From a00abc00208d8acd561f32c25ef78f30394c7aa3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juanjo=20Baz=C3=A1n?= <jjbazan@gmail.com>
Date: Mon, 31 Aug 2015 20:26:30 +0200
Subject: [PATCH] adds touch to debates on tag destroy

---
 config/initializers/acts_as_taggable_on.rb |  7 +++++++
 spec/lib/cache_spec.rb                     | 14 ++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 spec/lib/cache_spec.rb

diff --git a/config/initializers/acts_as_taggable_on.rb b/config/initializers/acts_as_taggable_on.rb
index 8b1378917..dcccf9429 100644
--- a/config/initializers/acts_as_taggable_on.rb
+++ b/config/initializers/acts_as_taggable_on.rb
@@ -1 +1,8 @@
+ActsAsTaggableOn::Tagging.class_eval do
+  after_destroy :touch_taggable
 
+  def touch_taggable
+    taggable.touch
+  end
+
+end
\ No newline at end of file
diff --git a/spec/lib/cache_spec.rb b/spec/lib/cache_spec.rb
new file mode 100644
index 000000000..680799d2e
--- /dev/null
+++ b/spec/lib/cache_spec.rb
@@ -0,0 +1,14 @@
+require 'rails_helper'
+
+describe 'Cache flow' do
+
+  describe 'Tag destroy' do
+    it 'invalidates Debate cache keys' do
+      debate = create(:debate, tag_list: "Good, Bad")
+      tag = ActsAsTaggableOn::Tag.find_by(name: "Bad")
+
+      expect{tag.destroy}.to change {debate.reload.cache_key}
+    end
+  end
+
+end