changes how comment.created_at is shown

time_ago_in_words is not cache friendly

app/views/comments/_comment.html.erb

@@ -59,7 +59,7 @@
 
             <% end %>
 
-            &nbsp;&bullet;&nbsp;<%= time_ago_in_words(comment.created_at) %>
+            &nbsp;&bullet;&nbsp;<%= l comment.created_at.to_datetime, format: :datetime %>
           </div>
 
           <% if comment.as_administrator? %>

config/locales/rails.en.yml

@@ -20,3 +20,6 @@
 # available at http://guides.rubyonrails.org/i18n.html.
 
 en:
+  time:
+    formats:
+      datetime: "%Y-%m-%d %H:%M:%S"

config/locales/rails.es.yml

@@ -196,4 +196,5 @@ es:
       default: "%A, %d de %B de %Y %H:%M:%S %z"
       long: "%d de %B de %Y %H:%M"
       short: "%d de %b %H:%M"
+      datetime: "%d/%m/%Y %H:%M:%S"
     pm: pm

spec/features/comments_spec.rb

@@ -14,7 +14,7 @@ feature 'Comments' do
     comment = Comment.last
     within first('.comment') do
       expect(page).to have_content comment.user.name
-      expect(page).to have_content time_ago_in_words(comment.created_at)
+      expect(page).to have_content I18n.l(comment.created_at, format: :datetime)
       expect(page).to have_content comment.body
     end
   end