From: Frederick Cheung <frederick.cheung@...>
Date: 2008-08-04T07:02:34+09:00
Subject: Re: Why am I getting "undefined method" error?


On 3 Aug 2008, at 22:48, laredotornado wrote:

> Hi,
>
>        def self.has_items
>                FormItem.count(:all, :conditions => ["form_id
> = ?", :id])
>        end
> end
>
>
> but when i try and call this method from another class,
>
>        def new
>                @form = Form.find_by_user_id(session[:user_id])
>                if (@form == nil)
>                        false
>                else
>                        @form.has_items
>                end
>        end
>
You've defined a class method but you're calling it on an instance  
(and it looks like it should by a instance method. You could also do  
away with it altogether and right

if @form
  @form.form_items.any?
else
  false
end

or even

@form && @form.form_items.any?

Fred
> Any ideas?  Thanks, - Dave
>