Add controller and views for instance integrations

- And routes
- Controller only with simple edit
- Fix issue with passing of partial loca variable
to make way for future-improvements to rename to
"integrations" instead of using instance variables

app/controllers/admin/integrations_controller.rb

+# frozen_string_literal: true
+
+class Admin::IntegrationsController < Admin::ApplicationController
+  include ServiceParams
+
+  before_action :set_integration, only: [:edit, :update, :test]
+
+  def edit
+  end
+
+  def update
+    if @service.update(service_params[:service])
+      redirect_to edit_admin_application_settings_integration_path(@service), notice: success_message
+    else
+      render :edit
+    end
+  end
+
+  def test
+  end
+
+  private
+
+  def set_integration
+    @service ||= Project.first.find_or_initialize_service(params[:id])
+  end
+
+  def success_message
+    if @service.active?
+      _('%{service_title} activated.') % { service_title: @service.title }
+    else
+      _('%{service_title} settings saved, but not activated.') % { service_title: @service.title }
+    end
+  end
+end

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

+%h3.page-title
+  = @service.title
+
+%p= @service.description
+
+= form_for :service, url: admin_application_settings_integration_path, method: :put, html: { class: 'fieldset-form' } do |form|
+  = render 'shared/service_settings', form: form, service: @service
+
+  .footer-block.row-content-block
+    = form.submit 'Save', class: 'btn btn-success'

app/views/admin/integrations/edit.html.haml

+- add_to_breadcrumbs _('Integrations'), admin_application_settings_integration_path
+- breadcrumb_title @service.title
+- page_title @service.title, _('Integrations')
+
+= render 'form'

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

@@ -4,7 +4,7 @@
 %p #{@service.description} template.
 
 = form_for :service, url: admin_application_settings_service_path, method: :put, html: { class: 'fieldset-form' } do |form|
-  = render 'shared/service_settings', form: form, subject: @service
+  = render 'shared/service_settings', form: form, service: @service
 
   .footer-block.row-content-block
     = form.submit 'Save', class: 'btn btn-success'

app/views/projects/services/_form.html.haml

@@ -11,7 +11,7 @@
       %p= @service.detailed_description
   .col-lg-9
     = form_for(@service, as: :service, url: project_service_path(@project, @service.to_param), method: :put, html: { class: 'gl-show-field-errors integration-settings-form js-integration-settings-form', data: { 'can-test' => @service.can_test?, 'test-url' => test_project_service_path(@project, @service) } }) do |form|
-      = render 'shared/service_settings', form: form, subject: @service
+      = render 'shared/service_settings', form: form, service: @service
       - if @service.editable?
         .footer-block.row-content-block
           = service_save_button(@service)

config/routes/admin.rb

@@ -121,6 +121,7 @@ namespace :admin do
     get '/', to: redirect('admin/application_settings/general'), as: nil
 
     resources :services, only: [:index, :edit, :update]
+    resources :integrations, only: [:edit, :update, :test]
 
     get :usage_data
     put :reset_registration_token