You can coerce everything into an arrayref like this (requires 5.10+): my $foo = param 'foo'; $foo = [ $foo // () ] if ref $foo ne 'ARRAY'; for (@$foo) { ... } $foo is now an arrayref with 0, 1, or more elements. You're still checking for undef and arrayref, so this is just a convenient shortcut. On Thu, Aug 21, 2014 at 3:55 AM, Andrew Beverley <andy@andybev.com> wrote:
Hi guys,
I may be missing something here, so I wanted to run this by you:
When a form is submitted that has multiple fields with the same name (such as several checkboxes), the values of that field are all returned in an array ref.
However, if the same form is submitted, but only one value is returned (eg. only one checkbox has been ticked) then a scalar is returned. If no checkboxes are ticked, then undef is returned.
This makes it difficult to process a form with several checkboxes, as the return value from param('checkbox') can be an array ref, scalar or undef, depending how many checkboxes are ticked.
At the moment, I'm testing for each of those 3 conditions. Is there a better way?
It would be useful if param() could be called in array context, in which case it would return 0, 1 or several items, depending on which ones were checked.
Thanks,
Andy
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