Re: Passing a hash from a form field?

On 04/30/2007 11:03 PM, [email protected] wrote:
> 
> I actually have the book as well ('Official Guide to Programming with 
> CGI.pm') and have practically torn it apart trying to find a way to do 
> what I want. I've tracked down and read a number of articles and forum 
> postings as well.
> 
> I have a feeling that a hash can't be passed this way. Arrays and 
> strings are no problem, but I believe the CGI protocol does not allow 
> passing complex data structures like arrays of hashes, or hashes of hashes.
> 

You are correct that CGI does not allow you to pass HoH structures 
directly; however, you can use Storable.pm to convert a HoH into a 
string that can be made the value of a form element (after it's been 
HTML-encoded).

Sessions are an even better idea for passing complex data between CGI 
programs written by the same author. Investigate the docs for 
CGI::Session and Apache::Session (if you're using Apache).