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Id: 71957
Status: new
Priority: 0/
Queue: MooseX-Declare

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Owner: Nobody in particular
Requestors: noelt.dolan [...] virgin.net
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Subject: Basic role implementation failing - <Role> requires the method '<method_name> to be implemented by '<class>'
Date: Wed, 26 Oct 2011 14:22:25 +0100
To: bug-MooseX-Declare [...] rt.cpan.org
From: NOEL DOLAN <noelt.dolan [...] virgin.net>
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Hi, I'm getting an error when trying to implement a role against a class (as detailed below). The error goes away if I uncomment the 'dummy' method in the CPersonMD class - however, this only works if the dummy method is declared AFTER the 'name' method, not before it. -- Environment System : FreeBSD 8.2 Perl : 5.12.4 Moose : 2.0205 MooseX::Declare : 0.35 -- -- start - role : RPersonMD.pm -- use MooseX::Declare; role RPersonMD { requires qw( name ); } -- end - -- -- start - class : CPersonMD.pm -- use MooseX::Declare; class CPersonMD with RPersonMD { method name() { print "my name is mud!\n"; } #method dummy(){} } -- end - -- -- start - script : test_md.pl -- #!/usr/bin/perl use strict; use warnings; use CPersonMD; my $person = CPersonMD->new(); $person->name(); exit(1); -- end - -- -- Start - Error Message -- 'RPersonMD' requires the method 'name' to be implemented by 'CPersonMD' at /usr/local/lib/perl5/site_perl/5.12.4/mach/Moose/Meta/Role/Application/ToClass.pm line 127 Moose::Meta::Role::Application::ToClass::check_required_methods('Moose::Meta::Role::Application::ToClass=HASH(0x29598500)', 'Moose::Meta::Role=HASH(0x2965f320)', 'Moose::Meta::Class=HASH(0x29587de8)') called at /usr/local/lib/perl5/site_perl/5.12.4/mach/Moose/Meta/Role/Application.pm line 55 Moose::Meta::Role::Application::apply('Moose::Meta::Role::Application::ToClass=HASH(0x29598500)', 'Moose::Meta::Role=HASH(0x2965f320)', 'Moose::Meta::Class=HASH(0x29587de8)') called at /usr/local/lib/perl5/site_perl/5.12.4/mach/Moose/Meta/Role/Application/ToClass.pm line 35 Moose::Meta::Role::Application::ToClass::apply('Moose::Meta::Role::Application::ToClass=HASH(0x29598500)', 'Moose::Meta::Role=HASH(0x2965f320)', 'Moose::Meta::Class=HASH(0x29587de8)', 'HASH(0x295f2848)') called at /usr/local/lib/perl5/site_perl/5.12.4/mach/Moose/Meta/Role.pm line 470 Moose::Meta::Role::apply('Moose::Meta::Role=HASH(0x2965f320)', 'Moose::Meta::Class=HASH(0x29587de8)') called at /usr/local/lib/perl5/site_perl/5.12.4/mach/Moose/Util.pm line 159 Moose::Util::_apply_all_roles('Moose::Meta::Class=HASH(0x29587de8)', undef, 'RPersonMD') called at /usr/local/lib/perl5/site_perl/5.12.4/mach/Moose/Util.pm line 98 Moose::Util::apply_all_roles('Moose::Meta::Class=HASH(0x29587de8)', 'RPersonMD') called at CPersonMD.pm line 8 require CPersonMD.pm called at ./test_md.pl line 5 main::BEGIN() called at CPersonMD.pm line 0 eval {...} called at CPersonMD.pm line 0 Compilation failed in require at ./test_md.pl line 5. BEGIN failed--compilation aborted at ./test_md.pl line 5. -- end - For comparison, the above works as expected in the following environment. -- Environment System : Ubuntu 8.04 Perl : 5.10.1 Moose : 2.0007 MooseX::Declare : 0.34 Regards, Noel


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