that will work perfect, thanks
On May 12, 3:01 am, Ryan Waldron <r...@erebor.com> wrote:
> What value should 'zip' contain if postal_code_number doesn't exist (or any
> of the keys above it)?
>
> If one of the keys in that long nasty chain are nil, you're going to get an
> exception, but if you know an acceptable default value in case you can't
> eval the whole expression, rescue the exception and return what you want.
>
> If you want it to be an empty string, for instance, you could do:
>
> zip =
> placemark['address_details']['country']['administrative_area']['locality'][
> 'postal_code']['postal_code_number']
> rescue ''
>
>
>
> On Tue, May 12, 2009 at 12:53 AM, scott <scot...@gmail.com> wrote:
>
> > i need to pull out some specific values from a nested hash, but nils
> > are driving me crazy. in the following example, if address_details,
> > country, administrative_area, locality OR postal_code are nil i get
> > "The error occurred while evaluating nil.[]"
>
> > zip = placemark['address_details']['country']['administrative_area']
> > ['locality']['postal_code']['postal_code_number']
>
> > i tried
>
> > unless placemark['address_details']['country']['administrative_area']
> > ['locality']['postal_code']['postal_code_number'].nil?
>
> > but if anything above postal_code_number is nil i still get the error.
> > i could check each level but that is really ugly.
>
> > is there a easy way to check if postal_code_number exists?
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