Retarget depending pulls when the parent branch is deleted (#28686)

Sometimes you need to work on a feature which depends on another (unmerged) feature.
In this case, you may create a PR based on that feature instead of the main branch.
Currently, such PRs will be closed without the possibility to reopen in case the parent feature is merged and its branch is deleted.
Automatic target branch change make life a lot easier in such cases.
Github and Bitbucket behave in such way.

Example:
$PR_1$: main <- feature1
$PR_2$: feature1 <- feature2

Currently, merging $PR_1$ and deleting its branch leads to $PR_2$ being closed without the possibility to reopen.
This is both annoying and loses the review history when you open a new PR.

With this change, $PR_2$ will change its target branch to main ($PR_2$: main <- feature2) after $PR_1$ has been merged and its branch has been deleted.

This behavior is enabled by default but can be disabled.
For security reasons, this target branch change will not be executed when merging PRs targeting another repo. 

Fixes #27062
Fixes #18408

---------

Co-authored-by: Denys Konovalov <kontakt@denyskon.de>
Co-authored-by: delvh <dev.lh@web.de>
This commit is contained in:
Viktor Kuzmin 2024-01-17 03:44:56 +03:00 committed by GitHub
parent 9c869b10b5
commit 49eb168677
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
9 changed files with 158 additions and 24 deletions

View file

@ -913,6 +913,10 @@ func MergePullRequest(ctx *context.APIContext) {
}
defer headRepo.Close()
}
if err := pull_service.RetargetChildrenOnMerge(ctx, ctx.Doer, pr); err != nil {
ctx.Error(http.StatusInternalServerError, "RetargetChildrenOnMerge", err)
return
}
if err := repo_service.DeleteBranch(ctx, ctx.Doer, pr.HeadRepo, headRepo, pr.HeadBranch); err != nil {
switch {
case git.IsErrBranchNotExist(err):

View file

@ -1587,6 +1587,12 @@ func CleanUpPullRequest(ctx *context.Context) {
func deleteBranch(ctx *context.Context, pr *issues_model.PullRequest, gitRepo *git.Repository) {
fullBranchName := pr.HeadRepo.FullName() + ":" + pr.HeadBranch
if err := pull_service.RetargetChildrenOnMerge(ctx, ctx.Doer, pr); err != nil {
ctx.Flash.Error(ctx.Tr("repo.branch.deletion_failed", fullBranchName))
return
}
if err := repo_service.DeleteBranch(ctx, ctx.Doer, pr.HeadRepo, gitRepo, pr.HeadBranch); err != nil {
switch {
case git.IsErrBranchNotExist(err):