1512 lines
41 KiB
Perl
1512 lines
41 KiB
Perl
package WebGUI::Asset::Wobject::Survey::SurveyJSON;
|
|
|
|
=head1 LEGAL
|
|
|
|
-------------------------------------------------------------------
|
|
WebGUI is Copyright 2001-2009 Plain Black Corporation.
|
|
-------------------------------------------------------------------
|
|
Please read the legal notices (docs/legal.txt) and the license
|
|
(docs/license.txt) that came with this distribution before using
|
|
this software.
|
|
-------------------------------------------------------------------
|
|
http://www.plainblack.com info@plainblack.com
|
|
-------------------------------------------------------------------
|
|
|
|
=cut
|
|
|
|
=head1 NAME
|
|
|
|
Package WebGUI::Asset::Wobject::Survey::SurveyJSON
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
Helper class for WebGUI::Asset::Wobject::Survey. It handles
|
|
serializing and deserializing JSON data, and manages the data for
|
|
the Survey. This package is not intended to be used by any other
|
|
Asset in WebGUI.
|
|
|
|
=head2 Address Parameter
|
|
|
|
Most subroutines in this module accept an $address param. This param is an array ref that
|
|
serves as a multidimensional index into the section/question/answer structure.
|
|
|
|
In general, the first element of the array is the section index, the second element is
|
|
the question index, and the third element is the answer index. E.g. in its most general
|
|
form the array looks like:
|
|
|
|
[section index, question index, answer index]
|
|
|
|
Most subroutines will not expect or require all three elements to be present. Often, the
|
|
subroutine will alter its behaviour based on how many elements you provide. Typically,
|
|
the subroutine will operate on the most specific element it can based on the amount of
|
|
information you provide. For example if you provide two elements, the subroutine will most
|
|
likely operate on the question indexed by:
|
|
|
|
[section index, question index]
|
|
|
|
=cut
|
|
|
|
use strict;
|
|
use JSON;
|
|
use Data::Dumper;
|
|
use Params::Validate qw(:all);
|
|
Params::Validate::validation_options( on_fail => sub { WebGUI::Error::InvalidParam->throw( error => shift ) } );
|
|
|
|
use Clone qw/clone/;
|
|
|
|
# The maximum value of questionsPerPage is currently hardcoded here
|
|
my $MAX_QUESTIONS_PER_PAGE = 20;
|
|
|
|
=head2 new ( $session, json )
|
|
|
|
Object constructor.
|
|
|
|
=head3 $session
|
|
|
|
WebGUI::Session object
|
|
|
|
=head3 $json (optional)
|
|
|
|
A JSON string used to construct a new Perl object. The string should represent
|
|
a JSON hash made up of "survey" and "sections" keys.
|
|
|
|
=cut
|
|
|
|
sub new {
|
|
my $class = shift;
|
|
my ($session, $json) = validate_pos(@_, {isa => 'WebGUI::Session' }, { type => SCALAR | UNDEF, optional => 1});
|
|
|
|
# Load json object if given..
|
|
my $jsonData = $json ? from_json($json) : {};
|
|
|
|
# Create skeleton object..
|
|
my $self = {
|
|
_session => $session,
|
|
_sections => $jsonData->{sections} || [],
|
|
_survey => $jsonData->{survey} || {},
|
|
};
|
|
|
|
bless $self, $class;
|
|
|
|
#Load question types
|
|
$self->loadTypes();
|
|
|
|
# Initialise the survey data structure if empty..
|
|
if ( $self->totalSections == 0 ) {
|
|
$self->newObject( [] );
|
|
}
|
|
return $self;
|
|
}
|
|
|
|
=head2 loadTypes
|
|
|
|
Loads the Multiple Choice and Special Question types
|
|
|
|
=cut
|
|
|
|
sub loadTypes {
|
|
my $self = shift;
|
|
|
|
@{$self->{specialQuestionTypes}} = (
|
|
'Dual Slider - Range',
|
|
'Multi Slider - Allocate',
|
|
'Slider',
|
|
'Currency',
|
|
'Email',
|
|
'Number',
|
|
'Phone Number',
|
|
'Text',
|
|
'Text Date',
|
|
'TextArea',
|
|
'File Upload',
|
|
'Date',
|
|
'Date Range',
|
|
'Year Month',
|
|
'Country',
|
|
'Hidden',
|
|
) if(! defined $self->{specialQuestionTypes});
|
|
if(! defined $self->{multipleChoiceTypes}){
|
|
my $refs = $self->session->db->buildArrayRefOfHashRefs("SELECT questionType, answers FROM Survey_questionTypes");
|
|
map($self->{multipleChoiceTypes}->{$_->{questionType}} = $_->{answers} ? from_json($_->{answers}) : {}, @$refs);
|
|
}
|
|
}
|
|
|
|
sub addType {
|
|
my $self = shift;
|
|
my $name = shift;
|
|
my $address = shift;
|
|
my $obj = $self->getObject($address);
|
|
my $ansString = $obj->{answers} ? to_json $obj->{answers} : {};
|
|
$self->session->db->write("INSERT INTO Survey_questionTypes VALUES(?,?) ON DUPLICATE KEY UPDATE answers = ?",[$name,$ansString,$ansString]);
|
|
$self->question($address)->{questionType} = $name;
|
|
}
|
|
|
|
|
|
sub removeType {
|
|
my $self = shift;
|
|
my $address = shift;
|
|
my $obj = $self->getObject($address);
|
|
$self->session->db->write("DELETE FROM Survey_questionTypes WHERE questionType = ?",[$obj->{questionType}]);
|
|
}
|
|
|
|
=head2 specialQuestionTypes
|
|
|
|
Returns the arrayref to the special question types
|
|
|
|
=cut
|
|
|
|
sub specialQuestionTypes {
|
|
my $self = shift;
|
|
return $self->{specialQuestionTypes};
|
|
}
|
|
|
|
=head2 multipleChoiceTypes
|
|
|
|
Returns the hashref to the multiple choice types
|
|
|
|
=cut
|
|
|
|
sub multipleChoiceTypes {
|
|
my $self = shift;
|
|
return $self->{multipleChoiceTypes};
|
|
}
|
|
|
|
=head2 freeze
|
|
|
|
Serialize this Perl object into a JSON string. The serialized object is made up of the survey and sections
|
|
components of this object.
