/
FormFu.pm
3145 lines (2112 loc) · 78 KB
/
FormFu.pm
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package HTML::FormFu;
use strict;
use base 'HTML::FormFu::base';
use HTML::FormFu::Attribute qw(
mk_attrs mk_attr_accessors
mk_inherited_accessors mk_output_accessors
mk_inherited_merging_accessors
mk_item_accessors mk_accessors
);
use HTML::FormFu::Constants qw( $EMPTY_STR );
use HTML::FormFu::Constraint;
use HTML::FormFu::Exception;
use HTML::FormFu::FakeQuery;
use HTML::FormFu::Filter;
use HTML::FormFu::Inflator;
use HTML::FormFu::Localize;
use HTML::FormFu::ObjectUtil qw(
:FORM_AND_BLOCK :FORM_AND_ELEMENT
populate form
load_config_file load_config_filestem
clone stash
constraints_from_dbic parent
get_nested_hash_value set_nested_hash_value
nested_hash_key_exists
);
use HTML::FormFu::Util qw(
require_class _get_elements
xml_escape split_name
_parse_args process_attrs
_filter_components
);
use List::Util qw( first );
use List::MoreUtils qw( any none uniq );
use Scalar::Util qw( blessed refaddr weaken );
use Storable qw( dclone );
use Regexp::Copy;
use Carp qw( croak );
use overload (
'eq' => sub { refaddr $_[0] eq refaddr $_[1] },
'ne' => sub { refaddr $_[0] ne refaddr $_[1] },
'==' => sub { refaddr $_[0] eq refaddr $_[1] },
'!=' => sub { refaddr $_[0] ne refaddr $_[1] },
'""' => sub { return shift->render },
'bool' => sub {1},
'fallback' => 1,
);
__PACKAGE__->mk_attrs( qw( attributes ) );
__PACKAGE__->mk_attr_accessors( qw( id action enctype method ) );
__PACKAGE__->mk_item_accessors( qw(
indicator
filename
query_type
force_error_message
localize_class
query
input
_auto_fieldset
_elements
_processed_params
_output_processors
tt_module
nested_name
nested_subscript
default_model
tmp_upload_dir
params_ignore_underscore
_plugins
) );
__PACKAGE__->mk_accessors( qw(
javascript
javascript_src
languages
submitted
_valid_names
_models
) );
__PACKAGE__->mk_output_accessors( qw( form_error_message ) );
__PACKAGE__->mk_inherited_accessors( qw(
auto_id auto_label
auto_error_class auto_error_message
auto_constraint_class auto_inflator_class
auto_validator_class auto_transformer_class
render_method render_processed_value
force_errors repeatable_count
config_file_path
) );
__PACKAGE__->mk_inherited_merging_accessors( qw( tt_args config_callback ) );
*elements = \&element;
*constraints = \&constraint;
*filters = \&filter;
*deflators = \&deflator;
*inflators = \&inflator;
*validators = \&validator;
*transformers = \&transformer;
*output_processors = \&output_processor;
*loc = \&localize;
*plugins = \&plugin;
*add_plugins = \&add_plugin;
our $VERSION = '0.03007';
$VERSION = eval $VERSION;
Class::C3::initialize();
sub new {
my ( $class, $argument_ref ) = @_;
my %defaults = (
_elements => [],
_output_processors => [],
_valid_names => [],
_plugins => [],
_models => [],
_processed_params => {},
input => {},
stash => {},
action => '',
method => 'post',
filename => 'form',
default_args => {},
render_method => 'string',
tt_args => {},
tt_module => 'Template',
query_type => 'CGI',
languages => ['en'],
default_model => 'DBIC',
localize_class => 'HTML::FormFu::I18N',
auto_error_class => 'error_%s_%t',
auto_error_message => 'form_%s_%t',
);
my $self = bless {}, $class;
$self->populate( \%defaults );
if ($argument_ref) {
$self->populate( $argument_ref );
}
return $self;
}
sub auto_fieldset {
my ( $self, $element_ref ) = @_;
# if there's no arg, just return whether there's an auto_fieldset already
return $self->_auto_fieldset if !$element_ref;
# if the argument isn't a reference, assume it's just a "1" meaning true,
# and use an empty hashref
if ( !ref $element_ref ) {
$element_ref = {};
}
$element_ref->{type} = 'Fieldset';
$self->element( $element_ref );
$self->_auto_fieldset(1);
return $self;
}
sub default_values {
my ( $self, $default_ref ) = @_;
