NAME¶

Sub::HandlesVia::Manual::WithMouse - using Sub::HandlesVia with Mouse

SYNOPSIS¶

 package Kitchen {
   use Mouse;
   use Sub::HandlesVia;
   use Types::Standard qw( ArrayRef Str );
   
   has food => (
     is          => 'ro',
     isa         => ArrayRef[Str],
     handles_via => 'Array',
     default     => sub { [] },
     handles     => {
       'add_food'    => 'push',
       'find_food'   => 'grep',
     },
   );
 }

(If you have a mouse in your kitchen, that might not be very hygienic.)

MANUAL¶

Sub::HandlesVia allows you to delegate methods from your class to the values of your objects' attributes.

Conceptually, it allows you to define "$object->push_number($n)" to be a shortcut for "$object->numbers->push($n)" except that "$object->numbers" is an arrayref, so doesn't have methods you can call on it like "push".

You should be able to use Sub::HandlesVia as a drop-in replacement for MouseX::NativeTraits, just replacing "traits => ['Array']" in an attribute definition with "handles_via => 'Array'".

 package R1 {
   use Mouse:Role;
 }
 
 package R2 {
   use Mouse:Role;
   use Sub::HandlesVia;
   
   # define some attributes with delegation
 }
 
 # This class is broken.
 package C1 {
   use Mouse;
   with 'R1', 'R2';
 }
 
 # This class should work.
 package C2 {
   use Mouse;
   with 'R1';
   with 'R2';
 }

 handles_via => [ 'Number', 'Scalar' ]

 package Kitchen {
   use Mouse;
   use Sub::HandlesVia;
   
   has food => (
     is          => 'ro',
     isa         => 'ArrayRef[Str]',
     handles_via => 'Array',
     default     => sub { [] },
     handles     => {
       'add_food'    => 'push',
       'find_food'   => 'grep',
     },
   );
 }

 package Kitchen {
   use Mouse;
   use Sub::HandlesVia;
   
   has food => (
     is          => 'ro',
     isa         => 'ArrayRef[Str]',
     traits      => ['Array'],
     default     => sub { [] },
     handles     => {
       'add_food'    => 'push',
       'find_food'   => 'grep',
     },
   );
 }

BUGS¶

Please report any bugs to <https://github.com/tobyink/p5-sub-handlesvia/issues>.

SEE ALSO¶

Misc advanced documentation: Sub::HandlesVia::Manual::Advanced.

Sub::HandlesVia.

Documentation for delegatable methods: Sub::HandlesVia::HandlerLibrary::Array, Sub::HandlesVia::HandlerLibrary::Blessed, Sub::HandlesVia::HandlerLibrary::Bool, Sub::HandlesVia::HandlerLibrary::Code, Sub::HandlesVia::HandlerLibrary::Counter, Sub::HandlesVia::HandlerLibrary::Enum, Sub::HandlesVia::HandlerLibrary::Hash, Sub::HandlesVia::HandlerLibrary::Number, Sub::HandlesVia::HandlerLibrary::Scalar, and Sub::HandlesVia::HandlerLibrary::String.

AUTHOR¶

Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE¶

This software is copyright (c) 2022 by Toby Inkster.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

DISCLAIMER OF WARRANTIES¶

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.