|
|
|
|
=cut
|
|
|
|
sub freeze {
|
|
my $self = shift;
|
|
return to_json(
|
|
{ sections => $self->sections,
|
|
survey => $self->{_survey},
|
|
}
|
|
);
|
|
}
|
|
|
|
=head2 newObject ( $address )
|
|
|
|
Add a new, empty Section, Question or Answer to the survey data structure.
|
|
|
|
Updates $address to point at the newly added object. Returns $address.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">. New objects are always added (pushed) onto the end of the list of similar objects at the
|
|
given address.
|
|
|
|
The number of elements in $address determines the behaviour:
|
|
|
|
=over 4
|
|
|
|
=item * 0 elements
|
|
|
|
Add a new section.
|
|
|
|
=item * 1 element
|
|
|
|
Add a new question to the indexed section.
|
|
|
|
=item * 2 elements
|
|
|
|
Add a new answer to the indexed question inside the indexed section.
|
|
|
|
=back
|
|
|
|
=cut
|
|
|
|
sub newObject {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF });
|
|
|
|
# Figure out what to do by counting the number of elements in the $address array ref
|
|
my $count = @{$address};
|
|
|
|
if ( $count == 0 ) {
|
|
# Add a new section to the end of the list of sections..
|
|
push @{ $self->sections }, $self->newSection();
|
|
|
|
# Update $address with the index of the newly created section
|
|
$address->[0] = $self->lastSectionIndex;
|
|
}
|
|
elsif ( $count == 1 ) {
|
|
# Add a new question to the end of the list of questions in section located at $address
|
|
push @{ $self->questions($address) }, $self->newQuestion($address);
|
|
|
|
# Update $address with the index of the newly created question
|
|
$address->[1] = $self->lastQuestionIndex($address);
|
|
}
|
|
elsif ( $count == 2 ) {
|
|
# Add a new answer to the end of the list of answers in section/question located at $address
|
|
push @{ $self->answers($address) }, $self->newAnswer($address);
|
|
|
|
# Update $address with the index of the newly created answer
|
|
$address->[2] = $self->lastAnswerIndex($address);
|
|
}
|
|
# Return the (modified) $address
|
|
return $address;
|
|
}
|
|
|
|
=head2 getDragDropList ( $address )
|
|
|
|
Get a subset of the entire data structure. It will be a list of all sections, along with
|
|
one question from a section with all its answers.
|
|
|
|
Returns an array reference. Each element of the array will have a subset of section information as
|
|
a hashref. This will contain two keys:
|
|
|
|
{
|
|
type => 'section',
|
|
text => the section's title
|
|
},
|
|
|
|
The questions for the referenced section will be included, like this:
|
|
|
|
{
|
|
type => 'question',
|
|
text => the question's text
|
|
},
|
|
|
|
All answers for the referenced question will also be in the array reference:
|
|
|
|
{
|
|
type => 'answer',
|
|
text => the answer's text
|
|
},
|
|
|
|
The sections, question and answer will be in depth-first order:
|
|
|
|
section, section, section, question, answer, answer, answer, section, section
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">. Determines which question from a section will be listed, along with all
|
|
its answers. Should ALWAYS have two elements since we want to address a question.
|
|
|
|
=cut
|
|
|
|
sub getDragDropList {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF });
|
|
|
|
my @data;
|
|
for my $sIndex (0 .. $self->lastSectionIndex) {
|
|
push @data, { text => $self->section( [$sIndex] )->{title}, type => 'section' };
|
|
if ( sIndex($address) == $sIndex ) {
|
|
|
|
for my $qIndex (0 .. $self->lastQuestionIndex($address)) {
|
|
push @data,
|
|
{ text => $self->question( [ $sIndex, $qIndex ] )->{text},
|
|
type => 'question'
|
|
}
|
|
;
|
|
if ( qIndex($address) == $qIndex ) {
|
|
for my $aIndex (0 .. $self->lastAnswerIndex($address)) {
|
|
push @data,
|
|
{ text => $self->answer( [ $sIndex, $qIndex, $aIndex ] )->{text},
|
|
type => 'answer'
|
|
}
|
|
;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return \@data;
|
|
}
|
|
|
|
=head2 getObject ( $address )
|
|
|
|
Retrieve objects from the sections data structure by address.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
The number of elements in $address determines the behaviour:
|
|
|
|
=over 4
|
|
|
|
=item * 0 elements
|
|
|
|
Do Nothing
|
|
|
|
=item * 1 element
|
|
|
|
One element is enough to reference a section. Returns that section.
|
|
|
|
=item * 2 elements
|
|
|
|
Two elements are enough to reference a question inside a section. Returns that question.
|
|
|
|
=item * 3 elements
|
|
|
|
Three elements are enough to reference an answer, inside of a particular question in a section.
|
|
Returns that answer.
|
|
|
|
=back
|
|
|
|
=cut
|
|
|
|
sub getObject {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF });
|
|
|
|
# Figure out what to do by counting the number of elements in the $address array ref
|
|
my $count = @{$address};
|
|
|
|
return if !$count;
|
|
|
|
if ( $count == 1 ) {
|
|
return clone $self->sections->[ sIndex($address) ];
|
|
}
|
|
elsif ( $count == 2 ) {
|
|
return clone $self->sections->[ sIndex($address) ]->{questions}->[ qIndex($address) ];
|
|
}
|
|
else {
|
|
return clone $self->sections->[ sIndex($address) ]->{questions}->[ qIndex($address) ]->{answers}
|
|
->[ aIndex($address) ];
|
|
}
|
|
}
|
|
|
|
=head2 getSectionEditVars ( $address )
|
|
|
|
A dispatcher for getSectionEditVars, getQuestionEditVars and getAnswerEditVars. Uses $address
|
|
to figure out what has been requested, then invokes that method and returns the results
|
|
from it.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">. The number of elements determines whether edit vars are fetched for
|
|
sections, questions, or answers.