for my $field ( @{ $self->get_fields } ) {
my $name = $field->nested_name;
next if !defined $name;
next if !exists $default_ref->{$name};
$field->default( $default_ref->{$name} );
}
return $self;
}
sub model {
my ( $self, $model_name ) = @_;
$model_name ||= $self->default_model;
# search models already loaded
for my $model ( @{ $self->_models } ) {
return $model
if $model->type =~ /\Q$model_name\E$/;
}
# class not found, try require-ing it
my $class = $model_name =~ s/^\+// ? $model_name
: "HTML::FormFu::Model::$model_name"
;
require_class($class);
my $model = $class->new( {
type => $model_name,
parent => $self,
} );
push @{ $self->_models }, $model;
return $model;
}
sub model_class {
my $self = shift;
warn
"model_class() method deprecated and is provided for compatibilty only, "
. "and will be removed: use default_model instead\n";
return $self->default_model(@_);
}
sub defaults_from_model {
my $self = shift;
warn
"defaults_from_model() method deprecated and is provided for compatibility only, "
. "and will be removed: use \$form->model->default_values() instead\n";
return $self->model->default_values(@_);
}
sub save_to_model {
my $self = shift;
warn
"save_to_model() method deprecated and is provided for compatibility only, "
. "and will be removed: use \$form->model->update() instead\n";
return $self->model->update(@_);
}
sub process {
my ( $self, $query ) = @_;
$self->input ( {} );
$self->_processed_params( {} );
$self->_valid_names ( [] );
$self->clear_errors;
$query ||= $self->query;
if ( defined $query && !blessed($query) ) {
$query = HTML::FormFu::FakeQuery->new( $self, $query );
}
# save it for further calls to process()
if ($query) {
$self->query($query);
}
# run all plugins process() methods
my $plugins = $self->get_plugins;
for my $plugin (@$plugins) {
$plugin->process;
}
for my $elem ( @{ $self->get_elements } ) {
$elem->process;
}
my $submitted;
if ( defined $query ) {
eval { my @params = $query->param };
croak "Invalid query object: $@" if $@;
$submitted = $self->_submitted($query);
}
$self->submitted($submitted);
if ($submitted) {
my %input;
my @params = $query->param;
for my $field ( @{ $self->get_fields } ) {
my $name = $field->nested_name;
next if !defined $name;
next if none { $name eq $_ } @params;
if ( $field->nested ) {
# call in list context so we know if there's more than 1 value
my @values = $query->param($name);
my $value = @values > 1 ? \@values
: $values[0]
;
$self->set_nested_hash_value( \%input, $name, $value );
}
else {
my @values = $query->param($name);
$input{$name} = @values > 1 ? \@values
: $values[0]
;
}
}
# run all field-plugins process_input methods
for my $field ( @{ $self->get_fields } ) {
$field->process_input( \%input );
}
$self->input( \%input );
$self->_process_input;
}
# run all plugins post_process methods
for my $elem ( @{ $self->get_elements } ) {
$elem->post_process;
}
for my $plugin (@$plugins) {
$plugin->post_process;
}
return;
}
sub _submitted {
my ( $self, $query ) = @_;
my $indicator = $self->indicator;
my $code;
if ( defined($indicator) && ref $indicator ne 'CODE' ) {
$code = sub { return defined $query->param($indicator) };
}
elsif ( !defined $indicator ) {
my @names =
uniq
grep {defined}
map { $_->nested_name }
@{ $self->get_fields };
$code = sub {
grep { defined $query->param($_) } @names;
};
}
else {
$code = $indicator;
}
return $code->( $self, $query );
}
sub _process_input {
my ($self) = @_;
$self->_build_params;
$self->_process_file_uploads;
$self->_filter_input;
$self->_constrain_input;
$self->_inflate_input if !@{ $self->get_errors };
$self->_validate_input if !@{ $self->get_errors };
$self->_transform_input if !@{ $self->get_errors };
$self->_build_valid_names;
return;
}
sub _build_params {
my ($self) = @_;
my $input = $self->input;
my %params;
