NAME

Sah::Schema::nutrient::symbol - A known nutrient symbol, from TableData::Health::Nutrient

VERSION

This document describes version 0.002 of Sah::Schema::nutrient::symbol (from Perl distribution Sah-SchemaBundle-Nutrient), released on 2024-05-30.

SAH SCHEMA DEFINITION

[
  "str",
  {
    "in" => [
      "VA",
      "VD",
      "VE",
      "VK",
      "VB1",
      "VB2",
      "VB3",
      "VB5",
      "VB6",
      "VB9",
      "VB12",
      "VB7",
      "VB4",
      "VC",
      "Ca",
      "P",
      "Mg",
      "Fe",
      "I",
      "Zn",
      "Se",
      "Mn",
      "F",
      "Cr",
      "K",
      "Na",
      "Cl",
      "Cu",
      "Energy",
      "Protein",
      "Total_Fat",
      "Saturated_Fat",
      "Cholesterol",
      "Linoleic_Acid",
      "Alpha_Linoleic_Acid",
      "Carbohydrate",
      "Dietary_Fiber",
      "L_Carnitine",
      "Myo_Inositol",
    ],
    "x.completion" => "nutrient_symbol",
  },
]

Base type: str

Used completion: nutrient_symbol

SYNOPSIS

Sample data and validation results against this schema

""  # INVALID (Empty string)

"X"  # INVALID (Unknown nutrient)

"VD"  # valid

"energy"  # INVALID (Case matters)

Using with Data::Sah

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

use Data::Sah qw(gen_validator);
my $validator = gen_validator("nutrient::symbol*");
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("nutrient::symbol", {return_type=>'str_errmsg'});
my $errmsg = $validator->($data);

# a sample valid data
$data = "VD";
my $errmsg = $validator->($data); # => ""

# a sample invalid data
$data = "energy";
my $errmsg = $validator->($data); # => "Must be one of [\"VA\",\"VD\",\"VE\",\"VK\",\"VB1\",\"VB2\",\"VB3\",\"VB5\",\"VB6\",\"VB9\",\"VB12\",\"VB7\",\"VB4\",\"VC\",\"Ca\",\"P\",\"Mg\",\"Fe\",\"I\",\"Zn\",\"Se\",\"Mn\",\"F\",\"Cr\",\"K\",\"Na\",\"Cl\",\"Cu\",\"Energy\",\"Protein\",\"Total_Fat\",\"Saturated_Fat\",\"Cholesterol\",\"Linoleic_Acid\",\"Alpha_Linoleic_Acid\",\"Carbohydrate\",\"Dietary_Fiber\",\"L_Carnitine\",\"Myo_Inositol\"]"

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("nutrient::symbol", {return_type=>'str_errmsg+val'});
my $res = $validator->($data); # [$errmsg, $validated_val]

# a sample valid data
$data = "VD";
my $res = $validator->($data); # => ["","VD"]

# a sample invalid data
$data = "energy";
my $res = $validator->($data); # => ["Must be one of [\"VA\",\"VD\",\"VE\",\"VK\",\"VB1\",\"VB2\",\"VB3\",\"VB5\",\"VB6\",\"VB9\",\"VB12\",\"VB7\",\"VB4\",\"VC\",\"Ca\",\"P\",\"Mg\",\"Fe\",\"I\",\"Zn\",\"Se\",\"Mn\",\"F\",\"Cr\",\"K\",\"Na\",\"Cl\",\"Cu\",\"Energy\",\"Protein\",\"Total_Fat\",\"Saturated_Fat\",\"Cholesterol\",\"Linoleic_Acid\",\"Alpha_Linoleic_Acid\",\"Carbohydrate\",\"Dietary_Fiber\",\"L_Carnitine\",\"Myo_Inositol\"]","energy"]

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("nutrient::symbol*");
    $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 => ['nutrient::symbol*'],
        },
        ...
    },
};
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 '"nutrient::symbol*"' '"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.

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('nutrient::symbol*', name=>'NutrientSymbol')
    );
}

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

DESCRIPTION

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Sah-SchemaBundle-Nutrient.

SOURCE

Source repository is at https://github.com/perlancar/perl-Sah-SchemaBundle-Nutrient.

AUTHOR

perlancar <perlancar@cpan.org>

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 software is copyright (c) 2024 by perlancar <perlancar@cpan.org>.

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=Sah-SchemaBundle-Nutrient

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.

cpanm Sah::SchemaBundle::Nutrient

perl -MCPAN -e shell
install Sah::SchemaBundle::Nutrient