|
|
|
|
=cut
|
|
|
|
sub getEditVars {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF });
|
|
# Figure out what to do by counting the number of elements in the $address array ref
|
|
my $count = @{$address};
|
|
|
|
if ( $count == 1 ) {
|
|
return $self->getSectionEditVars($address);
|
|
}
|
|
elsif ( $count == 2 ) {
|
|
return $self->getQuestionEditVars($address);
|
|
}
|
|
elsif ( $count == 3 ) {
|
|
return $self->getAnswerEditVars($address);
|
|
}
|
|
}
|
|
|
|
=head2 getGotoTargets
|
|
|
|
Generates the list of valid goto targets
|
|
|
|
=cut
|
|
|
|
sub getGotoTargets {
|
|
my $self = shift;
|
|
|
|
# Valid goto targets are all of the non-empty section variable names..
|
|
my @section_vars = grep { $_ ne q{} } map {$_->{variable}} @{$self->sections};
|
|
|
|
# ..and all of the non-empty question variable names..
|
|
my @question_vars = grep { $_ ne q{} } map {$_->{variable}} @{$self->questions};
|
|
|
|
# ..plus some special vars
|
|
my @special_vars = qw(NEXT_SECTION END_SURVEY);
|
|
|
|
# ..all combined
|
|
return [ @section_vars, @question_vars, @special_vars ];
|
|
}
|
|
|
|
=head2 getSectionEditVars ( $address )
|
|
|
|
Get a safe copy of the variables for this section, to use for editing
|
|
purposes.
|
|
|
|
Adds two variables:
|
|
|
|
=over 4
|
|
|
|
=item * id
|
|
|
|
the index of this section
|
|
|
|
=item * displayed_id
|
|
|
|
this question's index in a 1-based array (versus the default, perl style, 0-based array)
|
|
|
|
=back
|
|
|
|
It removes the questions array ref, and changes questionsPerPage from a single element, into
|
|
an array of hashrefs, which list the available questions per page and which one is currently
|
|
selected for this section.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">. Specifies which question to fetch variables for.
|
|
|
|
=cut
|
|
|
|
sub getSectionEditVars {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF });
|
|
|
|
my $section = $self->section($address);
|
|
my %var = %{$section};
|
|
|
|
# Add the extra fields..
|
|
$var{id} = sIndex($address);
|
|
$var{displayed_id} = sIndex($address) + 1;
|
|
|
|
# Remove the fields we don't want..
|
|
delete $var{questions};
|
|
delete $var{questionsPerPage};
|
|
|
|
# Change questionsPerPage from a single element, into an array of hashrefs, which list the
|
|
# available questions per page and which one is currently selected for this section..
|
|
for my $index ( 1 .. $MAX_QUESTIONS_PER_PAGE ) {
|
|
push @{ $var{questionsPerPage} }, {
|
|
index => $index,
|
|
selected => $index == $section->{questionsPerPage} ? 1 : 0
|
|
};
|
|
}
|
|
return \%var;
|
|
}
|
|
|
|
=head2 getQuestionEditVars ( $address )
|
|
|
|
Get a safe copy of the variables for this question, to use for editing purposes.
|
|
|
|
Adds two variables:
|
|
|
|
=over 4
|
|
|
|
=item * id
|
|
|
|
the index of the question's position in its parent's section array joined by dashes '-'
|
|
See L<WebGUI::Asset::Wobject::Survey::ResponseJSON/questionIndex>.
|
|
|
|
=item * displayed_id
|
|
|
|
this question's index in a 1-based array (versus the default, perl style, 0-based array).
|
|
|
|
=back
|
|
|
|
It removes the answers array ref, and changes questionType from a single element, into
|
|
an array of hashrefs, which list the available question types and which one is currently
|
|
selected for this question.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">. Specifies which question to fetch variables for.
|
|
|
|
=cut
|
|
|
|
sub getQuestionEditVars {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF });
|
|
|
|
my $question = $self->question($address);
|
|
my %var = %{$question};
|
|
|
|
# Add the extra fields..
|
|
$var{id} = sIndex($address) . q{-} . qIndex($address);
|
|
$var{displayed_id} = qIndex($address) + 1;
|
|
|
|
# Remove the fields we don't want
|
|
delete $var{answers};
|
|
delete $var{questionType};
|
|
|
|
# Change questionType from a single element into an array of hashrefs which list the available
|
|
# question types and which one is currently selected for this question..
|
|
for my $qType ($self->getValidQuestionTypes) {
|
|
push @{ $var{questionType} }, {
|
|
text => $qType,
|
|
selected => $qType eq $question->{questionType} ? 1 : 0
|
|
};
|
|
}
|
|
return \%var;
|
|
}
|
|
|
|
=head2 getValidQuestionTypes
|
|
|
|
A convenience method. Returns a list of question types.
|
|
|
|
=cut
|
|
|
|
sub getValidQuestionTypes {
|
|
my $self = shift;
|
|
return sort (@{$self->{specialQuestionTypes}}, keys %{$self->{multipleChoiceTypes}});
|
|
}
|
|
|
|
=head2 getAnswerEditVars ( $address )
|
|
|
|
Get a safe copy of the variables for this answer, to use for editing purposes.
|
|
|
|
Adds two variables:
|
|
|
|
=over 4
|
|
|
|
=item * id
|
|
|
|
The index of the answer's position in its parent's question and section arrays joined by dashes '-'
|
|
See L<WebGUI::Asset::Wobject::Survey::ResponseJSON/answerIndex>.
|
|
|
|
=item * displayed_id
|
|
|
|
This answer's index in a 1-based array (versus the default, perl style, 0-based array).
|
|
|
|
=back
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">. Specifies which answer to fetch variables for.
