Depending on performance needs, you can also look at the counter_cache option for the ActiveRecord association.
Your current approach has to query the child table to get the count, which could be a performance hit on a big site. Don't prematurely optimize though - it's just good to know about other options in case the need arises. On Sep 18, 8:05 am, Mark <polluxop...@gmail.com> wrote: > That did it. I think I've been staring at the monitor too > long... :-) > > On Sep 18, 2:34 am, Gourav <gouravtiwar...@gmail.com> wrote: > > > I think, you must have Post-'has many"-Comments relationship > > > So, to find number of comments: > > post.comments.count will give you total number of comments of a post. > > > -Gourav > > > On Sep 18, 10:58 am, Mark <polluxop...@gmail.com> wrote: > > > > I have "posts" and "comments", and I'd like to display the number of > > > comments each post has (and display 0 if none). In the index Posts > > > view, I display a list of posts and their authors using the below > > > partial. What I can't figure out is how to limit the comment count to > > > the post listing (my attempts so far show the total number of comments > > > in the database). How do I limit the count? > > > > partial: > > > > <% div_for post do %> > > > <p><strong><%= link_to_unless_current h(post.title), post > > > %></strong> > > > - > > > <font size="1">created by <%= post.user %> <%= > > > time_ago_in_words > > > (post.created_at) %> ago > > > </font><br /> > > > <%= post.body %></p> > > > <% end %> > > > > Many thanks! > > > Mark --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
