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

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 { ... } );

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 the Class::Workflow::State::AutoApply manpage 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.

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 the Class::Workflow::Context manpage 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.

This role consumes the following roles:

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