On 3 March 2010 18:21, mac <[email protected]> wrote:
> hello,
> m following railcast 
> http://media.railscasts.com/videos/073_complex_forms_part_1.mov
>
> but i am getting error:  undefined method `build' for nil:NilClass

If you look on the line in your code where the error occurs you will
likely find that you are using something.build.  The error is
indicating the your 'something' is nil.

If you cannot see why it is nil it might be worth your while looking
at the rails guide on debugging at http://guides.rubyonrails.org.
This shows various methods of debugging your code.  For example you
can use ruby-debug to break into your code and inspect your data to
see what the problem is.

Colin

>
> can you please help
>
> though m using belongs_to and has_one relationship rather then
> "has_many" is this the problem ???
>
> if you want i can provide more details
>
>
> thank you
>
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