Re: Custom error messages and moose

[remiah]

Do you show me your error message? if I return undef to isa 'Str' attribute, I will see like this.

Attribute (ip_address) does not pass the type constraint because: Validation failed for 'Str' with value undef at reader test::ip_address (defined at 069.pl line 7) line 15
	test::ip_address('test=HASH(0x284a2320)') called at 069.pl line 35

Or, Is there some reason you can't die like this ?

sub get_ip_address {
    my $self = shift;
    my $allclasses_file = $self->allclasses_file;
    my $ip_address;

    if ( $allclasses_file =~ m/_([^_]+$)/ ) {
        $ip_address = $1;
        return  $ip_address;
    } else {
        die "not good ip\n";
    }
}

[neilwatson]

There is pretty verbose:

Use of uninitialized value $ip in gethostbyaddr at /home/neil/perl5/li
+b/perl5/Evolvethinking/Unicorn.pm line 67, <FH> line 1.
Attribute (fqhn) does not pass the type constraint because: Validation
+ failed for 'Str' with value undef at /home/neil/perl5/lib/perl5/x86_
+64-linux-thread-multi/Mouse/Util.pm line 383, <FH> line 1.
        Mouse::Util::throw_error('Mouse::Meta::Attribute=HASH(0x20342d
+0)', 'Attribute (fqhn) does not pass the type constraint because: V..
+.', 'data', undef, 'depth', -1) called at /home/neil/perl5/lib/perl5/
+Evolvethinking/Unicorn.pm line 78
        Unicorn::insert_record('Unicorn=HASH(0x20d3308)') called at /h
+ome/neil/bin/p1.pl line 30

Yes, I can put a die or warn in the sub but, I'm wondering if there is a more Moose like way.

[remiah]

If you set Environment variable MOOSE_ERROR_STYLE with

export MOOSE_ERROR_STYLE=croak

, you can cut confess style backtrace output.

There seems to be discussion for error handling of Moose. I have no further experience for this. regards.