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package HTML::FormHandler::Field::Upload;
# ABSTRACT: file upload field
use Moose;
use Moose::Util::TypeConstraints;
extends 'HTML::FormHandler::Field';
our $VERSION = '0.02';
has '+widget' => ( default => 'Upload', );
has min_size => ( is => 'rw', isa => 'Maybe[Int]', default => 1 );
has max_size => ( is => 'rw', isa => 'Maybe[Int]', default => 1048576 );
has '+type_attr' => ( default => 'file' );
our $class_messages = {
'upload_file_not_found' => 'File not found for upload field',
'upload_file_empty' => 'File uploaded is empty',
'upload_file_too_small' => 'File is too small (< [_1] bytes)',
'upload_file_too_big' => 'File is too big (> [_1] bytes)',
};
sub get_class_messages {
my $self = shift;
return {
%{ $self->next::method },
%$class_messages,
}
}
sub validate {
my $self = shift;
my $upload = $self->value;
my $size = 0;
if( blessed $upload && $upload->can('size') ) {
$size = $upload->size;
}
elsif( is_real_fh( $upload ) ) {
$size = -s $upload;
}
else {
return $self->add_error($self->get_message('upload_file_not_found'));
}
return $self->add_error($self->get_message('upload_file_empty'))
unless $size > 0;
if( defined $self->min_size && $size < $self->min_size ) {
$self->add_error( $self->get_message('upload_file_too_small'), $self->min_size );
}
if( defined $self->max_size && $size > $self->max_size ) {
$self->add_error( $self->get_message('upload_file_too_big'), $self->max_size );
}
return;
}
# stolen from Plack::Util::is_real_fh
sub is_real_fh {
my $fh = shift;
my $reftype = Scalar::Util::reftype($fh) or return;
if( $reftype eq 'IO'
or $reftype eq 'GLOB' && *{$fh}{IO} ){
my $m_fileno = $fh->fileno;
return unless defined $m_fileno;
return unless $m_fileno >= 0;
my $f_fileno = fileno($fh);
return unless defined $f_fileno;
return unless $f_fileno >= 0;
return 1;
}
else {
return;
}
}
__PACKAGE__->meta->make_immutable;
use namespace::autoclean;
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
HTML::FormHandler::Field::Upload - file upload field
=head1 VERSION
version 0.40057
=head1 DESCRIPTION
This field is designed to be used with a blessed object with a 'size' method,
such as L<Catalyst::Request::Upload>, or a filehandle.
Validates that the file is not empty and is within the 'min_size'
and 'max_size' limits (limits are in bytes).
A form containing this field must have the enctype set.
package My::Form::Upload;
use HTML::FormHandler::Moose;
extends 'HTML::FormHandler';
has '+enctype' => ( default => 'multipart/form-data');
has_field 'file' => ( type => 'Upload', max_size => '2000000' );
has_field 'submit' => ( type => 'Submit', value => 'Upload' );
In your controller:
my $form = My::Form::Upload->new;
my @params = ( file => $c->req->upload('file') )
if $c->req->method eq 'POST';
$form->process( params => { @params } );
return unless ( $form->validated );
You can set the min_size and max_size limits to undef if you don't want them to be validated.
=head1 DEPENDENCIES
=head2 widget
Widget type is 'upload'
=head1 AUTHOR
FormHandler Contributors - see HTML::FormHandler
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2014 by Gerda Shank.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
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