NAME

       Validation::Class::Directives - Validation::Class Core Directives Registry

VERSION

       version 7.900058

DESCRIPTION

       Validation::Class::Directives provides a collection of installed Validation::Class
       directives. This class inherits from Validation::Class::Mapping. Please look at
       Validation::Class::Directive for information of developing your own directives.

RATIONALE

       The following is a list of core directives that get installed automatically with
       Validation::Class and can be used to jump-start your data validation initiative.  Please
       Note! The purpose of the core directives is merely to provide a reasonable layer of
       protection against bad/malformed data, the validators are not very sophisticated and were
       created using a minimal level of strictness (e.g. the email and hostname directives do not
       perform a hostname lookup nor does the email directive conform to the RFC specification).

       Various applications have varied levels of strictness regarding various types of input
       (e.g. a hospital API may require a more sophisticated SSN validation than that of a
       department of education API; likewise; an email service API may require a more
       sophisticated email validation than that of a file sharing API).  Validation::Class does
       not attempt to provide validators for all levels of strictness and the core directives
       exist to support typical use-cases with a minimal level of strictness.

   alias
       The alias directive is provided by Validation::Class::Directive::Alias and handles
       parameter aliases.

   between
       The between directive is provided by Validation::Class::Directive::Between and handles
       numeric range validation.

   city
       The city directive is provided by Validation::Class::Directive::City and handles city/area
       validation for cities in the USA.

   creditcard
       The creditcard directive is provided by Validation::Class::Directive::Creditcard and
       handles validation for american express, bankcard, diners card, discover card, electron,
       enroute, jcb, maestro, mastercard, solo, switch, visa and voyager credit cards.

   date
       The date directive is provided by Validation::Class::Directive::Date and handles
       validation of simple date formats.

   decimal
       The decimal directive is provided by Validation::Class::Directive::Decimal and handles
       validation of floating point integers.

   default
       The default directive is provided by Validation::Class::Directive::Default and hold the
       value which should be used if no parameter is supplied.

   depends_on
       The depends_on directive is provided by Validation::Class::Directive::DependsOn and
       validates the existence of dependent parameters.

   email
       The email directive is provided by Validation::Class::Directive::Email and checks the
       validity of email address specified by the associated parameters within reason. Please
       note, the email directive does not perform a host lookup nor does it conform to the RFC
       specification.

   error
       The error directive is provided by Validation::Class::Directive::Error and holds the error
       message that will supersede any other error messages that attempt to register errors at
       the field-level for the associated field.

   errors
       The errors directive is provided by Validation::Class::Directive::Errors and is a
       container (object) which holds error message registered at the field-level for the
       associated field.

   filtering
       The filtering directive is provided by Validation::Class::Directive::Filtering and
       specifies whether filtering and sanitation should occur as a pre-process or post-process.

   filters
       The filters directive is provided by Validation::Class::Directive::Filters and specifies
       which filter should be executed on the associated field.

   hostname
       The hostname directive is provided by Validation::Class::Directive::Hostname and handles
       validatation of server hostnames.

   label
       The label directive is provided by Validation::Class::Directive::Label and holds a user-
       friendly string (name) representing the associated field.

   length
       The length directive is provided by Validation::Class::Directive::Length and validates the
       exact length of the associated parameters.

   matches
       The matches directive is provided by Validation::Class::Directive::Matches and validates
       whether the value of the dependent parameters matches that of the associated field.

   max_alpha
       The max_alpha directive is provided by Validation::Class::Directive::MaxAlpha and
       validates the length of alphabetic characters in the associated parameters.

   max_digits
       The max_digits directive is provided by Validation::Class::Directive::MaxDigits and
       validates the length of numeric characters in the associated parameters.

   max_length
       The max_length directive is provided by Validation::Class::Directive::MaxLength and
       validates the length of all characters in the associated parameters.

   max_sum
       The max_sum directive is provided by Validation::Class::Directive::MaxSum and validates
       the numeric value of the associated parameters.

   max_symbols
       The max_symbols directive is provided by Validation::Class::Directive::MaxSymbols and
       validates the length of non-alphanumeric characters in the associated parameters.

   messages
       The messages directive is provided by Validation::Class::Directive::Messages and is a
       container (object) which holds error message which will supersede the default error
       messages of the associated directives.

   min_alpha
       The min_alpha directive is provided by Validation::Class::Directive::MinAlpha and
       validates the length of alphabetic characters in the associated parameters.

   min_digits
       The min_digits directive is provided by Validation::Class::Directive::MinDigits and
       validates the length of numeric characters in the associated parameters.

   min_length
       The min_length directive is provided by Validation::Class::Directive::MinLength and
       validates the length of all characters in the associated parameters.

   min_sum
       The min_sum directive is provided by Validation::Class::Directive::MinSum and validates
       the numeric value of the associated parameters.

   min_symbols
       The min_symbols directive is provided by Validation::Class::Directive::MinSymbols and
       validates the length of non-alphanumeric characters in the associated parameters.

   mixin
       The mixin directive is provided by Validation::Class::Directive::Mixin and determines what
       directive templates will be merged with the associated field.

   mixin_field
       The mixin_field directive is provided by Validation::Class::Directive::MixinField and
       determines what fields will be used as templates and merged with the associated field.

   multiples
       The multiples directive is provided by Validation::Class::Directive::Multiples and
       validates whether the associated parameters may contain a multi-value (an array of
       strings).

   name
       The name directive is provided by Validation::Class::Directive::Name and merely holds the
       name of the associated field. This value is populated automatically.

   options
       The options directive is provided by Validation::Class::Directive::Options and holds an
       enumerated list of values to be validated against the associated parameters.

   pattern
       The pattern directive is provided by Validation::Class::Directive::Pattern and handles
       validation of simple patterns and complex regular expressions.

   readonly
       The readonly directive is provided by Validation::Class::Directive::Readonly and
       determines whether the associated parameters should be ignored.

   required
       The required directive is provided by Validation::Class::Directive::Required and handles
       validation of supply and demand.

   ssn
       The ssn directive is provided by Validation::Class::Directive::SSN and handles validation
       of social security numbers in the USA.

   state
       The state directive is provided by Validation::Class::Directive::State and handles state
       validation for states in the USA.

   telephone
       The telephone directive is provided by Validation::Class::Directive::Telephone and handles
       telephone number validation for the USA and North America.

   time
       The time directive is provided by Validation::Class::Directive::Time and handles
       validation for standard time formats.

   toggle
       The toggle directive is provided by Validation::Class::Directive::Toggle and used
       internally to handle validation of per-validation-event requirements.

   uuid
       The uuid directive is provided by Validation::Class::Directive::UUID and handles
       validation of Globally/Universally Unique Identifiers.

   validation
       The validation directive is provided by Validation::Class::Directive::Validation and used
       to execute user-defined validation routines.

   value
       The value directive is provided by Validation::Class::Directive::value and hold the
       absolute value of the associated field.

   zipcode
       The zipcode directive is provided by Validation::Class::Directive::Zipcode and handles
       postal-code validation for areas in the USA and North America.

AUTHOR

       Al Newkirk <anewkirk@ana.io>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2011 by Al Newkirk.

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