NAME

Valiant::Validator::Format - Validate a value based on a regular expression

SYNOPSIS

    package Local::Test::Format;

    use Moo;
    use Valiant::Validations;

    has phone => (is=>'ro');
    has name => (is=>'ro');
    has email => (is=>'ro');

    validates phone => (
      format => +{
        match => qr/\d\d\d-\d\d\d-\d\d\d\d/,
      },
    );

    validates name => (
      format => +{
        without => qr/\d+/,
      },
    );

    validates email =>
      format => 'email';

    my $object = Local::Test::Format->new(
      phone => '387-1212',
      name => 'jjn1056',
    );

    $object->validate;

    warn $object->errors->_dump;

    $VAR1 = {
      'phone' => [
                 'Phone does not match the required pattern'
               ],
      'name' => [
                'Name contains invalid characters'
              ],
      'email' => [
                'Email is not an email address'
              ],

    };

DESCRIPTION

Validates that the attribute value either matches a given regular expression (match) or that it fails to match an exclusion expression (without).

Values that fail the match condition (which can be a regular expression or a reference to a method that provides one) will add an error matching the tag invalid_format_match, which can be overridden as with other tags.

Values that match the without conditions (also either a regular expression or a coderef that provides one) with all an error matching the tag invalid_format_without which can also be overridden via a passed parameter.

A number of format shortcuts are built in to help you bootstrap faster. Use the text string in place of the regexp (for example:)

    validates email => (
      format => +{ 
        match => 'email',
      }
    );

You can add to the prebuilts by adding keys to the global %prebuilt_formats hash. See code for more.

email

Uses a regexp to validate that a string looks like an email. This is naive but probably acceptable for most uses. For real detailed eail checking you'll need to build something on Email::Valid. Uses translation tag not_email.

alpha

Text can only be upper or lowercase letter. Uses translation tag not_alpha.

alpha_numeric

Text can only be upper or lowercase letters, numbers or '_'. Uses translation tag not_alpha_numeric.

words

Only letters and spaces. Error message default is translation tag not_words.

word

Must contain only a single word. Adds error not_word if fails.

zip

zip5

zip9

Match US zipcodes. This is a pattern match only, we don't actually check if the zip is a true valid zipcode, just that it looks like one. zip5 matches a common 5 digit zipcode and return not_zip5 translation tag if not. zip9 looks for the 'Zip +4' extended zipcode, such as 11111-2222 (the separator can be either '-' or a space). Adds errors not_zip9 if not. Finally zip will match either zip or zip +4 and add error not_zip on failure to match.

ascii

Must contain only ASCII characters. Adds error not_ascii if fails.

SHORTCUT FORM

This validator supports the follow shortcut forms:

    validates attribute => ( format => qr/\d\d\d/, ... );

Which is the same as:

    validates attribute => (
      format => +{
        match => qr/\d\d\d/,
      },
    );

We choose to shortcut the 'match' pattern based on experiene that suggested it is more common to required a specific pattern than to have an exclusion pattern.

This also works for the coderef form.

    validates attribute => ( format => \&pattern, ... );

Which is the same as:

    validates attribute => (
      format => +{
        match => \&pattern,
      },
    );

And of course its very handy for using one of the built in pattern tags:

    validates email => (format => 'email');

Which is the same as:

    validates email => (
      format => +{ 
        match => 'email',
      }
    );

GLOBAL PARAMETERS

This validator supports all the standard shared parameters: if, unless, message, strict, allow_undef, allow_blank.

SEE ALSO

Valiant, Valiant::Validator, Valiant::Validator::Each.

AUTHOR

See Valiant

COPYRIGHT & LICENSE

See Valiant

cpanm Valiant

perl -MCPAN -e shell
install Valiant