|
|
|
|
=cut
|
|
|
|
sub getAnswerEditVars {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF });
|
|
|
|
my $object = $self->answer($address);
|
|
my %var = %{$object};
|
|
|
|
# Add the extra fields..
|
|
$var{id} = sIndex($address) . q{-} . qIndex($address) . q{-} . aIndex($address);
|
|
$var{displayed_id} = aIndex($address) + 1;
|
|
|
|
return \%var;
|
|
}
|
|
|
|
=head2 update ( $address, $properties )
|
|
|
|
Update a section/question/answer with $properties, or add new ones.
|
|
Does not return anything significant.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
The number of elements in $address determines the behaviour:
|
|
|
|
=over 4
|
|
|
|
=item * 0 elements
|
|
|
|
Do Nothing
|
|
|
|
=item * 1 element
|
|
|
|
Update the addressed section with $properties. If the section does not exist, such
|
|
as by using an out of bounds array index, then a new section is appended
|
|
to the list of sections.
|
|
|
|
=item * 2 elements
|
|
|
|
Update the addressed question with $properties.
|
|
|
|
=item * 3 elements
|
|
|
|
Update the addressed answer with $properties.
|
|
|
|
=back
|
|
|
|
=head3 $properties
|
|
|
|
A perl hash reference. Note, that it is not checked for type, so it is
|
|
possible to add a "question" object into the list of sections.
|
|
$properties should never be a partial object, but contain all properties.
|
|
|
|
=cut
|
|
|
|
sub update {
|
|
my $self = shift;
|
|
my ($address, $properties) = validate_pos(@_, { type => ARRAYREF }, {type => HASHREF});
|
|
|
|
# Keep track of whether a new question is created along the way..
|
|
my $newQuestion = 0;
|
|
|
|
# Figure out what to do by counting the number of elements in the $address array ref
|
|
my $count = @{$address};
|
|
|
|
# First retrieve the addressed object, or, if necessary, create it
|
|
my $object;
|
|
if ( $count == 1 ) {
|
|
$object = $self->section($address);
|
|
if ( !defined $object ) {
|
|
$object = $self->newSection();
|
|
push @{ $self->sections }, $object;
|
|
}
|
|
}
|
|
elsif ( $count == 2 ) {
|
|
$object = $self->question($address);
|
|
if ( !defined $object ) {
|
|
$object = $self->newQuestion();
|
|
$newQuestion = 1; # make note that a new question was created
|
|
push @{ $self->questions($address) }, $object;
|
|
}
|
|
# We need to update all of the answers to reflect the new questionType
|
|
if ( $properties->{questionType} ne $object->{questionType} ) {
|
|
$self->updateQuestionAnswers( $address, $properties->{questionType} );
|
|
}
|
|
}
|
|
elsif ( $count == 3 ) {
|
|
$object = $self->answer($address);
|
|
if ( !defined $object ) {
|
|
$object = $self->newAnswer();
|
|
push @{ $self->answers($address) }, $object;
|
|
}
|
|
}
|
|
|
|
$self->_handleSpecialAnswerUpdates($address,$properties);
|
|
|
|
# Update $object with all of the data in $properties
|
|
while (my ($key, $value) = each %{$properties}) {
|
|
if (defined $value) {
|
|
$object->{$key} = $value;
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
sub _handleSpecialAnswerUpdates{
|
|
my $self = shift;
|
|
my $address = shift;
|
|
my $properties = shift;
|
|
my $question = $self->question($address);
|
|
if($question->{questionType} =~ /^Slider|Multi Slider - Allocate|Dual Slider - Range$/){
|
|
for my $answer(@{$self->answers($address)}){
|
|
$answer->{max} = $properties->{max};
|
|
$answer->{min} = $properties->{min};
|
|
$answer->{step} = $properties->{step};
|
|
}
|
|
}
|
|
}
|
|
|
|
=head2 insertObject ( $object, $address )
|
|
|
|
Rearrange existing objects in the current data structure.
|
|
Does not return anything significant.
|
|
|
|
=head3 $object
|
|
|
|
A perl hash reference. Note, that it is not checked for homegeneity,
|
|
so it is possible to add a "question" object into the list of section
|
|
objects.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
The number of elements in $address determines the behaviour:
|
|
|
|
=over 4
|
|
|
|
=item * 0 elements
|
|
|
|
Do Nothing
|
|
|
|
=item * 1 element
|
|
|
|
Reposition $object immediately after the indexed section
|
|
|
|
=item * 2 elements
|
|
|
|
Reposition $object immediately after the indexed question
|
|
|
|
=item * 3 elements
|
|
|
|
Reposition $object immediately after the indexed answer
|
|
|
|
=back
|
|
|
|
=cut
|
|
|
|
sub insertObject {
|
|
my $self = shift;
|
|
my ($object, $address) = validate_pos(@_, {type => HASHREF}, { type => ARRAYREF });
|
|
|
|
# Figure out what to do by counting the number of elements in the $address array ref
|
|
my $count = @{$address};
|
|
return if !$count;
|
|
|
|
# Use splice to rearrange the relevant array of objects..
|
|
if ( $count == 1 ) {
|
|
splice @{ $self->sections($address) }, sIndex($address) +1, 0, $object;
|
|
$address->[0]++;
|
|
}
|
|
elsif ( $count == 2 ) {
|
|
splice @{ $self->questions($address) }, qIndex($address) + 1, 0, $object;
|
|
$address->[1]++;
|
|
}
|
|
elsif ( $count == 3 ) {
|
|
splice @{ $self->answers($address) }, aIndex($address) + 1, 0, $object;
|
|
$address->[2]++;
|
|
}
|
|
|
|
return $address;
|
|
}
|
|
|
|
=head2 copy ( $address )
|
|
|
|
Duplicate the indexed section or question, and push the copy onto the end of the
|
|
list of existing items. Modifies $address. Returns $address with the last element changed
|
|
to the highest index in that array.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
The number of elements in $address determines the behaviour:
|
|
|
|
=over 4
|
|
|
|
=item * 1 element
|
|
|
|
Duplice the indexed section onto the end of the array of sections.
