SYNOPSIS

In the class consuming the role:

package Foo;
use Moo;
with qw(SQL::Translator::Role::Error);
sub foo {
...
return $self->error("Something failed")
unless $some_condition;
...
}

In code using the class:

    Foo->foo or die Foo->error;
    # or
    $foo->foo or die $foo->error;

DESCRIPTION

This Moo::Role provides a method for getting and setting error on a class or object.

METHODS

$object_or_class->error([$message])

If called with an argument, sets the error message and returns undef, otherwise returns the message.

As an implementation detail, for compatibility with Class::Base, the message is stored in "$object->{_ERROR}" or $Class::ERROR, depending on whether the invocant is an object.