Add Presentable concern

Signed-off-by: Rémy Coutable <remy@rymai.me>

app/controllers/projects/builds_controller.rb

@@ -94,7 +94,7 @@ class Projects::BuildsController < Projects::ApplicationController
   private
 
   def build
-    @build ||= project.builds.find_by!(id: params[:id])
+    @build ||= project.builds.find_by!(id: params[:id]).present(current_user)
   end
 
   def build_path(build)

app/models/ci/build.rb

@@ -2,6 +2,7 @@ module Ci
   class Build < CommitStatus
     include TokenAuthenticatable
     include AfterCommitQueue
+    include Presentable
 
     belongs_to :runner
     belongs_to :trigger_request

app/models/concerns/presentable.rb

+module Presentable
+  def present(**attributes)
+    Gitlab::View::Presenter::Factory
+      .new(self, attributes)
+      .fabricate!
+  end
+end

app/views/projects/builds/show.html.haml

@@ -51,8 +51,10 @@
     .prepend-top-default
       - if @build.erased?
         .erased.alert.alert-warning
-          - erased_by = "by #{link_to @build.erased_by.name, user_path(@build.erased_by)}" if @build.erased_by
-          Build has been erased #{erased_by.html_safe} #{time_ago_with_tooltip(@build.erased_at)}
+          - if @build.erased_by_user?
+            Build has been erased by #{link_to(@build.erased_by_name, user_path(@build.erased_by))} #{time_ago_with_tooltip(@build.erased_at)}
+          - else
+            Build has been erased #{time_ago_with_tooltip(@build.erased_at)}
       - else
         #js-build-scroll.scroll-controls
           .scroll-step

spec/models/concerns/presentable_spec.rb

+require 'spec_helper'
+
+describe Presentable do
+  let(:build) { create(:ci_build) }
+
+  describe '#present' do
+    it 'returns a presenter' do
+      expect(build.present).to be_a(Ci::Build::Presenter)
+    end
+
+    it 'takes optional attributes' do
+      expect(build.present(foo: 'bar').foo).to eq('bar')
+    end
+  end
+end