Question

I’m trying to grab Posts and only the comments that belong_to that Post based on a conditional:

ie.

# Grab all posts but only include comments that have been approved.
Post.all(:include => :comments, :conditions => ['comments.approved = ?', true])

Update July 20, 2011 10:11 EST

To clarify, I’m trying to grab all posts and only the comments of that post by a specific user.

def grab_posts_and_only_comments_from(user)
   {:include => [:comments], :conditions => ['comments.user_id = ?', user.id]}
end

UPDATED JULY 20, 2011 11:34 EST

Answer in the comment of the checked answer.

Answer 1

Post.includes(:comments).where("comments.approved = ?", true)

The documentation on this feature is much improved in the EdgeGuides. Check out Section 12.2 here.