Diff for my enhancement to Data::FormValidator (v1.7), which adds the ability to define required alternates. In other words, it makes sure that at least one of a list of alternate fields has a value.
23c23
< package Data::FormValidator;
---
> package Data::FormValidator::Enhanced;
463a464,472
> #!##################################################################
+##
> my %alternates;
> # get list of alternates
> while ( my ( $field, $deps) = each %{$profile->{alternates}} ) {
> foreach my $dep (_arrayify($deps)){
> $alternates{$dep} = 1;
> }
> }
> ####################################################################
+##
519a529
> #!##################################################################
+##
522c532
< grep { not (exists $optional{$_} or exists $required{$_} ) } k
+eys %valid;
---
> grep { not (exists $optional{$_} or exists $required{$_} or ex
+ists $alternates{$_} ) } keys %valid;
526a537
> ####################################################################
+##
536a548,558
>
> #!##################################################################
+##
> # Check for the absence of alternate fields
> while ( my ( $field, $deps) = each %{$profile->{alternates}} ) {
> my $valid_alternate = 0;
> foreach my $dep (_arrayify($deps)){
> $valid_alternate = 1 if exists $valid{$dep};
> }
> push @missings, $field unless $valid_alternate;
> }
> ####################################################################
+##
Usage:
#!/usr/bin/perl -w
use strict;
use Data::FormValidator::Enhanced;
my $validator_profile = {
'contact' => {
required => [],
optional => [],
alternates => {
zip_or_postal => [ qw( zip postal ) ],
},
constraints => {
zip => "zip",
postal => "post_code",
},
filters => [ "trim" ],
},
};
my $validator = Data::FormValidator::Enhanced->new($validator_profile)
+;
my %param = ( zip => '', postal => '',);
my %error;
($error{valid}, $error{missing}, $error{invalid}, $error{unknown}) =
$validator->validate(\%param, 'contact');
my $errortext = '';
$errortext .= "The following required fields were not completed: \n" .
join("\n", @{$error{missing}}) . "\n";
$errortext .= "The following fields were not completed correctly: \n"
+.
join("\n", @{$error{invalid}}) . "\n";
print $errortext;
Template-Toolkit version(s) of jeffa's HTML::Template code from this node.
The first version uses TT2's more verbose way of referencing variables; the second uses the shorthand way (more like jeffa's code).
use strict;
use CGI qw(header);
use Template;
my $data = do {local $/; <DATA>};
my $template = Template->new();
my $params = {
questions => [
{
question => 'What is your favorite number?',
radio => [
{
regular => 'question01',
value => 'a',
label => 5,
},
{
regular => 'question01',
value => 'b',
label => 7,
},
{
regular => 'question01',
value => 'c',
label => 13,
},
{
special => 'question01',
value => 'd',
label => 'Other',
text => 'other',
},
],
},
{
question => 'Where did you hear about this product?',
radio => [
{
regular => 'question02',
value => 'a',
label => 'Friend',
},
{
special => 'question02',
value => 'b',
label => 'Magazine',
text => 'magname',
},
{
regular => 'question02',
value => 'c',
label => 'Brochure',
},
{
special => 'question02',
value => 'd',
label => 'Other',
text => 'other',
},
],
},
],
};
print header;
$template->process(\$data, $params) or die $!;
__DATA__
<form>
[% FOR q = questions %]
<p>
[% q.question %]<br>
[% FOR r = q.radio %]
[% UNLESS r.special %]
<input type="radio" name="[% r.regular %]" value="[% r.value %
+]">[% r.label %]<br>
[% ELSE %]
<input type="radio" name="[% r.special %]" value="[% r.value%]
+"/>[% r.label%] (please specify:)
<input type="text" name="[% r.text %]"/><br/>
[% END %]
[% END %]
[% END %]
<input type="submit">
</form>
use strict;
use CGI qw(header);
use Template;
my $data = do {local $/; <DATA>};
my $template = Template->new();
my $params = {
questions => [
{
question => 'What is your favorite number?',
radio => [
{
regular => 'question01',
value => 'a',
label => 5,
},
{
regular => 'question01',
value => 'b',
label => 7,
},
{
regular => 'question01',
value => 'c',
label => 13,
},
{
special => 'question01',
value => 'd',
label => 'Other',
text => 'other',
},
],
},
{
question => 'Where did you hear about this product?',
radio => [
{
regular => 'question02',
value => 'a',
label => 'Friend',
},
{
special => 'question02',
value => 'b',
label => 'Magazine',
text => 'magname',
},
{
regular => 'question02',
value => 'c',
label => 'Brochure',
},
{
special => 'question02',
value => 'd',
label => 'Other',
text => 'other',
},
],
},
],
};
print header;
$template->process(\$data, $params) or die $!;
__DATA__
<form>
[% FOR questions %]
<p>
[% question %]<br>
[% FOR radio %]
[% UNLESS special %]
<input type="radio" name="[% regular %]" value="[% value %]">[
+% label %]<br>
[% ELSE %]
<input type="radio" name="[% special %]" value="[% value%]"/>[
+% label%] (please specify:)
<input type="text" name="[% text %]"/><br/>
[% END %]
[% END %]
[% END %]
<input type="submit">
</form>
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