NAME

Class::Workflow::Transition::Validate::Simple - Easier validation code.

SYNOPSIS

package MyTransition;
use Moose;

with qw/Class::Workflow::Transition::Validate::Simple/;

# ...

$t->clear_validators;
$t->add_validators( sub { ... } );

DESCRIPTION

FIELDS

ignore_validator_rv

This is useful if your validators only throw exceptions.

Defaults to false

error_state

This contains a state that will be moved to if a validation error occurs.

In conjunction with Class::Workflow::State::AutoApply this can work like a catch block.

The instance will have the error attribute set.

no_die

If this is set, validation_error will not die even if error_state is not set.

The instance will have the error attribute set, and will be reaccepted into it's current state, with the error.

METHODS

validators

This is an optional list of sub refs which will be called to validate input before applying body.

They should raise an exception or return a false value if the input is bad.

They may put validation result information inside the Class::Workflow::Context or equivalent, if one is used.

A more comprehensive solution is to override the validate method yourself and provide rich exception objects with validation error descriptors inside them.

The validators are invoked as methods on the transition.

IF ignore_validator_rv is true then only exceptions are considered input validations.

add_validators @code_refs

clear_validators

Modify the list of validators.

ROLES

This role consumes the following roles:

• Class::Workflow::Transition::Validate