Question

I have the following code in views/posts/show.html.erb:

  <span><%= @post.time_ago_in_words(Time.now) %></span><br />

And I get this error:

undefined method `time_ago_in_words' for #<Post:0xac200b0>

Any suggestions to fix this?

Answer 1

time_ago_in_words is an Helper. It’s not an ActiveModel instance method. So you have to call it this way(the field is up to you):

 <span><%= time_ago_in_words(@post.created_at) %></span><br />

By the way, calculating this kind of stuff is not a best practise. I recommend you to take a look at a solution like jquery.timeago.