Data["PageIsPatch"] = true
-	ctx.Data["TreePath"] = ""
 	ctx.Data["BranchLink"] = ctx.Repo.RepoLink + "/src/" + ctx.Repo.BranchNameSubURL()
 	ctx.Data["FileContent"] = form.Content
 	ctx.Data["commit_summary"] = form.CommitSummary
@@ -89,13 +86,14 @@ func NewDiffPatchPost(ctx *context.Context) {
 		message += "\n\n" + form.CommitMessage
 	}
 
-	if _, err := files.ApplyDiffPatch(ctx, ctx.Repo.Repository, ctx.Doer, &files.ApplyDiffPatchOptions{
+	fileResponse, err := files.ApplyDiffPatch(ctx, ctx.Repo.Repository, ctx.Doer, &files.ApplyDiffPatchOptions{
 		LastCommitID: form.LastCommit,
 		OldBranch:    ctx.Repo.BranchName,
 		NewBranch:    branchName,
 		Message:      message,
 		Content:      strings.ReplaceAll(form.Content, "\r", ""),
-	}); err != nil {
+	})
+	if err != nil {
 		if models.IsErrBranchAlreadyExists(err) {
 			// User has specified a branch that already exists
 			branchErr := err.(models.ErrBranchAlreadyExists)
@@ -114,6 +112,6 @@ func NewDiffPatchPost(ctx *context.Context) {
 	if form.CommitChoice == frmCommitChoiceNewBranch && ctx.Repo.Repository.UnitEnabled(ctx, unit.TypePullRequests) {
 		ctx.Redirect(ctx.Repo.RepoLink + "/compare/" + util.PathEscapeSegments(ctx.Repo.BranchName) + "..." + util.PathEscapeSegments(form.NewBranchName))
 	} else {
-		ctx.Redirect(ctx.Repo.RepoLink + "/src/branch/" + util.PathEscapeSegments(branchName) + "/" + util.PathEscapeSegments(form.TreePath))
+		ctx.Redirect(ctx.Repo.RepoLink + "/commit/" + fileResponse.Commit.SHA)
 	}
 }