Using with Data::Sah

To check data against this schema (requires Data::Sah):

use Data::Sah qw(gen_validator);
my \$validator = gen_validator("$sch_name*");
say \$validator->(\$data) ? "valid" : "INVALID!";

The above validator returns a boolean result (true if data is valid, false if otherwise). To return an error message string instead (empty string if data is valid, a non-empty error message otherwise):

my \$validator = gen_validator("$sch_name", {return_type=>'str_errmsg'});
my \$errmsg = \$validator->(\$data);
_

                   my $v = Data::Sah::gen_validator($sch, {return_type=>"str_errmsg"});
                   if ($random_valid_eg) {
                       push @pod, " \n";
                       push @pod, " # a sample valid data\n";
                       push @pod, " \$data = ".Data::Dmp::dmp($random_valid_eg->{value}).";\n";
                       push @pod, " my \$errmsg = \$validator->(\$data); # => ".Data::Dmp::dmp($v->($random_valid_eg->{value}))."\n";
                   }
                   if ($random_invalid_eg) {
                       push @pod, " \n";
                       push @pod, " # a sample invalid data\n";
                       push @pod, " \$data = ".Data::Dmp::dmp($random_invalid_eg->{value}).";\n";
                       push @pod, " my \$errmsg = \$validator->(\$data); # => ".Data::Dmp::dmp($v->($random_invalid_eg->{value}))."\n";
                   }

                   push @pod, <<"_";

Often a schema has coercion rule or default value rules, so after validation the validated value will be different from the original. To return the validated (set-as-default, coerced, prefiltered) value:

my \$validator = gen_validator("$sch_name", {return_type=>'str_errmsg+val'});
my \$res = \$validator->(\$data); # [\$errmsg, \$validated_val]
_

                   $v = Data::Sah::gen_validator($sch, {return_type=>"str_errmsg+val"});
                   if ($random_valid_eg) {
                       push @pod, " \n";
                       push @pod, " # a sample valid data\n";
                       push @pod, " \$data = ".Data::Dmp::dmp($random_valid_eg->{value}).";\n";
                       push @pod, " my \$res = \$validator->(\$data); # => ".Data::Dmp::dmp($v->($random_valid_eg->{value}))."\n";
                   }
                   if ($random_invalid_eg) {
                       push @pod, " \n";
                       push @pod, " # a sample invalid data\n";
                       push @pod, " \$data = ".Data::Dmp::dmp($random_invalid_eg->{value}).";\n";
                       push @pod, " my \$res = \$validator->(\$data); # => ".Data::Dmp::dmp($v->($random_invalid_eg->{value}))."\n";
                   }

                   push @pod, <<"_";

Data::Sah can also create validator that returns a hash of detailed error message. Data::Sah can even create validator that targets other language, like JavaScript, from the same schema. Other things Data::Sah can do: show source code for validator, generate a validator code with debug comments and/or log statements, generate human text from schema. See its documentation for more details.

Using with Params::Sah

To validate function parameters against this schema (requires Params::Sah):

use Params::Sah qw(gen_validator);

sub myfunc {
    my \@args = \@_;
    state \$validator = gen_validator("$sch_name*");
    \$validator->(\\\@args);
    ...
}

Using with Perinci::CmdLine::Lite

To specify schema in Rinci function metadata and use the metadata with Perinci::CmdLine (Perinci::CmdLine::Lite) to create a CLI:

# in lib/MyApp.pm
package
  MyApp;
our \%SPEC;
\$SPEC{myfunc} = {
    v => 1.1,
    summary => 'Routine to do blah ...',
    args => {
        arg1 => {
            summary => 'The blah blah argument',
            schema => ['$sch_name*'],
        },
        ...
    },
};
sub myfunc {
    my \%args = \@_;
    ...
}
1;

# in myapp.pl
package
  main;
use Perinci::CmdLine::Any;
Perinci::CmdLine::Any->new(url=>'/MyApp/myfunc')->run;

# in command-line
% ./myapp.pl --help
myapp - Routine to do blah ...
...

% ./myapp.pl --version

% ./myapp.pl --arg1 ...

Using on the CLI with validate-with-sah

To validate some data on the CLI, you can use validate-with-sah utility. Specify the schema as the first argument (encoded in Perl syntax) and the data to validate as the second argument (encoded in Perl syntax):

% validate-with-sah '"$sch_name*"' '"data..."'

validate-with-sah has several options for, e.g. validating multiple data, showing the generated validator code (Perl/JavaScript/etc), or loading schema/data from file. See its manpage for more details.

