From: Ryan Leavengood <leavengood@...>
Date: 2006-01-12T06:10:39+09:00
Subject: Re: Checking Join data for nil

On 1/11/06, Justin Kay <jkay@2pattersons.com> wrote:
> So I have a join 1:0..1.  If there is nothing in the child side I get an
> error when I say property.pdf.name  that I can't access nil.name.  But I
> can't seem to figure out how to check if pdf is nil or not before I call
> the .name function.  If I test for property.pdf == nil it always comes
> back as nil, which it isn't.
>
> Any ideas?

I'm not exactly sure what you are doing, but in general to check for
nil you can just use "if" like so (nil is false):

if property.pdf
  puts property.pdf.name
end

Or if you want to be explicit:

unless property.pdf.nil?
  puts property.pdf.name
end

If property.pdf is always nil, then you have some other bug in your code.

Ryan