I'm curious how all of you CGI whizpopmonks like to handle instances where you must check against a parameter that may not be defined, I find that a lot of my programming seems to run into the fact that when using strict, I get a lot of "[Fri Oct 12 18:15:49 2001] form.cgi: Use of uninitialized value at /www/mako/dev/public_html/bin/form.cgi line 92." type of warnings. The following snippet builds a select for a form and I have defaults that I'd like to use but if the form has been called with parameters, use them instead. Note: $base_vars{'day'} is equal to todays date and $q->param('arrday') can be null (doesn't exist) or a day in the future. 
my @days = (1..31);

my $days_select = '<select name="arrday"><option></option>';
for (@days) {
  if ($q->param('arrday') && $q->param('arrday') == $_) {
    $days_select .= "<option value=\"$_\" selected>$_</option>";
  }
  elsif ($base_vars{'day'} == $_ && $base_vars{'day'} > $q->param('arr
+day')) {
    $days_select .= "<option value=\"$_\" selected>$_</option>";
  }
  else {
    $days_select .= "<option value=\"$_\">$_</option>";
  }
}
$days_select .= '</select>';

[download]

Could I get some suggestions on this? I'm tired of having error logs like 200mb's long {grin} kinda fine for development, not so fine for final code.

BlackJudas

In reply to CGI Programming Style With Empty Params by blackjudas

Title:
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