Add ability to remove the branded page logo.

app/controllers/admin/appearances_controller.rb

@@ -25,6 +25,15 @@ class Admin::AppearancesController < Admin::ApplicationController
     end
   end
 
+  def logo
+    appearance = Appearance.last
+    appearance.remove_logo!
+
+    appearance.save
+
+    redirect_to admin_appearances_path, notice: 'Logo was succesfully removed.'
+  end
+
   private
 
   # Use callbacks to share common setup or constraints between actions.

app/views/admin/appearances/_form.html.haml

@@ -19,6 +19,9 @@
     .col-sm-10
       - if @appearance.logo?
         = image_tag @appearance.logo, class: 'appearance-logo-preview'
+        %br
+        = link_to 'Remove logo', logo_admin_appearances_path, data: { confirm: "Logo will be removed. Are you sure?"}, method: :delete, class: "btn btn-remove btn-small remove-logo"
+        %hr
       = f.file_field :logo, class: ""
       .hint
         Maximum logo size is 1MB, page optimized for logo size 640x360px

config/routes.rb

@@ -108,6 +108,7 @@ Gitlab::Application.routes.draw do
     resource :appearances, path: 'appearance' do
       member do
         get :preview
+        delete :logo
       end
     end
 

features/admin/appearance.feature

@@ -17,3 +17,12 @@ Feature: Admin Appearance
     Given application has custom appearance
     When I visit login page
     Then I should see a customized appearance
+
+  Scenario: Appearance logo
+    Given application has custom appearance
+    And I sign in as an admin
+    And I visit admin appearance page
+    When I attach a logo
+    Then I should see a logo
+    And I remove the logo
+    Then I should see logo removed

features/steps/admin/appearance.rb

@@ -32,6 +32,23 @@ class Spinach::Features::AdminAppearance < Spinach::FeatureSteps
     page.should have_content appearance.description
   end
 
+  step 'I attach a logo' do
+    attach_file(:appearance_logo, File.join(Rails.root, 'public', 'gitlab_logo.png'))
+    click_button 'Save'
+  end
+
+  step 'I should see a logo' do
+    page.should have_xpath('//img[@src="/uploads/appearance/logo/1/gitlab_logo.png"]')
+  end
+
+  step 'I remove the logo' do
+    click_link 'Remove logo'
+  end
+
+  step 'I should see logo removed' do
+    page.should_not have_xpath('//img[@src="/uploads/appearance/logo/1/gitlab_logo.png"]')
+  end
+
   def appearance
     Appearance.last
   end