|
|
|
|
=item * 2 elements
|
|
|
|
Duplice the indexed question onto the end of the array of questions.
|
|
|
|
=item * 3 elements, or more
|
|
|
|
Nothing happens. It is not allowed to duplicate answers.
|
|
|
|
=back
|
|
|
|
=cut
|
|
|
|
sub copy {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF });
|
|
|
|
# Figure out what to do by counting the number of elements in the $address array ref
|
|
my $count = @{$address};
|
|
|
|
if ( $count == 1 ) {
|
|
# Clone the indexed section onto the end of the list of sections..
|
|
push @{ $self->sections }, clone $self->section($address);
|
|
|
|
# Update $address with the index of the newly created section
|
|
$address->[0] = $self->lastSectionIndex;
|
|
}
|
|
elsif ( $count == 2 ) {
|
|
# Clone the indexed question onto the end of the list of questions..
|
|
push @{ $self->questions($address) }, clone $self->question($address);
|
|
|
|
# Update $address with the index of the newly created question
|
|
$address->[1] = $self->lastQuestionIndex($address);
|
|
}
|
|
elsif ( $count == 3 ) {
|
|
# Clone the indexed answer onto the end of the list of answers..
|
|
push @{ $self->answers($address) }, clone $self->answer($address);
|
|
|
|
# Update $address with the index of the newly created answer
|
|
$address->[2]++;
|
|
}
|
|
# Return the (modified) $address
|
|
return $address;
|
|
}
|
|
|
|
=head2 remove ( $address, $movingOverride )
|
|
|
|
Delete the section/question/answer indexed by $address. Modifies $address if it has 1 or more elements.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
The number of elements in $address determines the behaviour:
|
|
|
|
=over 4
|
|
|
|
=item * 1 element
|
|
|
|
Remove the indexed section. Normally, the first section, index 0, cannot be removed. See $movingOverride below.
|
|
|
|
=item * 2 elements
|
|
|
|
Remove the indexed question
|
|
|
|
=item 3 elements
|
|
|
|
Remove the indexed answer
|
|
|
|
=back
|
|
|
|
=head3 $movingOverride
|
|
|
|
If $movingOverride is defined (meaning including 0 and ''), then the first section is allowed to be removed.
|
|
|
|
=cut
|
|
|
|
sub remove {
|
|
my $self = shift;
|
|
my ($address, $movingOverride) = validate_pos(@_, { type => ARRAYREF }, 0);
|
|
|
|
# Figure out what to do by counting the number of elements in the $address array ref
|
|
my $count = @{$address};
|
|
|
|
# Use splice to remove the indexed section/question/answer..
|
|
if ( $count == 1 ) {
|
|
# Make sure the first section isn't removed unless we REALLY want to
|
|
if ( sIndex($address) != 0 || defined $movingOverride ) {
|
|
splice @{ $self->sections }, sIndex($address), 1;
|
|
}
|
|
}
|
|
elsif ( $count == 2 ) {
|
|
splice @{ $self->questions($address) }, qIndex($address), 1;
|
|
}
|
|
elsif ( $count == 3 ) {
|
|
splice @{ $self->answers($address) }, aIndex($address), 1;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
=head2 newSection
|
|
|
|
Returns a reference to a new, empty section.
|
|
|
|
=cut
|
|
|
|
sub newSection {
|
|
return {
|
|
text => q{},
|
|
title => 'NEW SECTION', ##i18n
|
|
variable => q{},
|
|
questionsPerPage => 5,
|
|
questionsOnSectionPage => 1,
|
|
randomizeQuestions => 0,
|
|
logical => 0,
|
|
everyPageTitle => 1,
|
|
everyPageText => 1,
|
|
terminal => 0,
|
|
terminalUrl => q{},
|
|
goto => q{},
|
|
gotoExpression => q{},
|
|
timeLimit => 0,
|
|
type => 'section',
|
|
questions => [],
|
|
};
|
|
}
|
|
|
|
=head2 newQuestion
|
|
|
|
Returns a reference to a new, empty question.
|
|
|
|
=cut
|
|
|
|
sub newQuestion {
|
|
return {
|
|
text => q{},
|
|
variable => q{},
|
|
allowComment => 0,
|
|
commentCols => 10,
|
|
commentRows => 5,
|
|
randomizeAnswers => 0,
|
|
questionType => 'Multiple Choice',
|
|
randomWords => q{},
|
|
verticalDisplay => 0,
|
|
required => 0,
|
|
maxAnswers => 1,
|
|
value => 1,
|
|
textInButton => 0,
|
|
type => 'question',
|
|
answers => [],
|
|
goto => q{},
|
|
gotoExpression => q{},
|
|
};
|
|
}
|
|
|
|
=head2 newAnswer
|
|
|
|
Returns a reference to a new, empty answer.
|
|
|
|
=cut
|
|
|
|
sub newAnswer {
|
|
return {
|
|
text => q{},
|
|
verbatim => 0,
|
|
textCols => 10,
|
|
textRows => 5,
|
|
goto => q{},
|
|
gotoExpression => q{},
|
|
recordedAnswer => q{},
|
|
isCorrect => 1,
|
|
min => 1,
|
|
max => 10,
|
|
step => 1,
|
|
value => 1,
|
|
terminal => 0,
|
|
terminalUrl => q{},
|
|
type => 'answer'
|
|
};
|
|
}
|
|
|
|
=head2 updateQuestionAnswers ($address, $type);
|
|
|
|
Remove all existing answers and add a default set of answers to a question, based on question type.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">. Determines question to add answers to.
