Ability to leave group from profile area

app/assets/stylesheets/common.scss

@@ -420,3 +420,8 @@ img.emoji {
   @extend .light;
   margin-bottom: 10px;
 }
+
+.group-name {
+  font-size: 14px;
+  line-height: 24px;
+}

app/controllers/profiles/groups_controller.rb

+class Profiles::GroupsController < ApplicationController
+  layout "profile"
+
+  def index
+    @groups = current_user.authorized_groups.all
+  end
+
+  def leave
+    @users_group = group.users_groups.where(user_id: current_user.id).first
+
+    if group.owner == current_user
+      redirect_to(profile_groups_path, alert: "You can't leave group. You must transfer it to another owner before leaving.")
+    else
+      @users_group.destroy
+      redirect_to(profile_groups_path, info: "You left #{group.name} group.")
+    end
+  end
+
+  private
+
+  def group
+    @group ||= Group.find_by_path(params[:id])
+  end
+end

app/views/layouts/_flash.html.haml

 .flash-container
   - if alert
-    .alert
+    .alert.alert-error
       %span= alert
   - elsif notice

app/views/layouts/nav/_profile.html.haml

@@ -12,6 +12,8 @@
       %span.count= current_user.keys.count
   = nav_link(path: 'profiles#design') do
     = link_to "Design", design_profile_path
+  = nav_link(controller: :groups) do
+    = link_to "Groups", profile_groups_path
   = nav_link(path: 'profiles#history') do
     = link_to "History", history_profile_path

app/views/profiles/groups/index.html.haml

+.ui-box
+  %h5.title Groups
+  %ul.well-list
+    - @groups.each do |group|
+      %li
+        .pull-right
+          - if can?(current_user, :manage_group, group)
+            = link_to edit_group_path(group), class: "btn-small btn grouped" do
+              %i.icon-cogs
+              Settings
+
+          = link_to leave_profile_group_path(group), confirm: "Are you sure you want to leave #{group.name} group?", method: :delete, class: "btn-small btn grouped", title: 'Remove user from group' do
+            %i.icon-signout
+            Leave
+
+        = link_to group, class: 'group-name' do
+          = group.name

app/views/users_groups/_users_group.html.haml

@@ -13,6 +13,7 @@
     - else
       = member.human_access
-    - if show_controls && user != current_user && user != @group.owner
+    - if show_controls && user != @group.owner && user != current_user
       = link_to group_users_group_path(@group, member), confirm: remove_user_from_group_message(@group, user), method: :delete, remote: true, class: "btn-tiny btn btn-remove", title: 'Remove user from group' do
         %i.icon-minus.icon-white
+

config/routes.rb

@@ -116,6 +116,11 @@ Gitlab::Application.routes.draw do
       resource :notifications, only: [:show, :update]
       resource :password, only: [:new, :create]
       resources :keys
+      resources :groups, only: [:index] do
+        member do
+          delete :leave
+        end
+      end
     end
   end