ruby on rails - how to only :include based on a conditional statement -

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i'm trying grab posts , comments belong_to post based on conditional:

ie.

# grab posts include comments have been approved. post.all(:include => :comments, :conditions => ['comments.approved = ?', true])

update july 20, 2011 10:11 est

to clarify, i'm trying grab posts , comments of post 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 comment of checked answer.

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

the documentation on feature improved in edgeguides. check out section 12.2 here.


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