for my $field ( @{ $self->get_fields } ) {
my $name = $field->nested_name;
next if !defined $name;
next if exists $params{$name};
next
if !$self->nested_hash_key_exists( $self->input, $name )
&& !$field->default_empty_value;
my $input = $self->get_nested_hash_value( $self->input, $name );
if ( ref $input eq 'ARRAY' ) {
# can't clone upload filehandles
# so create new arrayref of values
$input = [@$input];
}
elsif ( !defined $input && $field->default_empty_value ) {
$input = '';
}
$self->set_nested_hash_value( \%params, $name, $input, $name );
}
$self->_processed_params( \%params );
return;
}
sub _process_file_uploads {
my ($self) = @_;
my @names =
uniq
grep { defined }
map { $_->nested_name }
grep { $_->isa('HTML::FormFu::Element::File') }
@{ $self->get_fields };
if (@names) {
my $query_class = $self->query_type;
if ( $query_class !~ /^\+/ ) {
$query_class = "HTML::FormFu::QueryType::$query_class";
}
require_class($query_class);
my $params = $self->_processed_params;
my $input = $self->input;
for my $name (@names) {
next if !$self->nested_hash_key_exists( $input, $name );
my $values = $query_class->parse_uploads( $self, $name );
$self->set_nested_hash_value( $params, $name, $values );
}
}
return;
}
sub _filter_input {
my ($self) = @_;
my $params = $self->_processed_params;
for my $filter ( @{ $self->get_filters } ) {
my $name = $filter->nested_name;
next if !defined $name;
next if !$self->nested_hash_key_exists( $params, $name );
$filter->process( $self, $params );
}
return;
}
sub _constrain_input {
my ($self) = @_;
my $params = $self->_processed_params;
for my $constraint ( @{ $self->get_constraints } ) {
my @errors = eval { $constraint->process($params) };
if ( blessed $@ && $@->isa('HTML::FormFu::Exception::Constraint') ) {
push @errors, $@;
}
elsif ($@) {
push @errors, HTML::FormFu::Exception::Constraint->new;
}
for my $error (@errors) {
if ( !$error->parent ) {
$error->parent( $constraint->parent );
}
if ( !$error->constraint ) {
$error->constraint($constraint);
}
$error->parent->add_error($error);
}
}
return;
}
sub _inflate_input {
my ($self) = @_;
my $params = $self->_processed_params;
for my $inflator ( @{ $self->get_inflators } ) {
my $name = $inflator->nested_name;
next if !defined $name;
next if !$self->nested_hash_key_exists( $params, $name );
next if any { defined } @{ $inflator->parent->get_errors };
my $value = $self->get_nested_hash_value( $params, $name );
my @errors;
( $value, @errors ) = eval { $inflator->process($value) };
if ( blessed $@ && $@->isa('HTML::FormFu::Exception::Inflator') ) {
push @errors, $@;
}
elsif ($@) {
push @errors, HTML::FormFu::Exception::Inflator->new;
}
for my $error (@errors) {
$error->parent( $inflator->parent ) if !$error->parent;
$error->inflator($inflator) if !$error->inflator;
$error->parent->add_error($error);
}
$self->set_nested_hash_value( $params, $name, $value );
}
return;
}
sub _validate_input {
my ($self) = @_;
my $params = $self->_processed_params;
for my $validator ( @{ $self->get_validators } ) {
my $name = $validator->nested_name;
next if !defined $name;
next if !$self->nested_hash_key_exists( $params, $name );
next if any { defined } @{ $validator->parent->get_errors };
my @errors = eval { $validator->process($params) };
if ( blessed $@ && $@->isa('HTML::FormFu::Exception::Validator') ) {
push @errors, $@;
}
elsif ($@) {
push @errors, HTML::FormFu::Exception::Validator->new;
}
for my $error (@errors) {
$error->parent( $validator->parent ) if !$error->parent;
$error->validator($validator) if !$error->validator;
$error->parent->add_error($error);
}
}
return;
}
sub _transform_input {
my ($self) = @_;
my $params = $self->_processed_params;
for my $transformer ( @{ $self->get_transformers } ) {
my $name = $transformer->nested_name;
next if !defined $name;
