NAME
    MooseX::Role::Validatable - Role to add validation to a class

SYNOPSIS
        package MyClass;

        use Moose;
        with 'MooseX::Role::Validatable';

        has 'attr1' => (is => 'ro', lazy_build => 1);

        sub _build_attr1 {
            my $self = shift;

            # Note initialization errors
            $self->add_errors( {
                message => 'Error: blabla',
                message_to_client => 'Something is wrong!'
            } ) if 'blabla';
        }

        sub _validate_some_other_errors { # _validate_*
            my $self = shift;

            my @errors;
            push @errors, {
                message => '...',
                message_to_client => '...',
            };

            return @errors;
        }

        ## use
        my $ex = MyClass->new();

        if (not $ex->initialized_correctly) {
            my @errors = $ex->all_init_errors();
            ...;    # We didn't even start with good data.
        }

        if (not $ex->confirm_validity) { # does not pass those _validate_*
            my @errors = $ex->all_errors();
            ...;
        }

DESCRIPTION
    MooseX::Role::Validatable is a Moo/Moose role which provides a standard
    way to add validation to a class.

METHODS
  initialized_correctly
    no error when init the object (no add_errors is called)

  add_errors
        $self->add_errors(...)

    add errors on those lazy attributes or sub BUILD

  confirm_validity
    run all those _validate_* messages and returns true if no error found.

  all_errors
    An array of the errors currently noted. combined with all_init_errors
    and all_validation_errors

    all errors including below methods are instance of error_class, default
    to MooseX::Role::Validatable::Error

  all_init_errors
    all errors on init

  all_validation_errors
    all errors on validation

  all_errors_by_severity
    order by severity

  primary_validation_error
    the first error of all_errors_by_severity

  validation_methods
    A list of all validation methods available on this object. This can be
    auto-generated from all methods which begin with "_validate_" which is
    especially helpful in devleoping new validations.

    You may wish to set this list directly on the object, if you create and
    validate a lot of static objects.

  error_class
    default to MooseX::Role::Validatable::Error, override by

        has '+error_class' => (is => 'ro', default => sub { 'My::Validatable::Error' });

        # or
        ->new(error_class => 'My::Validatable::Error');

AUTHOR
    Binary.com <fayland@binary.com>

COPYRIGHT
    Copyright 2014- Binary.com

LICENSE
    This library is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

SEE ALSO
