Refactor pull request view (4) (#37451)

Use JSON attribute instead of inline script

---------

Co-authored-by: Nicolas <bircni@icloud.com>

routers/web/repo/pull.go

@@ -164,12 +164,13 @@ func getPullInfo(ctx *context.Context) (issue *issues_model.Issue, ok bool) {
 func (prInfo *pullRequestViewInfo) setTemplateDataMergeTarget(ctx *context.Context) {
 	pull := prInfo.issue.PullRequest
 	if ctx.Repo.Owner.Name == pull.MustHeadUserName(ctx) {
-		ctx.Data["HeadTarget"] = pull.HeadBranch
+		prInfo.headTarget = pull.HeadBranch
 	} else if pull.HeadRepo == nil {
-		ctx.Data["HeadTarget"] = ctx.Locale.Tr("repo.pull.deleted_branch", pull.HeadBranch)
+		prInfo.headTarget = ctx.Locale.TrString("repo.pull.deleted_branch", pull.HeadBranch)
 	} else {
-		ctx.Data["HeadTarget"] = pull.MustHeadUserName(ctx) + "/" + pull.HeadRepo.Name + ":" + pull.HeadBranch
+		prInfo.headTarget = pull.MustHeadUserName(ctx) + "/" + pull.HeadRepo.Name + ":" + pull.HeadBranch
 	}
+	ctx.Data["HeadTarget"] = prInfo.headTarget
 	ctx.Data["BaseTarget"] = pull.BaseBranch
 	headBranchLink := ""
 	if pull.Flow == issues_model.PullRequestFlowGithub {
@@ -268,6 +269,11 @@ type pullMergeBoxData struct {
 	HasOverridableBlockers bool
 	CanMergeNow            bool
 
+	MergeFormProps        map[string]any
+	ShowPullCommands      bool
+	ShowMergeInstructions bool
+	AutodetectManualMerge bool
+
 	// don't expose unneeded fields to templates, need more refactoring changes
 	hasStatusCheckBlocker bool
 	isPullBranchDeletable bool
@@ -289,6 +295,7 @@ type pullRequestViewInfo struct {
 
 	IsPullRequestBroken bool
 	HeadBranchCommitID  string
+	headTarget          string // for display purpose only
 
 	CompareInfo         git_service.CompareInfo
 	ProtectedBranchRule *git_model.ProtectedBranch