|
|
|
|
=head3 $type
|
|
|
|
The question type determines how many answers to add and what answer text (if any) to use
|
|
|
|
=cut
|
|
|
|
sub updateQuestionAnswers {
|
|
my $self = shift;
|
|
my ($address, $type) = validate_pos(@_, { type => ARRAYREF }, { type => SCALAR | UNDEF, optional => 1});
|
|
|
|
# Make a private copy of the $address arrayref that we can use locally
|
|
# when updating answer text without causing side-effects for the caller's $address
|
|
my @address_copy = @{$address};
|
|
|
|
# Get the indexed question, and remove all of its existing answers
|
|
my $question = $self->question($address);
|
|
$question->{answers} = [];
|
|
|
|
# Add the default set of answers. The question type determines both the number
|
|
# of answers added and the answer text to use. When updating answer text
|
|
# first update $address_copy to point to the answer
|
|
|
|
if ( $type eq 'Date Range'
|
|
or $type eq 'Multi Slider - Allocate'
|
|
or $type eq 'Dual Slider - Range' )
|
|
{
|
|
push @{ $question->{answers} }, $self->newAnswer();
|
|
push @{ $question->{answers} }, $self->newAnswer();
|
|
}
|
|
elsif ( $type eq 'Currency' ) {
|
|
push @{ $question->{answers} }, $self->newAnswer();
|
|
$address_copy[2] = 0;
|
|
$self->update( \@address_copy, { 'text', 'Currency Amount:' } );
|
|
}
|
|
elsif ( $type eq 'Text Date' ) {
|
|
push @{ $question->{answers} }, $self->newAnswer();
|
|
$address_copy[2] = 0;
|
|
$self->update( \@address_copy, { 'text', 'Date:' } );
|
|
}
|
|
elsif ( $type eq 'Phone Number' ) {
|
|
push @{ $question->{answers} }, $self->newAnswer();
|
|
$address_copy[2] = 0;
|
|
$self->update( \@address_copy, { 'text', 'Phone Number:' } );
|
|
}
|
|
elsif ( $type eq 'Email' ) {
|
|
push @{ $question->{answers} }, $self->newAnswer();
|
|
$address_copy[2] = 0;
|
|
$self->update( \@address_copy, { 'text', 'Email:' } );
|
|
}
|
|
elsif ( my $answerBundle = $self->getMultiChoiceBundle($type) ) {
|
|
# We found a known multi-choice bundle.
|
|
# Add the bundle of multi-choice answers
|
|
$self->addAnswersToQuestion( \@address_copy, $answerBundle );
|
|
} else {
|
|
# Default action is to add a single, default answer to the question
|
|
push @{ $question->{answers} }, $self->newAnswer();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
=head2 getMultiChoiceBundle
|
|
|
|
Returns a list of answer objects for each multi-choice bundle.
|
|
|
|
=cut
|
|
|
|
sub getMultiChoiceBundle {
|
|
my $self = shift;
|
|
my ($type) = validate_pos( @_, { type => SCALAR | UNDEF } );
|
|
|
|
return $self->{multipleChoiceTypes}->{$type};
|
|
}
|
|
|
|
=head2 addAnswersToQuestion ($address, $answers)
|
|
|
|
Helper routine for updateQuestionAnswers. Adds an array of answers to a question.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">. The address of the question to add answers to.
|
|
|
|
=head3 $answers
|
|
|
|
An array reference of answers to add. Each element will be assigned to the text field of
|
|
the answer that is created.
|
|
|
|
=cut
|
|
|
|
sub addAnswersToQuestion {
|
|
my $self = shift;
|
|
my ( $address, $answers )
|
|
= validate_pos( @_, { type => ARRAYREF }, { type => ARRAYREF } );
|
|
|
|
# Make a private copy of the $address arrayref that we can use locally
|
|
# when updating answer text without causing side-effects for the caller's $address
|
|
my @address_copy = @{$address};
|
|
|
|
for my $answer (@$answers) {
|
|
# Add a new answer to question
|
|
push @{ $self->question( \@address_copy )->{answers} }, $answer;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
=head2 sections
|
|
|
|
Returns a reference to all the sections in this object.
|
|
|
|
=cut
|
|
|
|
sub sections {
|
|
my $self = shift;
|
|
return $self->{_sections};
|
|
}
|
|
|
|
=head2 lastSectionIndex
|
|
|
|
Convenience method to return the index of the last Section. Frequently used to
|
|
iterate over all Sections. e.g. ( 0 .. lastSectionIndex )
|
|
|
|
=cut
|
|
|
|
sub lastSectionIndex {
|
|
my $self = shift;
|
|
return $self->totalSections(@_) - 1;
|
|
}
|
|
|
|
=head2 lastQuestionIndex
|
|
|
|
Convenience method to return the index of the last Question, overall, or in the
|
|
given Section if $address given. Frequently used to
|
|
iterate over all Questions. e.g. ( 0 .. lastQuestionIndex )
|
|
|
|
=head3 $address (optional)
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
=cut
|
|
|
|
sub lastQuestionIndex {
|
|
my $self = shift;
|
|
return $self->totalQuestions(@_) - 1;
|
|
}
|
|
|
|
=head2 lastQuestionIndex
|
|
|
|
Convenience method to return the index of the last Answer, overall, or in the
|
|
given Question if $address given. Frequently used to
|
|
iterate over all Answers. e.g. ( 0 .. lastAnswerIndex )
|
|
|
|
=head3 $address (optional)
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
=cut
|
|
|
|
sub lastAnswerIndex {
|
|
my $self = shift;
|
|
return $self->totalAnswers(@_) - 1;
|
|
}
|
|
|
|
=head2 totalSections
|
|
|
|
Returns the total number of Sections
|
|
|
|
=cut
|
|
|
|
sub totalSections {
|
|
my $self = shift;
|
|
return scalar @{ $self->sections || [] };
|
|
}
|
|
|
|
=head2 totalQuestions ($address)
|
|
|
|
Returns the total number of Questions, overall, or in the given Section if $address given
|
|
|
|
=head3 $address (optional)
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
=cut
|
|
|
|
sub totalQuestions {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF, optional => 1 });
|
|
|
|
if ($address) {
|
|
return scalar @{ $self->questions($address) || [] };
|
|
} else {
|
|
my $count = 0;
|
|
for my $sIndex (0 .. $self->lastSectionIndex) {
|
|
$count += $self->totalQuestions([$sIndex]);
|
|
}
|
|
return $count;
|
|
}
|
|
}
|
|
|
|
=head2 totalAnswers ($address)
|
|
|
|
Returns the total number of Answers overall, or in the given Question if $address given
|
|
|
|
=head3 $address (optional)
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
=cut
|
|
|
|
sub totalAnswers {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF, optional => 1 });
|
|
|
|
if ($address) {
|
|
return scalar @{ $self->answers($address) || [] };
|
|
} else {
|
|
my $count = 0;
|
|
for my $sIndex (0 .. $self->lastSectionIndex) {
|
|
for my $qIndex (0 .. $self->lastQuestionIndex([$sIndex])) {
|
|
$count += $self->totalAnswers([$sIndex, $qIndex]);
|
|
}
|
|
}
|
|
return $count;
|
|
}
|
|
}
|
|
|
|
=head2 validateSurvey ()
|
|
|
|
Returns an array of messages to inform a user what is logically wrong with the Survey
|
|
|
|
=cut
|
|
|
|
sub validateSurvey{
|
|
my $self = shift;
|
|
|
|
my @messages;
|
|
|
|
#set up valid goto targets
|
|
my $gotoTargets = $self->getGotoTargets();
|
|
my $goodTargets = {};
|
|
my $duplicateTargets;
|
|
for my $g (@{$gotoTargets}) {
|
|
$goodTargets->{$g}++;
|
|
$duplicateTargets->{$g}++ if $goodTargets->{$g} > 1;
|
|
}
|
|
|
|
#step through each section validating it.
