On 22 August 2013 20:56, ank k. <[email protected]> wrote: > hi!! I am a newbie in ROR. > > I have two models > > Post > has_many :Comment
that should be has_many :comments note that it is plural and lower case > > > Comment > belongs_to :Post belongs_to :post > > > the error displays when I try to save a comment related to certain post. > I get the following error > ----------------------------------------------------------------- > undefined method `comment' for nil:NilClass > ----------------------------------------------------------------- > my comment controllers > > def new > @comment = Comment.new > render :layout => false > end > > def create > @post = Post.find_by_id(params[:id]) > @post_comment = @post.comment.create(params[:comment]) You have not told us which line the error points to but I guess it is the one above. If so then it is saying that @post is nil, so your find_by_id did not find anything. You don't need to use find_by_id, you can just use @post = Post.find( params[:id] ) Perhaps there is not a Post object with the correct id. If you look in log/development.log you will see the params you are passing which may give you a clue. I suggest, however, that as a beginner you work right through a good tutorial such as railstutorial.org (which is free to use online). That will show you the basics of rails. Also see the Rails Guides. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/CAL%3D0gLvikJNJQYPC8OBMbmrwvtWA3Tgb35ZAgd%3Do%2B2RzQ7XDLw%40mail.gmail.com. For more options, visit https://groups.google.com/groups/opt_out.