next if !$self->nested_hash_key_exists( $params, $name );
next if any { defined } @{ $transformer->parent->get_errors };
my $value = $self->get_nested_hash_value( $params, $name );
my ( @errors ) = eval { $transformer->process( $value, $params ) };
if ( blessed $@ && $@->isa('HTML::FormFu::Exception::Transformer') ) {
push @errors, $@;
}
elsif ($@) {
push @errors, HTML::FormFu::Exception::Transformer->new;
}
for my $error (@errors) {
$error->parent( $transformer->parent ) if !$error->parent;
$error->transformer($transformer) if !$error->transformer;
$error->parent->add_error($error);
}
}
return;
}
sub _build_valid_names {
my ($self) = @_;
my $params = $self->_processed_params;
my $skip_private = $self->params_ignore_underscore;
my @errors = $self->has_errors;
my @names;
my %non_param;
for my $field ( @{ $self->get_fields } ) {
my $name = $field->nested_name;
next if !defined $name;
next if $skip_private && $field->name =~ /^_/;
if ( $field->non_param ) {
$non_param{$name} = 1;
}
elsif ( $self->nested_hash_key_exists( $params, $name ) ) {
push @names, $name;
}
}
push @names,
uniq
grep { ref $params->{$_} ne 'HASH' }
grep { !( $skip_private && /^_/ ) }
grep { !exists $non_param{$_} }
keys %$params
;
my %valid;
CHECK:
for my $name (@names) {
for my $error (@errors) {
next CHECK if $name eq $error;
}
$valid{$name}++;
}
my @valid = keys %valid;
$self->_valid_names( \@valid );
return;
}
sub _hash_keys {
my ( $hash, $subscript ) = @_;
my @names;
for my $key ( keys %$hash ) {
if ( ref $hash->{$key} eq 'HASH' ) {
push @names,
map { $subscript ? "${key}[${_}]" : "$key.$_" }
_hash_keys( $hash->{$key}, $subscript );
}
elsif ( ref $hash->{$key} eq 'ARRAY' ) {
push @names,
map { $subscript ? "${key}[${_}]" : "$key.$_" }
_array_indices( $hash->{$key}, $subscript );
}
else {
push @names, $key;
}
}
return @names;
}
sub _array_indices {
my ( $array, $subscript ) = @_;
my @names;
for my $i ( 0 .. $#{$array} ) {
if ( ref $array->[$i] eq 'HASH' ) {
push @names,
map { $subscript ? "${i}[${_}]" : "$i.$_" }
_hash_keys( $array->[$i], $subscript );
}
elsif ( ref $array->[$i] eq 'ARRAY' ) {
push @names,
map { $subscript ? "${i}[${_}]" : "$i.$_" }
_array_indices( $array->[$i], $subscript );
}
else {
push @names, $i;
}
}
return @names;
}
sub submitted_and_valid {
my ($self) = @_;
return $self->submitted && !$self->has_errors;
}
sub params {
my ($self) = @_;
return {} if !$self->submitted;
my @names = $self->valid;
my %params;
for my $name (@names) {
my @values = $self->param($name);
if ( @values > 1 ) {
$self->set_nested_hash_value( \%params, $name, \@values );
}
else {
$self->set_nested_hash_value( \%params, $name, $values[0] );
}
}
return \%params;
}
sub param {
my ( $self, $name ) = @_;
croak 'param method is readonly' if @_ > 2;
return if !$self->submitted;
if ( @_ == 2 ) {
return if !$self->valid($name);
my $value
= $self->get_nested_hash_value( $self->_processed_params, $name );
return if !defined $value;
if ( ref $value eq 'ARRAY' ) {
return wantarray ? @$value : $value->[0];
}
else {
return $value;
}
}
# return a list of valid names, if no $name arg
return $self->valid;
}
sub param_value {
my ( $self, $name ) = @_;
croak 'name parameter required' if @_ != 2;
# ignore $form->valid($name) and $form->submitted
# this is guaranteed to always return a single value
# or undef
my $value = $self->get_nested_hash_value( $self->_processed_params, $name );
return ref $value eq 'ARRAY'
? $value->[0]
: $value;
}
sub param_array {
my ( $self, $name ) = @_;
croak 'name parameter required' if @_ != 2;
# guaranteed to always return an arrayref
return [] if !$self->valid($name);
my $value = $self->get_nested_hash_value( $self->_processed_params, $name );
return [] if !defined $value;
return ref $value eq 'ARRAY'
? $value
: [$value];
}
sub param_list {
my ( $self, $name ) = @_;
