Add DefaultMergeStyle option to repository (#14789)

Fixes #12293

modules/convert/repository.go

@@ -71,6 +71,7 @@ func innerToRepo(repo *models.Repository, mode models.AccessMode, isParent bool)
 	allowRebase := false
 	allowRebaseMerge := false
 	allowSquash := false
+	defaultMergeStyle := models.MergeStyleMerge
 	if unit, err := repo.GetUnit(models.UnitTypePullRequests); err == nil {
 		config := unit.PullRequestsConfig()
 		hasPullRequests = true
@@ -79,6 +80,7 @@ func innerToRepo(repo *models.Repository, mode models.AccessMode, isParent bool)
 		allowRebase = config.AllowRebase
 		allowRebaseMerge = config.AllowRebaseMerge
 		allowSquash = config.AllowSquash
+		defaultMergeStyle = config.GetDefaultMergeStyle()
 	}
 	hasProjects := false
 	if _, err := repo.GetUnit(models.UnitTypeProjects); err == nil {
@@ -139,6 +141,7 @@ func innerToRepo(repo *models.Repository, mode models.AccessMode, isParent bool)
 		AllowRebase:               allowRebase,
 		AllowRebaseMerge:          allowRebaseMerge,
 		AllowSquash:               allowSquash,
+		DefaultMergeStyle:         string(defaultMergeStyle),
 		AvatarURL:                 repo.AvatarLink(),
 		Internal:                  !repo.IsPrivate && repo.Owner.Visibility == api.VisibleTypePrivate,
 		MirrorInterval:            mirrorInterval,

modules/forms/repo_form.go

@@ -140,6 +140,7 @@ type RepoSettingForm struct {
 	PullsAllowRebaseMerge                 bool
 	PullsAllowSquash                      bool
 	PullsAllowManualMerge                 bool
+	PullsDefaultMergeStyle                string
 	EnableAutodetectManualMerge           bool
 	EnableTimetracker                     bool
 	AllowOnlyContributorsToTrackTime      bool

modules/structs/repo.go

@@ -89,6 +89,7 @@ type Repository struct {
 	AllowRebase               bool             `json:"allow_rebase"`
 	AllowRebaseMerge          bool             `json:"allow_rebase_explicit"`
 	AllowSquash               bool             `json:"allow_squash_merge"`
+	DefaultMergeStyle         string           `json:"default_merge_style"`
 	AvatarURL                 string           `json:"avatar_url"`
 	Internal                  bool             `json:"internal"`
 	MirrorInterval            string           `json:"mirror_interval"`
@@ -171,6 +172,8 @@ type EditRepoOption struct {
 	AllowManualMerge *bool `json:"allow_manual_merge,omitempty"`
 	// either `true` to enable AutodetectManualMerge, or `false` to prevent it. `has_pull_requests` must be `true`, Note: In some special cases, misjudgments can occur.
 	AutodetectManualMerge *bool `json:"autodetect_manual_merge,omitempty"`
+	// set to a merge style to be used by this repository: "merge", "rebase", "rebase-merge", or "squash". `has_pull_requests` must be `true`.
+	DefaultMergeStyle *string `json:"default_merge_style,omitempty"`
 	// set to `true` to archive this repository.
 	Archived *bool `json:"archived,omitempty"`
 	// set to a string like `8h30m0s` to set the mirror interval time