From 915ab720164a269dc63d635038c515b93fd8da9f Mon Sep 17 00:00:00 2001
From: Thiago Ribeiro <thiagitosouza@gmail.com>
Date: Tue, 27 Oct 2015 22:58:15 -0200
Subject: [PATCH] Fix cache_key expiration on image uploaded in articles

---
 lib/create_thumbnails_job.rb            |  4 ++++
 test/unit/create_thumbnails_job_test.rb | 12 ++++++++++++
 2 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/lib/create_thumbnails_job.rb b/lib/create_thumbnails_job.rb
index a3d4e19..2c3ef97 100644
--- a/lib/create_thumbnails_job.rb
+++ b/lib/create_thumbnails_job.rb
@@ -3,5 +3,9 @@ class CreateThumbnailsJob < Struct.new(:class_name, :file_id)
     return unless class_name.constantize.exists?(file_id)
     file = class_name.constantize.find(file_id)
     file.create_thumbnails
+    article = Article.where(:image_id => file_id).first
+    if article
+      article.touch
+    end
   end
 end
diff --git a/test/unit/create_thumbnails_job_test.rb b/test/unit/create_thumbnails_job_test.rb
index 10003da..fa31220 100644
--- a/test/unit/create_thumbnails_job_test.rb
+++ b/test/unit/create_thumbnails_job_test.rb
@@ -34,4 +34,16 @@ class CreateThumbnailsJobTest < ActiveSupport::TestCase
     end
   end
 
+  should 'expire cache of articles that use an image that just got a thumbnail' do
+    person = create_user('test_user').person
+    file = UploadedFile.create!(:uploaded_data => fixture_file_upload('/files/rails.png', 'image/png'), :profile => person)
+    article = create(Article, :name => 'test', :image_builder => {
+       :uploaded_data => fixture_file_upload('/files/rails.png', 'image/png')
+    }, :profile_id => person.id)
+    old_cache_key = article.cache_key
+    job = CreateThumbnailsJob.new(file.class.name, file.id)
+    job.perform
+    process_delayed_job_queue
+    assert_not_equal old_cache_key, Article.find(article.id).reload.cache_key
+  end
 end
--
libgit2 0.21.2