croak 'name parameter required' if @_ != 2;
# guaranteed to always return an arrayref
return if !$self->valid($name);
my $value = $self->get_nested_hash_value( $self->_processed_params, $name );
return if !defined $value;
return ref $value eq 'ARRAY'
? @$value
: $value;
}
sub valid {
my $self = shift;
return if !$self->submitted;
my @valid = @{ $self->_valid_names };
if (@_) {
my $name = shift;
return 1 if any { $name eq $_ } @valid;
# not found - see if it's the name of a nested block
my $parent;
if ( defined $self->nested_name && $self->nested_name eq $name ) {
$parent = $self;
}
else {
($parent)
= first { $_->isa('HTML::FormFu::Element::Block') }
@{ $self->get_all_elements( { nested_name => $name, } ) };
}
if ( defined $parent ) {
my $fail = any { defined }
map { @{ $_->get_errors } }
@{ $parent->get_fields };
return 1 if !$fail;
}
return;
}
# return a list of valid names, if no $name arg
return @valid;
}
sub has_errors {
my $self = shift;
return if !$self->submitted;
my @names = map { $_->nested_name }
grep { @{ $_->get_errors } }
grep { defined $_->nested_name }
@{ $self->get_fields }
;
if (@_) {
my $name = shift;
return 1 if any { /\Q$name/ } @names;
return;
}
# return list of names with errors, if no $name arg
return @names;
}
sub add_valid {
my ( $self, $key, $value ) = @_;
croak 'add_valid requires arguments ($key, $value)' if @_ != 3;
$self->set_nested_hash_value( $self->input, $key, $value );
$self->set_nested_hash_value( $self->_processed_params, $key, $value );
if ( none { $_ eq $key } @{ $self->_valid_names } ) {
push @{ $self->_valid_names }, $key;
}
return $value;
}
sub _single_plugin {
my ( $self, $arg_ref ) = @_;
if ( !ref $arg_ref ) {
$arg_ref = { type => $arg_ref };
}
elsif ( ref $arg_ref eq 'HASH' ) {
# shallow clone
$arg_ref = {%$arg_ref};
}
else {
croak 'invalid args';
}
my $type = delete $arg_ref->{type};
my @return;
my @names = map { ref $_ ? @$_ : $_ }
grep { defined }
( delete $arg_ref->{name}, delete $arg_ref->{names} )
;
if (@names) {
# add plugins to appropriate fields
for my $x (@names) {
for my $field ( @{ $self->get_fields( { nested_name => $x } ) } ) {
my $new = $field->_require_plugin( $type, $arg_ref );
push @{ $field->_plugins }, $new;
push @return, $new;
}
}
}
else {
# add plugin directly to form
my $new = $self->_require_plugin( $type, $arg_ref );
push @{ $self->_plugins }, $new;
push @return, $new;
}
return @return;
}
sub render {
my $self = shift;
my $plugins = $self->get_plugins;
for my $plugin (@$plugins) {
$plugin->render;
}
my $output = $self->next::method(@_);
for my $plugin (@$plugins) {
$plugin->post_render( \$output );
}
return $output;
}
sub render_data {
my ( $self, $args ) = @_;
my $render = $self->render_data_non_recursive( {
elements => [ map { $_->render_data } @{ $self->_elements } ],
$args ? %$args : (),
} );
return $render;
}
sub render_data_non_recursive {
my ( $self, $args ) = @_;
my %render = (
filename => $self->filename,
javascript => $self->javascript,
javascript_src => $self->javascript_src,
attributes => xml_escape( $self->attributes ),
stash => $self->stash,
$args ? %$args : (),
);
$render{form} = \%render;
weaken( $render{form} );
$render{object} = $self;
if ( $self->force_error_message
|| ( $self->has_errors
&& defined $self->form_error_message
)
)
{
$render{form_error_message} = xml_escape( $self->form_error_message );
}
return \%render;
}
sub string {
my ( $self, $args_ref ) = @_;
$args_ref ||= {};
# start_form template
my $render_ref
= exists $args_ref->{render_data}
? $args_ref->{render_data}
: $self->render_data_non_recursive
;
my $html = sprintf "<form%s>", process_attrs( $render_ref->{attributes} );
if ( defined $render_ref->{form_error_message} ) {
$html .= sprintf qq{\n<div class="form_error_message">%s</div>},
$render_ref->{form_error_message},