|
|
my $sections = $self->sections();
|
|
|
|
for(my $s = 0; $s <= $#$sections; $s++){
|
|
my $sNum = $s + 1;
|
|
my $section = $self->section([$s]);
|
|
if(! $self->validateGoto($section,$goodTargets)){
|
|
push @messages,"Section $sNum has invalid Jump target: \"$section->{goto}\"";
|
|
}
|
|
if(! $self->validateGotoInfiniteLoop($section)){
|
|
push @messages,"Section $sNum jumps to itself.";
|
|
}
|
|
if(my $error = $self->validateGotoExpression($section,$goodTargets)){
|
|
push @messages,"Section $sNum has invalid Jump Expression: \"$section->{gotoExpression}\". Error: $error";
|
|
}
|
|
if(my @errors = $self->validateGotoPrecedenceRules($section, $section->{variable} || $sNum)){
|
|
push @messages,@errors;
|
|
}
|
|
if (my $var = $section->{variable}) {
|
|
if (my $count = $duplicateTargets->{$var}) {
|
|
push @messages, "Section $sNum variable name $var is re-used in $count other place(s).";
|
|
}
|
|
}
|
|
if($section->{logical} and @{$self->questions([$s])} > 0){
|
|
push @messages, "Section $sNum is a logical section with questions. Those questions will never be shown.";
|
|
}
|
|
|
|
#step through each question validating it.
|
|
my $questions = $self->questions([$s]);
|
|
for(my $q = 0; $q <= $#$questions; $q++){
|
|
my $qNum = $q + 1;
|
|
my $question = $self->question([$s,$q]);
|
|
if(! $self->validateGoto($question,$goodTargets)){
|
|
push @messages,"Section $sNum Question $qNum has invalid Jump target: \"$question->{goto}\"";
|
|
}
|
|
if(! $self->validateGotoInfiniteLoop($question)){
|
|
push @messages,"Section $sNum Question $qNum jumps to itself.";
|
|
}
|
|
if(my $error = $self->validateGotoExpression($question,$goodTargets)){
|
|
push @messages,"Section $sNum Question $qNum has invalid Jump Expression: \"$question->{gotoExpression}\". Error: $error";
|
|
}
|
|
if($#{$question->{answers}} < 0){
|
|
push @messages,"Section $sNum Question $qNum does not have any answers.";
|
|
}
|
|
if(! $question->{text} =~ /\w/){
|
|
push @messages,"Section $sNum Question $qNum does not have any text.";
|
|
}
|
|
if (my $var = $question->{variable}) {
|
|
if (my $count = $duplicateTargets->{$var}) {
|
|
push @messages, "Section $sNum Question $qNum variable name $var is re-used in $count other place(s).";
|
|
}
|
|
}
|
|
|
|
#step through each answer validating it.
