Change/remove a branch of an open issue

models/issue.go

@@ -729,6 +729,26 @@ func (issue *Issue) ChangeTitle(doer *User, oldTitle string) (err error) {
 	return sess.Commit()
 }
 
+// ChangeRef changes the branch of this issue, as the given user.
+func (issue *Issue) ChangeRef(doer *User, oldRef string) (err error) {
+	sess := x.NewSession()
+	defer sess.Close()
+
+	if err = sess.Begin(); err != nil {
+		return err
+	}
+
+	if err = updateIssueCols(sess, issue, "ref"); err != nil {
+		return fmt.Errorf("updateIssueCols: %v", err)
+	}
+
+	if err = issue.loadRepo(sess); err != nil {
+		return fmt.Errorf("loadRepo: %v", err)
+	}
+
+	return sess.Commit()
+}
+
 // AddDeletePRBranchComment adds delete branch comment for pull request issue
 func AddDeletePRBranchComment(doer *User, repo *Repository, issueID int64, branchName string) error {
 	issue, err := getIssueByID(x, issueID)

routers/repo/issue.go

@@ -956,7 +956,7 @@ func ViewIssue(ctx *context.Context) {
 	ctx.Data["Participants"] = participants
 	ctx.Data["NumParticipants"] = len(participants)
 	ctx.Data["Issue"] = issue
-	ctx.Data["ReadOnly"] = true
+	ctx.Data["ReadOnly"] = false
 	ctx.Data["SignInLink"] = setting.AppSubURL + "/user/login?redirect_to=" + ctx.Data["Link"].(string)
 	ctx.Data["IsIssuePoster"] = ctx.IsSigned && issue.IsPoster(ctx.User.ID)
 	ctx.Data["IsIssueWriter"] = ctx.Repo.CanWriteIssuesOrPulls(issue.IsPull)
@@ -1055,6 +1055,34 @@ func UpdateIssueTitle(ctx *context.Context) {
 	})
 }
 
+// UpdateIssueRef change issue's ref (branch)
+func UpdateIssueRef(ctx *context.Context) {
+	issue := GetActionIssue(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	if !ctx.IsSigned || (!issue.IsPoster(ctx.User.ID) && !ctx.Repo.CanWriteIssuesOrPulls(issue.IsPull)) {
+		ctx.Error(403)
+		return
+	}
+
+	ref := ctx.QueryTrim("ref")
+	if len(ref) == 0 {
+		ctx.Error(204)
+		return
+	}
+
+	if err := issue_service.ChangeIssueRef(issue, ctx.User, ref); err != nil {
+		ctx.ServerError("ChangeRef", err)
+		return
+	}
+
+	ctx.JSON(200, map[string]interface{}{
+		"ref": ref,
+	})
+}
+
 // UpdateIssueContent change issue's content
 func UpdateIssueContent(ctx *context.Context) {
 	issue := GetActionIssue(ctx)

routers/routes/routes.go

@@ -706,6 +706,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 				m.Post("/title", repo.UpdateIssueTitle)
 				m.Post("/content", repo.UpdateIssueContent)
 				m.Post("/watch", repo.IssueWatch)
+				m.Post("/ref", repo.UpdateIssueRef)
 				m.Group("/dependency", func() {
 					m.Post("/add", repo.AddDependency)
 					m.Post("/delete", repo.RemoveDependency)

services/issue/issue.go

@@ -40,6 +40,20 @@ func ChangeTitle(issue *models.Issue, doer *models.User, title string) (err erro
 	return nil
 }
 
+// ChangeIssueRef changes the branch of this issue, as the given user.
+func ChangeIssueRef(issue *models.Issue, doer *models.User, ref string) (err error) {
+	oldRef := issue.Ref
+	issue.Ref = ref
+
+	if err = issue.ChangeRef(doer, oldRef); err != nil {
+		return
+	}
+	// TODO: implement notifications
+	//notification.NotifyIssueChangeTitle(doer, issue, oldRef)
+
+	return nil
+}
+
 // UpdateAssignees is a helper function to add or delete one or multiple issue assignee(s)
 // Deleting is done the GitHub way (quote from their api documentation):
 // https://developer.github.com/v3/issues/#edit-an-issue

templates/repo/issue/branch_selector_field.tmpl

@@ -1,5 +1,11 @@
 {{if and (not .Issue.IsPull) (not .PageIsComparePull)}}
 <input id="ref_selector" name="ref" type="hidden" value="{{.Issue.Ref}}">
+<input id="editing_mode" name="edit_mode" type="hidden" value="{{.IsIssueWriter}}">
+<form method="POST" action="{{$.RepoLink}}/issues/{{.Issue.Index}}/ref" id="update_issueref_form">
+	<input id="api_endpoint" name="api_endpoint" type="hidden" value="{{$.RepoLink}}/issues/{{.Issue.Index}}/title">
+	{{$.CsrfTokenHtml}}
+</form>
+
 <div class="ui {{if .ReadOnly}}disabled{{end}} floating filter select-branch dropdown" data-no-results="{{.i18n.Tr "repo.pulls.no_results"}}">
 	<div class="ui basic small button">
 		<span class="text branch-name">{{if .Issue.Ref}}{{.Issue.Ref}}{{else}}{{.i18n.Tr "repo.issues.no_ref"}}{{end}}</span>

web_src/js/index.js

@@ -100,8 +100,21 @@ function initBranchSelector() {
   const $branchMenu = $selectBranch.find('.reference-list-menu');
   $branchMenu.find('.item:not(.no-select)').click(function () {
     const selectedValue = $(this).data('id');
+    const editMode = $('#editing_mode').val();
     $($(this).data('id-selector')).val(selectedValue);
     $selectBranch.find('.ui .branch-name').text(selectedValue);
+
+    if (editMode === 'true') {
+      const form = $('#update_issueref_form');
+
+      $.post(form.attr('action'), {
+        _csrf: csrf,
+        ref: selectedValue
+      },
+      () => {
+        reload();
+      });
+    }
   });
   $selectBranch.find('.reference.column').click(function () {
     $selectBranch.find('.scrolling.reference-list-menu').css('display', 'none');