_ (my $type_name = $sch_name) =~ s/(\A\w)|(::|_)(\w)/defined($3) ? uc($3) : uc($1)/eg;

push @pod, <<"_";

Using with Type::Tiny

To create a type constraint and type library from a schema (requires Type::Tiny as well as Type::FromSah):

package My::Types {
    use Type::Library -base;
    use Type::FromSah qw( sah2type );

    __PACKAGE__->add_type(
        sah2type('$sch_name*', name=>'$type_name')
    );
}

use My::Types qw($type_name);
$type_name->assert_valid(\$data);

_ }

            $self->add_text_to_section(
                $document, join("", @pod), 'SYNOPSIS',
                {ignore => 1},
            );
        }

        # add POD section: DESCRIPTION
        {
            last unless $sch->[1]{description};
            require Markdown::To::POD;
            my @pod;
            push @pod, Markdown::To::POD::markdown_to_pod(
                $sch->[1]{description}), "\n\n";
            $self->add_text_to_section(
                $document, join("", @pod), 'DESCRIPTION',
                {ignore => 1},
            );
        }

        $self->log(["Generated POD for '%s'", $filename]);

        # add POD section: SEE ALSO
        {
            my $links = $sch->[1]{links};
            next unless $links && @$links;

            my @pod;

            require String::PodQuote;
            for my $link (@$links) {
                my $url = $link->{url}; $url =~ s/^(prog|pm)://;
                push @pod, "L<$url>", ($link->{summary} ? " - ".String::PodQuote::pod_quote($link->{summary}) : ""), "\n\n";
            }
            $self->add_text_to_section(
                $document, join('', @pod), 'SEE ALSO',
                {after_section => ['DESCRIPTION']},
            );
        }

    } # Sah::Schema::*
}
}

1; # ABSTRACT: Plugin to use when building Sah::Schemas::* distribution

__END__

NAME

Pod::Weaver::Plugin::Sah::Schemas - Plugin to use when building Sah::Schemas::* distribution

VERSION

This document describes version 0.078 of Pod::Weaver::Plugin::Sah::Schemas (from Perl distribution Pod-Weaver-Plugin-Sah-Schemas), released on 2024-01-08.

SYNOPSIS

In your weaver.ini:

[-Sah::Schemas]

DESCRIPTION

This plugin is used when building a Sah::Schemas::* distribution. It currently does the following to lib/Sah/Schemas/* .pm files:

Create "SAH SCHEMAS" POD section from list of Sah::Schema::* modules in the distribution
Mention some modules in See Also section

e.g. Sah and Data::Sah.

It does the following to "Sah/Schema/*" in lib .pm files:

Add "DESCRIPTION" POD section schema's description

CONFIGURATION

show_source

Bool. Default true. If set to true, will add a SAH SCHEMA DEFINITION section containing the source (dump) of the schema. Examples will be stripped.

include_schema_module

Filter only certain scenario modules that get processed. Can be specified multiple times. The Sah::Schema:: prefix can be omitted.

exclude_schema_module

Exclude certain scenario modules from being processed. Can be specified multiple times. The Sah::Schems:: prefix can be omitted.

include_schemas_module

Filter only certain scenario modules that get processed. Can be specified multiple times. The Sah::Schemas:: prefix can be omitted.

exclude_schemas_module

Exclude certain scenario modules from being processed. Can be specified multiple times. The Sah::Schemas:: prefix can be omitted.

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Pod-Weaver-Plugin-Sah-Schemas.

SOURCE

Source repository is at https://github.com/perlancar/perl-Pod-Weaver-Plugin-Sah-Schemas.

AUTHOR

perlancar <perlancar@cpan.org>

CONTRIBUTOR

Steven Haryanto <stevenharyanto@gmail.com>

CONTRIBUTING

To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

% prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me.

COPYRIGHT AND LICENSE

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Pod-Weaver-Plugin-Sah-Schemas

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

To install Pod::Weaver::Plugin::Sah::Schemas, copy and paste the appropriate command in to your terminal.

cpanm

cpanm Pod::Weaver::Plugin::Sah::Schemas

CPAN shell

perl -MCPAN -e shell
install Pod::Weaver::Plugin::Sah::Schemas

For more information on module installation, please visit the detailed CPAN module installation guide.

	Global
`s`	Focus search bar
`?`	Bring up this help dialog

	GitHub
`g` `p`	Go to pull requests
`g` `i`	go to github issues (only if github is preferred repository)

	POD
`g` `a`	Go to author
`g` `c`	Go to changes
`g` `i`	Go to issues
`g` `d`	Go to dist
`g` `r`	Go to repository/SCM
`g` `s`	Go to source
`g` `b`	Go to file browse

	Search terms
module: (e.g. module:Plugin)
distribution: (e.g. distribution:Dancer auth)
author: (e.g. author:SONGMU Redis)
version: (e.g. version:1.00)