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



2013/8/22 ank k. <[email protected]>

> 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
> -----------------------------------------------------------------
> 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])
>     if @post_comment.save
>       redirect_to post_index_path
>       flash[:success] = "comment created!!"
>     end
>
> Could someone please explain why am I getting this error..
>
> Thanks in advance :)
>
> --
> Posted via http://www.ruby-forum.com/.
>
> --
> 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/7d1c4682a1e885d80a8023e854db5230%40ruby-forum.com
> .
> For more options, visit https://groups.google.com/groups/opt_out.
>

-- 
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/CAKj7%3DuRW5HsLrFxPkz6bey3bXg2qtcn%2B%3D44KVh2arTd5rojsMQ%40mail.gmail.com.
For more options, visit https://groups.google.com/groups/opt_out.

Reply via email to