Add create/update to Labels controller

app/controllers/projects/labels_controller.rb

 class Projects::LabelsController < Projects::ApplicationController
   before_filter :module_enabled
-
+  before_filter :label, only: [:edit, :update]
   before_filter :authorize_labels!
+  before_filter :authorize_admin_labels!, only: [:edit, :update, :new, :create, :destroy]
 
   respond_to :js, :html
 
@@ -9,6 +10,32 @@ class Projects::LabelsController < Projects::ApplicationController
     @labels = @project.labels
   end
 
+  def new
+    @label = @project.labels.new
+
+  end
+
+  def create
+    @label = @project.labels.create(label_params)
+
+    if @label.valid?
+      redirect_to project_labels_path(@project)
+    else
+      render 'new'
+    end
+  end
+
+  def edit
+  end
+
+  def update
+    if @label.update_attributes(label_params)
+      redirect_to project_labels_path(@project)
+    else
+      render 'edit'
+    end
+  end
+
   def generate
     Gitlab::IssuesLabels.generate(@project)
 
@@ -28,4 +55,16 @@ class Projects::LabelsController < Projects::ApplicationController
       return render_404
     end
   end
+
+  def label_params
+    params.require(:label).permit(:title, :color)
+  end
+
+  def label
+    @label = @project.labels.find(params[:id])
+  end
+
+  def authorize_admin_labels!
+    return render_404 unless can?(current_user, :admin_label, @project)
+  end
 end

app/models/ability.rb

@@ -164,6 +164,7 @@ class Ability
         :modify_merge_request,
         :admin_issue,
         :admin_milestone,
+        :admin_label,
         :admin_project_snippet,
         :admin_team_member,
         :admin_merge_request,

config/routes.rb

@@ -297,7 +297,7 @@ Gitlab::Application.routes.draw do
         end
       end
 
-      resources :labels, only: [:index] do
+      resources :labels, constraints: {id: /\d+/} do
         collection do
           post :generate
         end