Introduced the deploy keys presenter

app/controllers/projects/settings/repository_controller.rb

@@ -7,7 +7,9 @@ module Projects
       before_action :load_protected_branches, only: [:show]
 
       def show
-        define_deploy_keys_variables
+        @deploy_keys = DeployKeysPresenter
+          .new(@project, current_user: @current_user)
+
         define_protected_branches_controller
       end
 
@@ -15,25 +17,8 @@ module Projects
         @protected_branches = @project.protected_branches.order(:name).page(params[:page])
       end
 
-      def set_index_vars
-        @enabled_keys           ||= @project.deploy_keys
-
-        @available_keys         ||= current_user.accessible_deploy_keys - @enabled_keys
-        @available_project_keys ||= current_user.project_deploy_keys - @enabled_keys
-        @available_public_keys  ||= DeployKey.are_public - @enabled_keys
-
-        # Public keys that are already used by another accessible project are already
-        # in @available_project_keys.
-        @available_public_keys -= @available_project_keys
-      end
-
       private
 
-      def define_deploy_keys_variables
-        @key = DeployKey.new
-        set_index_vars
-      end
-
       def define_protected_branches_controller
         @protected_branch = @project.protected_branches.new
         load_gon_index(@project)

app/presenters/projects/settings/deploy_keys_presenter.rb

+module Projects
+  module Settings
+    class DeployKeysPresenter < Gitlab::View::Presenter::Simple
+      presents :project
+
+      def new_key
+        @key ||= DeployKey.new
+      end
+
+      def enabled_keys
+        @enabled_keys ||= project.deploy_keys
+      end
+
+      def any_keys_enabled?
+        enabled_keys.any?
+      end
+
+      def enabled_keys_size
+        enabled_keys.size
+      end
+
+      def available_keys
+        @available_keys ||= current_user.accessible_deploy_keys - enabled_keys
+      end
+
+      def available_project_keys
+        @available_project_keys ||= current_user.project_deploy_keys - enabled_keys
+      end
+
+      def any_available_project_keys_enabled?
+        available_project_keys.any?
+      end
+
+      def available_project_keys_size
+        available_project_keys.size
+      end
+
+      def available_public_keys
+        return @available_public_keys if defined?(@available_public_keys)
+
+        @available_public_keys ||= DeployKey.are_public - enabled_keys
+
+        # Public keys that are already used by another accessible project are already
+        # in @available_project_keys.
+        @available_public_keys -= available_project_keys
+      end
+
+      def any_available_public_keys_enabled?
+        available_public_keys.any?
+      end
+
+      def available_public_keys_size
+        available_public_keys.size
+      end
+
+      def to_partial_path
+        'projects/deploy_keys/index'
+      end
+
+      def form_partial_path
+        'projects/deploy_keys/form'
+      end
+    end
+  end
+end

app/views/projects/deploy_keys/_deploy_key.html.haml

@@ -18,7 +18,7 @@
     %span.key-created-at
       created #{time_ago_with_tooltip(deploy_key.created_at)}
     .visible-xs-block.visible-sm-block
-    - if @available_keys.include?(deploy_key)
+    - if @deploy_keys.available_keys.include?(deploy_key)
       = link_to enable_namespace_project_deploy_key_path(@project.namespace, @project, deploy_key), class: "btn btn-sm prepend-left-10", method: :put do
         Enable
     - else

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

-= form_for [@project.namespace.becomes(Namespace), @project, @key], url: namespace_project_deploy_keys_path, html: { class: "js-requires-input" } do |f|
-  = form_errors(@key)
+= form_for [@project.namespace.becomes(Namespace), @project, @deploy_keys.new_key], url: namespace_project_deploy_keys_path, html: { class: "js-requires-input" } do |f|
+  = form_errors(@deploy_keys.new_key)
   .form-group
     = f.label :title, class: "label-light"
     = f.text_field :title, class: 'form-control', autofocus: true, required: true

app/views/projects/deploy_keys/_index.html.haml

@@ -7,31 +7,31 @@
   .col-lg-9
     %h5.prepend-top-0
       Create a new deploy key for this project
-    = render "projects/deploy_keys/form"
+    = render @deploy_keys.form_partial_path
   .col-lg-9.col-lg-offset-3
     %hr
   .col-lg-9.col-lg-offset-3.append-bottom-default.deploy-keys
     %h5.prepend-top-0
-      Enabled deploy keys for this project (#{@enabled_keys.size})
-    - if @enabled_keys.any?
+      Enabled deploy keys for this project (#{@deploy_keys.enabled_keys_size})
+    - if @deploy_keys.any_keys_enabled?
       %ul.well-list
-        - @enabled_keys.each do |enabled_key|
+        - @deploy_keys.enabled_keys.each do |enabled_key|
           = render partial: 'projects/deploy_keys/deploy_key', locals: {deploy_key: enabled_key}
     - else
       .settings-message.text-center
         No deploy keys found. Create one with the form above or add existing one below.
     %h5.prepend-top-default
-      Deploy keys from projects you have access to (#{@available_project_keys.size})
-    - if @available_project_keys.any?
+      Deploy keys from projects you have access to (#{@deploy_keys.available_project_keys_size})
+    - if @deploy_keys.any_available_project_keys_enabled?
       %ul.well-list
-        - @available_project_keys.each do |available_key|
+        - @deploy_keys.available_project_keys.each do |available_key|
           = render partial: 'projects/deploy_keys/deploy_key', locals: {deploy_key: available_key}
     - else
       .settings-message.text-center
         No deploy keys from your projects could be found. Create one with the form above or add existing one below.
-    - if @available_public_keys.any?
+    - if @deploy_keys.any_available_public_keys_enabled?
       %h5.prepend-top-default
-        Public deploy keys available to any project (#{@available_public_keys.size})
+        Public deploy keys available to any project (#{@deploy_keys.available_public_keys_size})
       %ul.well-list
-        - @available_public_keys.each do |available_key|
+        - @deploy_keys.available_public_keys.each do |available_key|
           = render partial: 'projects/deploy_keys/deploy_key', locals: {deploy_key: available_key}

app/views/projects/settings/repository/show.html.haml

 - page_title "Repository"
 
-= render "projects/deploy_keys/index"
+= render @deploy_keys
 = render "projects/protected_branches/index"

spec/presenters/projects/settings/deploy_keys_presenter_spec.rb

+require 'spec_helper'
+
+describe Projects::Settings::DeployKeysPresenter do
+  let(:project) { create(:empty_project) }
+  let(:user) { create(:user) }
+
+  subject(:presenter) do
+    described_class.new(project, current_user: user)
+  end
+
+  it 'inherits from Gitlab::View::Presenter::Simple' do
+    expect(described_class.superclass).to eq(Gitlab::View::Presenter::Simple)
+  end
+
+  describe '#enabled_keys' do
+    let(:deploy_key) do
+      create(:deploy_keys_project, project: project).deploy_key
+    end
+
+    it 'returns project keys' do
+      expect(presenter.enabled_keys).to eq [deploy_key]
+    end
+
+    it 'does not contain enabled_keys inside available_keys' do
+      expect(presenter.available_keys).not_to include deploy_key
+    end
+  end
+end