|
|
my $answers = $self->answers([$s,$q]);
|
|
for(my $a = 0; $a <= $#$answers; $a++){
|
|
my $aNum = $a + 1;
|
|
my $answer = $self->answer([$s,$q,$a]);
|
|
if(! $self->validateGoto($answer,$goodTargets)){
|
|
push @messages,"Section $sNum Question $qNum Answer $aNum has invalid Jump target: \"$answer->{goto}\"";
|
|
}
|
|
if(! $self->validateGotoInfiniteLoop($answer)){
|
|
push @messages,"Section $sNum Question $qNum Answer $aNum jumps to itself.";
|
|
}
|
|
if(my $error = $self->validateGotoExpression($answer,$goodTargets)){
|
|
push @messages,"Section $sNum Question $qNum Answer $aNum has invalid Jump Expression: \"$answer->{gotoExpression}\". Error: $error";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return \@messages;
|
|
}
|
|
|
|
sub validateGoto{
|
|
my $self = shift;
|
|
my $object = shift;
|
|
my $goodTargets = shift;
|
|
return 0 if($object->{goto} =~ /\w/ && ! exists($goodTargets->{$object->{goto}}));
|
|
return 1;
|
|
}
|
|
|
|
sub validateGotoInfiniteLoop{
|
|
my $self = shift;
|
|
my $object = shift;
|
|
return 0 if($object->{goto} =~ /\w/ and $object->{goto} eq $object->{variable});
|
|
return 1;
|
|
}
|
|
|
|
sub validateGotoExpression{
|
|
my $self = shift;
|
|
my $object = shift;
|
|
my $goodTargets = shift;
|
|
return unless $object->{gotoExpression};
|
|
|
|
if (!$self->session->config->get('enableSurveyExpressionEngine')) {
|
|
return 'enableSurveyExpressionEngine is disabled in your site config!';
|
|
}
|
|
|
|
use WebGUI::Asset::Wobject::Survey::ExpressionEngine;
|
|
my $engine = "WebGUI::Asset::Wobject::Survey::ExpressionEngine";
|
|
return $engine->run($self->session, $object->{gotoExpression}, { validate => 1, validTargets => $goodTargets } );
|
|
}
|
|
|
|
sub validateGotoPrecedenceRules {
|
|
my $self = shift;
|
|
my $s = shift;
|
|
my $sLabel = shift;
|
|
my @errors;
|
|
my $endMsg = 'Precedence rules will apply.';
|
|
|
|
my $hasSection
|
|
= $s->{goto} =~ /\w/ ? 'Jump Target'
|
|
: $s->{gotoExpression} =~ /\w/ ? 'Jump Expression'
|
|
: '';
|
|
my $qNum = 0;
|
|
for my $q (@{$s->{questions}}) {
|
|
$qNum++;
|
|
my $qLabel = $q->{variable} || "Question $qNum";
|
|
my $hasQuestion
|
|
= $q->{goto} =~ /\w/ ? 'Jump Target'
|
|
: $q->{gotoExpression} =~ /\w/ ? 'jump Expression'
|
|
: '';
|
|
if ( $hasSection && $hasQuestion) {
|
|
push @errors, "You have a $hasSection at $sLabel and a $hasQuestion at $qLabel. $endMsg";
|
|
}
|
|
my $aNum = 0;
|
|
for my $a (@{$q->{answers}}) {
|
|
$aNum++;
|
|
my $aLabel = "Answer $aNum";
|
|
my $hasAnswer
|
|
= $a->{goto} =~ /\w/ ? 'Jump Target'
|
|
: $a->{gotoExpression} =~ /\w/ ? 'Jump Expression'
|
|
: '';
|
|
if ( $hasSection && $hasAnswer) {
|
|
push @errors, "You have a $hasSection at $sLabel and a $hasAnswer at $aLabel. $endMsg";
|
|
}
|
|
if ( $hasQuestion && $hasAnswer) {
|
|
push @errors, "You have a $hasQuestion at $qLabel and a $hasAnswer at $aLabel. $endMsg";
|
|
}
|
|
}
|
|
}
|
|
return @errors;
|
|
}
|
|
|
|
=head2 section ($address)
|
|
|
|
Returns a reference to one section.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
=cut
|
|
|
|
sub section {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF});
|
|
|
|
return $self->sections->[ $address->[0] ];
|
|
}
|
|
|
|
=head2 session
|
|
|
|
Accessor method for the local WebGUI::Session reference
|
|
|
|
=cut
|
|
|
|
sub session {
|
|
my $self = shift;
|
|
return $self->{_session};
|
|
}
|
|
|
|
=head2 questions ($address)
|
|
|
|
Returns a reference to all the questions from a particular section.
|
|
|
|
=head3 $address (optional)
|
|
|
|
See L<"Address Parameter">. If not defined, returns all questions.
|
|
|
|
=cut
|
|
|
|
sub questions {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF, optional => 1});
|
|
|
|
if ($address) {
|
|
return $self->sections->[ $address->[0] ]->{questions};
|
|
} else {
|
|
my $questions;
|
|
push @$questions, @{$_->{questions} || []} for @{$self->sections};
|
|
return $questions;
|
|
}
|
|
}
|
|
|
|
=head2 question ($address)
|
|
|
|
Return a reference to one question from a particular section.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
=cut
|
|
|
|
sub question {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF});
|
|
|
|
return $self->sections->[ $address->[0] ]->{questions}->[ $address->[1] ];
|
|
}
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 questionCount (){
|
|
|
|
Return the total number of questions in this survey.
|
|
|
|
=cut
|
|
|
|
sub questionCount {
|
|
my $self = shift;
|
|
my $count;
|
|
for ( my $s = 0; $s <= $#{ $self->sections() }; $s++ ) {
|
|
$count = $count + scalar @{$self->questions( [$s] )};
|
|
}
|
|
return $count;
|
|
}
|
|
|
|
#-------------------------------------------------------------------
|
|
|
|
=head2 answers ($address)
|
|
|
|
Return a reference to all answers from a particular question.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
=cut
|
|
|
|
sub answers {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF});
|
|
|
|
return $self->sections->[ $address->[0] ]->{questions}->[ $address->[1] ]->{answers};
|
|
}
|
|
|
|
=head2 answer ($address)
|
|
|
|
Return a reference to one answer from a particular question and section.
|
|
|
|
=head3 $address
|
|
|
|
See L<"Address Parameter">.
|
|
|
|
=cut
|
|
|
|
sub answer {
|
|
my $self = shift;
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF});
|
|
|
|
return $self->sections->[ $address->[0] ]->{questions}->[ $address->[1] ]->{answers}->[ $address->[2] ];
|
|
}
|
|
|
|
=head2 sIndex ($address)
|
|
|
|
Convenience sub to extract the section index from a standard $address parameter. See L<"Address Parameter">.
|
|
This method exists purely to improve code readability.
|
|
|
|
=cut
|
|
|
|
sub sIndex {
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF});
|
|
return $address->[0];
|
|
}
|
|
|
|
=head2 qIndex ($address)
|
|
|
|
Convenience sub to extract the question index from a standard $address parameter. See L<"Address Parameter">.
|
|
This method exists purely to improve code readability.
|
|
|
|
=cut
|
|
|
|
sub qIndex {
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF});
|
|
return $address->[1];
|
|
}
|
|
|
|
=head2 aIndex ($address)
|
|
|
|
Convenience sub to extract the answer index from a standard $address parameter. See L<"Address Parameter">.
|
|
This method exists purely to improve code readability.
|
|
|
|
=cut
|
|
|
|
sub aIndex {
|
|
my ($address) = validate_pos(@_, { type => ARRAYREF});
|
|
return $address->[2];
|
|
}
|
|
|
|
1;
|