Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

How can I check which fields are empty and then list them on a page? I know how to check if they are empty, but how do I find out which ones? I know, of course, that I could use: 
if ($field eq "") {
if ($nextfield eq "") {
et cetera
}
}

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But isn't there an easier way?

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Re: Empty Fields
by Zaxo (Archbishop) on Apr 09, 2002 at 20:44 UTC

    If you are getting them from a cgi post, the empty fields will not be sent by most browsers, Have a list of the fields you require, @required, and check cgi params against that. grep is a good way to avoid clutter.

    my @needed = grep {!$cgi->param($_)} @required;
if (@needed) {...};

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    After Compline,
    Zaxo

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[d/l]

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