hi!! I am a newbie in ROR.
I have two models
Post has_many :Comment
Comment belongs_to :Post
the error displays when I try to save a comment related to certain post. I get the following error
You shold use
has_many :comments instead of has_many :comment
Then you can call
@post.comments
Look this example: http://guides.rubyonrails.org/association_basics.html#the-has-many-through-association
Take a look at accepts_nested_attributes to create your posts: http://api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/ClassMethods.html
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