1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
package HTML::FormFu::Constraint::File;
use Moose;
extends 'HTML::FormFu::Constraint';
use Scalar::Util qw( blessed );
sub constrain_value {
my ( $self, $value ) = @_;
return 1 if !defined $value || $value eq '';
return blessed($value) && $value->isa('HTML::FormFu::Upload');
}
__PACKAGE__->meta->make_immutable;
1;
__END__
=head1 NAME
HTML::FormFu::Constraint::File - File Upload Constraint
=head1 DESCRIPTION
Ensure the submitted value is a file upload.
This Constraint is not needed if you use any of the C<File::*> Constraints,
as they all make the same check as this Constraint does.
=head1 LIMITATIONS
This can only verify that your CGI backend (CGI, Catalyst, CGI::Simple)
thinks it was a file upload. If the user submits a filename which doesn't
exist on their system, you will probably get a valid L<HTML::FormFu::Upload>
object, with a valid filehandle, but no Content-Length. This Constraint
would still see this as a valid uploaded file - if you want to ensure that
you get a file with content, instead use
L<HTML::FormFu::Constraint::File::Size> with
L<min|HTML::FormFu::Constraint::File::Size/min> set to C<1>.
=head1 SEE ALSO
Is a sub-class of, and inherits methods from L<HTML::FormFu::Constraint>
L<HTML::FormFu>
=head1 AUTHOR
Carl Franks, C<cfranks@cpan.org>
=head1 LICENSE
This library is free software, you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
|
