Question

I want to be able to show posts and have them sorted by a couple criteria, first by the amount of votes they have on them and second by the date at which they were created. I don’t want posts that are more than a week old being displayed so only posts in the last week. I tried doing this:

 <%= render @posts.sort_by { |post| post.votes.count if post.created_at < 1.week.ago.utc }.reverse %>

but it gave me an error of comparison of NilClass with 2 failed

I know the code works by just sorting posts by vote count but I also want to limit time so could someone tell me how this can be done. I’m still new so sorry for the simplicity.

Answer 1

Solution by @Salil is ok, but I would suggest adding counter_cache column ( http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html ) and changing recent_post code (from this comment: https://stackoverflow.com/a/11498634/1392074 ) into:

def self.recent_posts
  Post.where("created_at >= ?", 1.week.ago.utc).order("votes_count DESC, created_at DESC")
end